Pneumatic

Irrigation solenoid valve are the gatekeepers to your sprinkler heads.

They are connected to the water source for your irrigation and control the flow of water to each sprinkler "zone" or section. If you have a five zone system you have five valves.

Quality solenoid valves are built to perform under adverse conditions. They lay quietly in the ground doing their job year after year, covered in dirt and water. As with any equipment that is made up of moving parts, they will eventually wear out and fail.

Sprinkler valves generally fail in one of three ways:

* They will stick open and run 24 hours a day until the water source is turned off.

*They will constantly leak a small amount of water, known as "weeping".

*Or they will not turn on at all.

The problem is that after 15-20 years of being out of site and out of mind, when they fail---how do you find them?

The best and easiest way to locate a pneumatic valve is with a specialized tool called a valve locater. However, these devices are expensive to purchase and generally not for rent. So before you go to the expense of hiring an irrigation contractor to find your malfunctioning valve, here are some places to look:

First, check near your water source. Many homes have their irrigation system connected to their house water (versus connected to a pump). Most city water systems will have an above ground back flow preventer. This is a metal device with handles on it to turn off the sprinkler water without turning off the water to the house. It should be located near where the water from your city meter goes into your house.

After finding the back flow preventer, take a 12" screwdriver and GENTLY probe a six foot area around the back flow. Take care to probe slowly as to not puncture any pipes. If you hit something solid , probe around this spot six inches in diameter. If you hit anything smaller than that, keep looking.

The next place to look is where the sprinkler timer is located. Check this area in the same way as you probed the back flow area.

Another indicator to determine the location of the valve is to turn on the defective zone and determine which sprinklers pressurize first. The first heads to pressurize are the ones closest to the valve. Obviously, this will not work with valves that will not come on.

Quite often, the valves will not all be placed in a central location. They will be scattered throughout the yard. A very common location is on the corners of the house.

Because your system was probably installed with a walk-behind-trencher, the valves will be at about two feet off of the walls.

Although buried solenoid valve can be difficult to find without a valve locator, with some patience and a little luck, they can be found.

Small pressure relief solenoid valve are electromagnetic devices that regulate the flow of a media, typically water or gas. Solenoid coils use energy to open and close the valve mechanically with the flip of a switch. Sometimes they may use metal or rubber seals and even interfaces that allow you to control them more easily.

A spring may also be used which holds the valve in an open or closed position when it is not activated. A diaphragm is used in order to keep the media from passing through the valve. The pressure is equal on both sides of the diaphragm which shuts the valve off from any flow.

As you can imagine, because small pressure relief solenoid valves have so many small working parts there is plenty of opportunity for things to go wrong. Although this is rare, it is sometimes necessary to know the basics of how to service them. If either of the holes in the diaphragm becomes clogged somehow, this can seriously impair the device from working properly. This problem can usually be fixed by simply opening up the valve and cleaning off the diaphragm and the seat it rests on. They can be opened up easily be simply unscrewing the bolts and separating the two main parts from one another.

One easy way that you can test whether or not your small pressure relief solenoid valves are working is to switch them on and off and listen for a click, which is the diaphragm raising and lowering. If you do not hear this click, then there is a good chance that it is not receiving electricity due to bad wiring or a faulty solenoid. If the solenoid is no longer working do not try and fix it; if it is damaged it probably cannot be repaired and should simply be replaced. When searching for a replacement, you may be interested in Asco solenoid valves since they are the leading company in the industry.

The same can be said of the plunger that is typically found in hydraulic solenoid valves. If it is sticking and causing the machine not to work, and cleaning it does not improve things, simply have it replaced. These plungers are sometimes kept in place with a spring, so when removing them make sure that the spring does not pop out and become lost.

If after cleaning your hydraulic pneumatic and it turns out that they work perfectly now, then something in your water supply probably clogged it. It may be in your best interest to have a filter installed upstream of the valve so that this does not become a reoccurring event. Because the cost of replacing small pressure relief solenoid valve is more expensive than the cost of one of these filters, you will come out ahead in the end.

Asco solenoid valve offer some of the most sophisticated features of all products of their kind. Of course, it stands to reason that the company responsible for developing and manufacturing the first commercially available solenoid valves, having weathered over a century in business, would have refined every element of its core product to perfection.

Still, Asco solenoid valves, just the same as all solenoid valves, are designed on the basis of very simple principles. Learning about the inner workings of a device of this nature can help you to better understand how the specs quoted by various manufacturers like Mac, Asco and Burkert actually translate in terms of the nature and quality of the performance of the device.

Were you to take an Asco solenoid valve to pieces, the most interesting-looking component would probably be the coil of engine wire, with its cylindrical slug or armature, designed to fit snugly inside of it, held either inside or just outside the coil's cavity. Solenoid armatures always have a spring attached, positioned so as to balance the force exerted on the slug by the coil, and so return the slug to its initial position after activation.

You see, that coil of motor wire, when charged with electric current, is able to produce a force which, depending on the direction of the (preferably DC) current, will either suck the armature into the coil's cavity, or push it out, expelling it from its starting point inside the coil.

This simple inline movement has been exploited in a million ways by engineers over the last century. Asco's been using them since 1910, when the first Asco solenoid valves went to market. Solenoids are also used to perform such functions as tripping switchboards when the voltage gets too high, or closing the pair of contacts that allow current to run from a car battery to the car's engine. They sometimes also serve as the basis for rotary movements, pushing platforms or nuts threaded onto large bolts so as to rotate when forced to move up or down.

In terms of industrial applications, well, Asco solenoid valves utilize solenoids to open and close themselves. Essentially, the solenoid is placed in such a position that it's the only thing keeping the pressure in the mid-chamber of the valve sufficiently high to hold closed the diaphragm sealing the valve's inlet from that mid-chamber.

When the 'pin', the inline solenoid armature, is sucked into its coil, that pressure is released, and the diaphragm rises under the pressure of incoming gases or fluids, allowing the fluid to run directly through the valve unimpeded. Thus all you need to do in order to open those floodgates is throw an electrical switch, which, of course, can also be automated with a timer or computer software that judges when fluids need to be released.

As mentioned above, truly world-beating companies producing inline DC solenoid valve include Mac, Asco, Burkert and about a half dozen other companies that have been in the game for decades. The done thing in this industry is to go with the experienced players - for as hungry as the younger companies may be, there's simply nothing to match the product streamlining that decades of manufacturing pneumatic, research and development have achieved.

Asco valves, whether designed to better channel the flow of steam, air, water or some other compressed fluid medium, are the choice amongst professional engineers for motion control tasks of just about any nature. The fact is that contromatic valves from Asco Valves range from the simplest on-off solenoid valve to complicated computer operated valve assemblies meant to serve as complete flow control solutions.

Pistons by their nature produce a simple linear motion. However, when a piston is conjoined to a crankshaft via a hinged arm, that linear motion can be mechanically transmuted into circular motion. Piston actuated valves get switched into their secondary or alternate position by the motion of a crankshaft, move fluid or gas from one space into another, a common technique used in internal combustion engines and a great many other machines - a great many of which contain piston actuated valves distributed by Asco, due to the valves' famed high quality and ability to withstand wear and tear.

The term 'contromatic valves' is one without a proper formal definition, and arose from the efforts of corporate marketers to find a neat umbrella term that could be used to describe the gamut of Asco valves, including solenoid valves and piston-actuated valves. 'Contromatic' was coined as all of these devices allow for greater measures of control, be it manually, at the hands of an operating technician at a switchboard, or in the fashion of a servo valve.

Servo valves are capable of responding to changes in the operation of the machine to which they're adjoined. This is essentially achieved by means of the principle of negative feedback, whereby the actual, present functioning or position of a device is compared to the desired or intended 'control' position.

A simple example of this is the original thermostat, known at the time of its inception as the 'furnace regulator', which was developed and patented by Albert Butz in 1885. The device was constructed in such a way that when the ambient temperature of the room fell below a given temperature, the device would close a circuit and energize a solenoid, which in turn would deploy its armature to move a motor gear, turning a crank that would allow more air into the furnace, thus increasing ambient heat up until a certain point, at which time the engine would turn another half revolution, raveling the chain back up and closing the furnace's damper flap.

The incorporation of a solenoid into the device was, at the time, a rather rare thing. Indeed, it was only in 1910 that Asco Valves incorporated solenoids into its valves, becoming the distributor of the first commercially available solenoid valves. The company's later expansion into piston actuated valves would secure its standing, at that crucial time, at the head of a relatively small field of manufacturers, a fact that's turned it into an international engineering and parts supply powerhouse.

Still, Asco Valves is not alone amongst distributors that havestood the test of time. Many of the dominant companies in the production of valves and motion-actuation systems are over half a century old. Among them is Honeywell, a corporation that, aside from solenoid valve, manufactures pneumatic and hydraulic systems, and can trace its roots back as far as 1886 (and the aforementioned Albert Butz).

The pneumatic elevator lets your home sport that futuristic look of transparent tubes transporting people in science fiction films. With this kind of equipment, you and your family can now enjoy the reality of being transported to the different floors of your residential buildings in these high-tech tubes that do not need cables, pulleys or pistons.

There would be no visible material supporting the cab of this vacuum elevator because it is actually air that is performing this function. Plastic and aluminum are used because minimizing the weight is vital in the pneumatic elevator where the difference in air pressure between the top and bottom of the cab is responsible for lifting it or bringing it down.

The Principle Behind This Elevator

The basic principle in the design of the pneumatic elevator is that a long transparent tube contains the cylindrical elevator car with a diameter that is slightly smaller than that of the bigger tube. The floor and ceiling of the elevator car are airtight and a vacuum pump is allowed to suck the air out of the top of the long tube. This will cause a vacuum to form at the top of the tube.

The air pressure underneath the floor of the car will then slowly push it up as the difference in air pressure between the top and bottom increases. To lower the car, the vacuum pump is turned off. As air returns to the vacuum space, the difference in the air pressure decreases and the elevator gradually goes down. With this system, it can be seen that there is no chance for the car to drop abruptly.

Why Should You Choose This Kind of Elevator?

Some of the benefits offered by this particular design for home elevators include solenoid valve ease of maintenance, operation and installation when compared to the usual residential elevators. There is no need to dig a pit and hoist way so that these are appropriate for homes that have already been constructed.

Another vital advantage of this personal elevator gizmag that may not be surpassed by other designs is the safety that it provides. As can be seen from the above discussion on how it works, it is impossible for the elevator car to go into free fall. In addition, if a power failure occurs, the car cannot drop suddenly but only slowly as the air gradually returns to the vacuum space.

Another essential advantage of the pneumatic elevator is, of course, its futuristic appearance. Friends will surely be amazed by its looks and this will also increase the market price of your home. This market value will be further enhanced when buyers learn about its inherent safety features.

Another essential benefit is that electric consumption is much less than for conventional elevators because it does not require electric power to bring down the elevator and it also requires less power to go up. Maintenance is also less costly because lubrication is not required and there are no complicated parts.

Gavin Cruise was born in New York, his mother encouraged him to write and read and his father was a wealthy business man in real estate. Gavin had the privilege of traveling extensively with his father learning about a wide variety of subjects. He attended Harvard where he majored in English and from the age of 26 Gavin supported himself by freelance writing through all the knowledge gained from traveling.

These are also called Single Action Cylinders. Cylinders come in a variety of types and may either be pneumatic cylinders, electro pneumatic cylinder, hydraulic cylinders or electro hydraulic cylinders. Double Acting Cylinders (DAC) employ the force of air to move in two ways, in an extend stroke and a retract stroke. Double Acting Cylinders have two ports, one for outstroke and one for in-stroke.

Pneumatic and hydraulic damping systems contain pneumatic cylinders or hydraulic cylinders which employ a steel piston, a piston rod, a cylinder barrel setup to help deliver the damping effect. As compressed air or fluid moves into a pneumatic or hydraulic cylinders, it pushes the piston up or down through the length of the cylinder. The reflex action of the piston is either activated by either the compressed air or by a spring mechanism, which brings back the spring to its original position.

In this article I want to discuss the different actuators that are used in both hydraulics and pneumatic.

Linear actuators, are most common such as hydraulic and pneumatic cylinders. The advantage of hydraulic cylinders over pneumatic cylinders is that you get so much more power due to higher pressures. While pneumatic linear actuators (cylinders) give very inexpensive and functionality in certain industrial application that do not require high forces such as the food industry, pharmaceutical industry and a lot of others. Remember Pneumatic is limited to approximately 120 psi. and this times the area equals the power.

Rotary actuators, are hydraulic and pneumatic motors, fixed rotary actuators that give a set motion of 90 deg. to 180 deg. rotation in back and forth motions. Another version of the rotary actuators is the Rack and Pinion type where there are opposing cylinders moving back and forth across a rack and pinion which in turn produces a rotating motion output at a preset rotational movement. The motors continue to turn in either a uni-directional fashion or a bi-directional fashion providing torque for rotary movement. Based on the requirement of the equipment and design this determines whether you use hydraulic or pneumatic.

The critical part of applying any actuator is understanding first what you want it to do, how much power you will need to accomplish the task and how to functionally create the circuit needed to control it. This applies whether it is hydraulic or pneumatic.

Example 1; I have a tilting arm on top of a conveyor belt that I want to raise and lower a cleaning brush during running of the conveyor to clean it. Can I do it with a linear or rotary actor? The answer is BOTH, but this depends on how much space, how far the brush has to move and it is all relative to the application. Say you need 16" of travel for the actuator to lower the brush to the belt, providing the distance will allow for clearance of a 16" stroke cylinder this would be a good application. However if the quarters are tight and there is not enough clearance then a rotary actuator may be the best application to use and apply during pivot arms for the torque.

I think you see, Fluid Power is an applied product not just something you call up and get without knowing something about. Having a better understanding of fluid power (hydraulics and pneumatics) is so important to the person marketing this type of applied product. One cannot expect to get any technical or design help from some of the large companies that only sell from a page in a book and an item number. This is most important to the end user, and should be taken into consideration when looking at fluid power components and selecting vendors. I will be discussing this in detail in future articles.

If you continue to follow my articles I will attempt to explain the solenoid valve components and details used in fluid power and will give you access to join my monthly eBooks and videos for the most inexpensive and comprehensive Fluid Power Training on the planet.

Pneumatic castors are not just limited to the cricketing world. These castors have proved vital for other outdoor environments, such as Garden Centres, Football Grounds, and Agricultural equipment and also within Marinas. Pneumatic wheels have also recently been utilised for extreme sports such as go karting, kite surfing and mountain boarding.

Similar to Cricket Clubs, these outdoor environments utilise the quieter winter months to upgrade and replace their wheels and castors, prior to the busier periods starting from Easter onwards. Garden Centres for example replace worn out wheels and replace them with pneumatic castors, wide tread sand hopper wheels or even simpler hard rubber EPR wheels. These Garden centre trolleys have a punishing summer season, and are not only expected to carry heavy plants and soils, but are also expected to be easy to move around the garden centre.

Summer seems along way away as the snow falls over the UK and the big freeze continues to chill us. However now is the time that cricket clubs are ensuring their pitches are covered and their cricket screens are suitable to be manoeuvred around the cricket field.

But how do these grounds men and women ensure these heavy covers and screens do not damage their perfectly flat cricket field? The answer is the use of pneumatic castors. These pneumatic castors have a rubber tyre, with an air filled inner tube. This means these pneumatic castors have a wide enough tread, which is cushioned, very much like a wider version of the wheels found on mountain bikes.

Not only do these pneumatic castors provide cushioning when moving covers over the cricket crease, field and boundaries, but also gives flexibility of movement and strength. Pneumatic castors can take up to 200 kilograms each, which makes them very suitable not only for cricket covers, but also for the tall and heavy cricket screens encircling the boundary.

Alternatives to the pneumatic castors are the wide tread wheels, commonly called Sand hopper wheels or GB270's. Again these wheels offer the added advantage of not denting the field, as the wide tread distributes the load of the cricket cover evenly. The only disadvantage of using these wide tread wheels, is the lack if swivel manoeuvrability. Encasing pneumatic wheels in castors therefore has the added benefit of flexibility of movement, which is proving vital during the summer months when ground covers can be moved on and off the crease at regular intervals.

Go karting has been a relatively recent and exciting environment for pneumatic wheels to operate within. Secondary schools up and down the country have a programme to encourage their students to get involved and build their own go kart. They can either purchase the kit and follow the instructions, or alternatively build one from scratch as a team! Pneumatic castors have such a diverse functionality, from sporting grounds to school grounds, they offer strength, flexibility of movement coupled with a cushioned ride, to keep our pitches perfect!

Castors have been our primary business for the last 40 years. Our Blue Elastic Rubber Castors & Wheels are utilised in a wide variety of industries, along with our Tube Fittings and Adjustable Feet. Whether you are a hospital requiring a Medical Castor such as Non Marking Rubber Castor, shop fitters wanting a Plastic Castor, food manufacturers requiring Heat Resistant Castors, a theatre requesting a Scene Shifter or a garden centre looking for Garden Equipment Castors, we can meet all your need!

Our aim is "Quality in Quantity" which means you can purchase the right castor at the best possible price and have them delivered to you in 24 hours. Our extensive stocks and low minimum order solenoid valve requirement make it even simpler for you! However if price is a factor, we can also supply cheap castors and budget castors.We sell a range of castors for different applications, including industrial and retail areas.

The 1980's brought great acceptance of Hitachi's pneumatic framing nailer and of its sliding compound miter saws which was responsible to a great degree for setting the prominence of the brand. The brand achieved acknowledgment for its offering of high quality, lasting and professional class power tools for the building industry as a whole, tradesmen, and the consumer.

Over the past several decades, Hitachi tools have earned the trust of consumers because of dependability, effectiveness, and low cost. The persistent development of technology and engineering of Hitachi power tools makes the brand a serious contender in the markets of consumer home improvement and commercial construction.

The Hitachi company began in 1910 as a simple Japanese business specializing in the correction of electrical problems. Within a few years, the small repair shop had expanded into three factories producing electrical implements and tools for industry. It grew into a global corporation concentrating in high technology power tools and various other consumer electrical devices.

Hence, Hitachi has developed a reputation for its visionary attitude toward electrical equipment. Each Hitachi power tool has the advantage of the most recent proprietary and patented technology. Therefore, one is not surprised that there are characteristics and elements of Hitachi tools which are not incorporated into the power tools of competitors.

A Brief Look at Hitachi Tools

There are in excess of 1,000 models of consumer power tools in the Hitachi family. Every one concentrates on offering the consumer compact tools with top end motor performance.

Nonetheless, Hitachi tools unceasingly continued its innovation by expending billions of dollars in product development, engineering and technological research. The culmination of such research and development was that several Hitachi tools pioneered advancement in the power tools market.

Hitachi is responsible for the first offerings of the Cordless Impact Driver, Cordless Screw Driver, Metal Stud Cutter, and Portable Rebar Bender, just to name a few. In addition, the company is an innovator in the development of exceptional tool batteries such as the 2.0 to 2.4 Ah Ni-cad batteries, rapid chargers, and the Ni-MH batteries.

Hitachi Advancement in Technology

Through its on-going commitment to the continued innovation of its power tools line, Hitachi is rolling out several unparalleled and valuable technologies.

In particular, its internal double insulation technology will be included in all power tools produced. This technology greatly increases the lifespan of Hitachi power tools due to a considerable reduction in vibration.

The advent of the new HXP Li-lon battery technology remakes the basic theory of cordless power tools. This Hitachi battery enhances the efficacy of the power tools by 300 percent because of an increased run time. Weighing in at one-half the weight of a traditional power tools battery, the Li-lon battery powered Hitachi tools are now both lighter and more compact than ever before.

The Hitachi brand signifies superior technology and performance accompanied by an inexpensive price tag. The company is furthering its development of more powerful technologies to elevate Hitachi tools to the best performing of the industry's power tools.

The Hitachi brand includes power tools for just about every job: drills, saws, pneumatic, woodworking, metal working, and masonry. The advantage that Hitachi power tools have is an astonishingly low price point versus the other top of the line brands in the market. This means that you can get excellent performance in your tools without sacrificing your budget.

What is Pneumatic Silicosis0

Silica is a compound formed from silicon and oxygen, often found in quartz, flint, agate, beach sand, sandstone and glass. When Silica particles are inhaled, it results in the formation of scar tissue in the lungs preventing oxygen from getting in the blood. This condition eventually results in a disease called Silicosis, an incurable and progressive lung disease. Approximately 300 people die from the disease every year in the United States.

More than one million workers are occupationally exposed to crystalline silica dusts in the United States. According to the World Health Organization, more than 100,000 of these workers are sandblasters. What is alarming is that 59,000 of them will eventually develop silicosis.

Sandblasting and Silicosis:

In Sandblasting, compressed air or steam is used to project a stream of abrasive particles onto a surface, which commonly includes materials like silica sand. Sandblasters or workers who operate this process are continually exposed to the harmful substance while cleaning sand and irregularities from foundry castings, removing paint etc because the silica sand used in abrasive blasting normally breaks up into fine particles and becomes airborne. Since these silica particles are invisible to the naked eye, workers may not be aware of the risks they are involved in, while performing their daily tasks.

In a research conducted by the National Institute for Occupational Safety and Health during the late 1990s, 99 sandblasters with cases of Silicosis were studied. Fourteen of them died from the disease. The remaining 85 developed complications related to Silicosis and were at risk of death. However, the relation between Silicosis and Sandblasting is not recent. As far back as in 1936, a study in Great Britain reported that 5.4% of a population of sandblasters died from silicosis or silicosis with tuberculosis during a 3 and a half year period.

Prevention of Silicosis for Sandblasters:

Avoiding inhalation of dust containing free crystalline silica is the first basic step to prevent development of Silicosis by people in the Sandblasting occupation. The use of crystalline silica for blast cleaning operations was already prohibited in Great Britain in 1950 followed by other European countries in 1966.

Adequate respiratory protection such as a type CE Abrasive Blasting Respirator should be used by everyone engaged in the sandblasting occupation, especially for workers adjacent to blasting operation machines.

Using safer materials such as Specular Hematite, Blasting Cullet, slag, or steel grit and shot as abrasive for sandblasting, instead of sand greatly decreases the chances of inhaling crystalline Silica particles.

Wetting down dry materials and surfaces before working on them also reduces the chances of crystalline Silica containing dusts becoming airborne. Eating, drinking, or smoking near sandblasting operations greatly increases the chances of crystalline Silica inhalation. Do wash your hands before. Do not take work clothes back home, which unnecessarily increases risks of exposure to your family and yourself.

Pneumatic (relating to air or other gases) tools used in industries like granite cutting tends to release larger quantities of free crystalline silica-containing dust. The use of these tools must be accompanied by an efficient dust control system.

Hot tubs and home spas have exploded in popularity over the past decade, because they are more affordable and more reliable than ever before. Of course, not all home spas are built the same, so it is important to learn all you can about what constitutes a quality Pneumatic tub and how to select the features and amenities that are right for you.

The Shell

The spa shell is significant because it is a very visible part of the spa and you want it to stay looking nice. More importantly, though, you want it to remain intact and leak-free because unlike other mechanical components, the shell cannot easily be replaced or repaired if problems develop.

The shell is composed of a surface and an understructure that are bonded together during the manufacturing process. The surface is the source of the color, look and feel of your spa, so it should resist deterioration due to the sun, spa chemicals, or normal wear and tear. Some high-end shells have special coatings to make them more stain resistant and even anti-bacterial ingredients molded right into the shell material.

The understructure of the shell is the source of its strength. It is the main reinforcement for the shell, and if it is of poor quality the shell will tend to bubble, crack or even delaminate and come apart. If the understructure is not built with sufficient strength and durability, the shell will be unable to withstand prolonged pressure from the heavy weight of water in the spa.

The Cabinet

The spa cabinet is significant because it is the other very visible part of your spa. If the cabinet deteriorates or otherwise decays in some manner, your hot tub will become an eyesore and may even fail structurally.

For many years, spa cabinetry was made of wood, most commonly redwood or cedar, and this is still a popular choice today. The quality of wood has a direct effect on the color and overall look of the cabinet, and on its longevity. Wood cabinets require regular maintenance, though, especially in climates where they are exposed to wind, rain, snow, or the drying effects of hot sunlight. Typical maintenance includes staining the wood annually, plus taking precautions to keep water from pooling and standing in contact with the wood, which can cause it to rot.

Synthetic materials are becoming very popular because they require little or no maintenance to keep their handsome looks. Early versions of synthetics looked very “plastic” and cheap, but modern synthetics have a rich, elegant look that spa owners really like. Coupled with their easy care and long life, synthetics are thought by many to be the wave of the future in spa cabinetry.

Whatever material you choose for your spa cabinet, it is important to select a cabinet style that allows easy access to internal components such as pumps and heaters. A fully removable panel is best, but a standard access door is acceptable in most cases. The easier it is to access internal parts, the less you will pay in labor charges for any repairs that may come along.

Seating And Jets

The style of seating you choose is a very personal decision. Some people like to have a relaxing lounge seat and dedicated therapy seats, while others prefer a combination of bench seating and therapy seats. For most spa buyers the choice is driven by their intended uses for a spa.

For instance, if hydrotherapy will be the primary use then it is important to buy a hot tub with therapy seats in the appropriate shape and jet configuration for the body area that will be the focus of therapy. If socializing and entertaining are at the top of the priority list, though, then it is important to buy a spa with seating that makes it easy to accommodate groups of people and facilitate conversation. Bench seating is usually a good choice for buyers with this use in mind.

Spa jets, both their position and their function, are another important choice that is personal in nature. Buyers primarily seeking hydrotherapy benefits from a hot tub usually favor multi-functional jets that provide varying massage movement and intensity. However, buyers who are more interested in using their home spa for entertaining or other social purposes often prefer standard jets, in varying quantities and positions.

Pumps, Heaters and Controls

Though not as flashy and visible as the shell, cabinetry, seating and jets, the pumps, heaters and controls are vital components of your home spa. Choose a pump, or combination of pumps, that has the power and water-moving capacity to suit the size of your spa as well as the type of jets. High action jets typically require a more robust pump, while standard jets can usually get by with a smaller pump. In most cases, though, a multi-pump system is preferable to a single pump system for the most efficient and effective water movement.

The heater is an essential component that must be sized correctly for the water capacity of your spa. If your heater is too small or underpowered, you will have constant struggles heating your spa water and the heater will be forced to work extra hard. A high quality heater, coupled with good insulation, will go a long way toward efficiently heating the water in your spa and keeping the temperature up where you want it.

Filtration and Water Purification

The filtration and water purification systems in your hot tub will have a direct bearing on the time and effort you will spend balancing and maintaining the spa water. Small capacity filtration systems and bare-bones purification systems may cost less up front when you buy a hot tub, but they will usually end up costing you more in chemicals, filter replacement, and time. It is far better to invest in systems that are more robust and save yourself the extra money and time over the long term.

Hot Tub Amenities

There is a nearly endless array of hot tub features and amenities from which to choose. Some of the most common include:

• Fountains and jets
• CD/stereos
• Multi-colored and multi-functional lighting
• Aromatherapy
• Dual controls
• Padded headrests and armrests
• Drink and cup holders
• Remote control and remote checking of temperature, water condition and pump status
• Shell colors and/or textures
• Power-assisted cover lifters

In addition to these extra amenities, spa dealers also promote and sell various decorative elements like matching steps, planters, bars and stools, gazebos, tables and chairs, etc. The choice of whether or not to invest in these extras is based solely on your personal preferences as well as your budget.

Traditionally, hot tubs and home spas used pneumatic controls to run pumps, heaters and the like. Electronic controls have gained some in popularity, but they have a spotty record of reliability and until the last few years have not been a popular choice. Technology improvements have made them much better, though, so don’t automatically dismiss electronic controls when shopping for your home spa.

In applications where pneumatic are required to operate at the slow end of their normal speed range — say, around 0.5 in./sec on average — friction poses the biggest problem. That's because the relative magnitude of stick-slip friction becomes more pronounced at lower speed, degrading more acutely the smooth motion of pneumatic cylinders.

One very sophisticated solution is glass-lined cylinder walls. These are used in highly specialized applications. More common, however, is the use of special lubricants that actually introduce a slight increase in friction at lower speeds. These minimize any jerkiness from stick-slip friction under slow motion, effectively acting to damp it out of the system. In fact, this solution, originally introduced by manufacturers specifically for use in slower applications, is now common on standard cylinders as well.

Another approach to getting more controllable motion profiles at low speeds is to reduce line pressure into cylinders. (This also serves to minimize stick-slip friction, and reduce costly exhaustion of air.) However, as with other cylinder design details, this approach requires design iteration and tweaking for full optimization.

Pneumatics in higher-speed applications can be subject to shock, overshooting, and other instabilities, and so require more clever design adaptations. But as in very slow applications, sometimes turning down the line pressure into a cylinder can improve performance. How?

Say a design has 90 psi on its rod side, and then air pressure is introduced to the piston side. Suddenly, there is a pressure drop on the former — introducing inconsistent and unpredictable motion. But designing a system to have lower pressure on its homing inactive side still allows the cylinder to return pistons to their start position — with fewer motion and energy issues. In short, this is because there is less air to vent.

In fact, controlling the release of energy is how another subsystem further extends cylinder speed limits. At end of stroke, much kinetic energy is released from a cylinder. It is common for systems to use cushioning rings or rubber bumpers to absorb this energy. But air cushions — especially combined with a secondary rubber ring — are particularly effective at controlling stops.

How does it work? A component on the piston assembly traps a bubble of air that increases in pressure, which is then bled out slowly to make for a controlled stop. Some are even designed with a sweet spot for ideal cushioning: Metal-to-metal contact is make at end of stroke, but with negligible impact and no transmitted impulse. Stainless steel cylinders in heavy applications derive the most benefit from this subsystem.

The best pneumatic cylinder for a design is that which most closely meets motion requirements. Magnetic sensors used during their design can help here. These sensors track magnets on a piston for direct measurement of kinetic energy, so that the safest speed for a given load can be calculated for individual units.

Sensors can also be used for continuous condition monitoring, tracking the entire stroke using an analog output signal — to make position inquiries with digital switching points, or (moving from pure accessory to integral pneumatic-actuator component) through analog methods along the entire stroke.

The sound, accompanied by a high-pitched shriek as cables move rapidly upon a cable loop system, is somewhat reminiscent of that made by a windmill's blades as they slice through the air. No power is generated, however — this sound is the definition of power consumption, as two giant arms swing thrill-seekers high into the air through the use of huge pneumatic cylinders.

Cedar Fair LLP, Sandusky, Ohio, introduces a new ride each year at its Cedar Point amusement park. The Skyhawk, 2006's edition, is a massive swing, designed by S&S Power Inc., Logan, Utah, which specializes in pneumatically (and sometimes hydraulically) driven rides. Its other Cedar Point contributions include the pneumatic Power Tower and the free-falling hydraulic Frog Hopper, a children's ride. More than 100 of its rides entertain riders worldwide.

Seating 40 people — 10 on each side of two large arms — the Skyhawk swings riders up to 125 ft into the air at speeds of 60 mph or more. The one-minute ride peaks at seven swings, giving riders a chance to look straight up into the sky, out over Lake Erie, or straight down to the concrete below.

This is accomplished, says Cedar Point's Vice-President of Maintenance/New Construction and Assistant General Manager Monty Jasper, with the use of a “ready power plant.” Air.

The ride is run by four 300-hp compressors from Ingersoll Rand, which pump 1275 cfm of air at 120 psi to two double-acting air cylinders that are truly massive — each has a 28-in. bore and 21-ft stroke. The two cylinders, situated on either side of the ride's legs, each contain a 300-lb piston, which generates approximately 73,000 lb. of thrust, said S&S founder Stan Checkitts. The cylinder stroke about 22 ft in normal operation within the 31-ft long cylinder.

Quick-acting, 4-in. valves, operated by 3/8-in. pilot valves, shoot the compressed air into the cylinder. S&S' Tim Jacobi, project engineer for the Skyhawk, adds, “To swing the arm one way, we open the two-position push valve on one side of the cylinder and the exhaust valve on the opposite side. Then we do the opposite to swing the arm in the other direction.” The valves shift from fully closed to fully open in about 1 sec. A computer system monitors the ride and its velocity and commands the valves to open or close.

A single loop of high-strength steel cable transmits force from the cylinder to a sheave that applies torque to drive the swing arm. Essentially, then, the assembly acts as a giant rotary actuator. A sheave at the bottom of the tower acts as an idler, and additional sheaves help keep the cable stable. Jacobi says the cable cannot become slack, which is achieved by pre-tensioning the wire rope. Because it's a loop, the tensions oppose each other. Air flowing into one end of the cylinder increases cable tension at that end but decreases tension at the other end, and the pre-tensioning prevents any part of the loop from going slack.

Compact electronic pressure regulator Type 550X miniature electropneumatic I/P, E/P transducer is ATEX compliant and converts a variable signal (current or voltage) to a proportional pneumatic output. FEATURES & BENEFITS NEMA-4X housing standard for safety Input and output ports on front and back for versatile plumbing Up to 20 scfm air flow, input signal of 4-20 mA Output pressure ranges from 3-15.

Pneumatic cylinders perform an array of functions in electronics, automotive, and packaging industries. Their basic function is always the same — linear advancement of loads by attachment to a metal piston, pushed to and fro by columns of air. At some point in every application, however, a cylinder must slow down, stop, and change direction. Exactly how that happens determines how well the cylinder will perform in cycling applications.

Air throttle
When an uncushioned piston reaches one end of its stroke, it slams into the end cap, creating a hard metal-to-metal impact. The impact is often so loud that its exceeds OSHA standards for workplace noise. After the impact, the piston may bounce, during which time, the cylinder's motion is technically uncontrolled. The high amplitude, high-frequency impact can also damage the cylinder, as well as surrounding equipment.

Avoiding such problems and decelerating piston rods in a controlled manner requires external or internal cushioning. External cushioning employs a shock-absorbing mechanism outside the cylinder's body to absorb piston impact. The drawback is that it increases the footprint of the cylinder and adds weight and moving parts. Internal cushioning, on the other hand, operates within the cylinder footprint and tends to be simpler in function.

Here's how internal cushioning works: At end-of-stroke, a piston rod approaches the cylinder end and squeezes air out; a flow vent meters air for controlled velocity. Just before impact, a cushion spear or sleeve jumps into action, blocking the cushion seal and eliminating the exhaust path. The controlled volume quickly decreases, compressing the gas. Exhaust is then metered out even more slowly, through a cushion needle, completely decelerating the piston before it contacts the cylinder end.

The air cushion itself is adjustable, so the volume of air released can be metered during compression. A threaded needle screw piercing an orifice on the end cap provides the adjustment. Turning the screw further into the orifice decreases the amount of air that can escape in a given time. This diminished exhaust creates backpressure for an even more dramatically decelerated piston.

Physics makes it possible
The physics involved in a cushioned air cylinder is relatively straightforward. The laws of physics require that a negative force act on a piston to decelerate it. This occurs when air is squeezed or compressed in the end cap, and can be mathematically understood.

Two things actually prevent pistons from colliding with end caps. One is the deceleration of the piston with an auxiliary (cushion) system. The other is drag. Pistons (and loads attached to them) slow down quickly when — prior to hitting any air cushion — the actuator reaches equilibrium between the net driving and frictional force:

Once the piston reaches the air-cushioned zone, it compresses the controlled volume of air, producing an elevated backpressure. In turn, this provides a negative force component to decelerate the load:

Some assistance

A cylinder that includes an energy-absorbing seal allows for a larger cushion orifice. With this, a piston can travel through the air cushion in one-fourth the time of a conventionally cushioned cylinder. Plus, extended piston seals can accelerate out of air cushions faster. One reason is that the larger cushion orifice doubles as a larger bleed orifice in the reverse stroke, letting air into the cylinder at a faster rate while exiting the air cushion at the other end. Another reason is the seal acts as a compressed spring, providing an initial force of 80 psi to push or accelerate the cylinder.

So, how do we avoid piston and end cap contact, bouncing, and noise, while also maintaining reasonable cycle times? By extending the cushion seal and changing its attachment to the piston. Rubber seals that extend beyond the face of the piston assist in cylinder deceleration. These extended seals are usually made of nitrile-based rubber, press-fit into a machined groove on the piston. As a cylinder completes its stroke, the seal absorbs 80% of the energy, reducing pneumatic bounce, and effectively, noise. In this way, all the cushioning isn't done by the air cushion. Less time is spent draining air, so cycle times are maximized.

A tail lift is permanently fitted to the back of a van or lorry that is used to facilitate the materials handling of goods from ground level or a loading dock to the level of the load bed of the vehicle. There are two types of tail lift vehicles - hydraulic or pneumatic. These vehicles are controlled by an operator using an electric relay switch.

Tail lift vehicles are used in machinery such as a forklift truck in order to load heavy items on to a vehicle. They are also used to bridge the difference in height between a loading dock and the vehicle load bed.

Tail lifts are available for many sizes of vehicle, from standard vans to articulated Lorries, and standard models can lift heavy loads. There are two key types of tail lift available to operators - Column lifts and Cantilever lifts.

Column lifts are mechanical and they can be hydraulic or pneumatic. They run on tracks that are fitted to the rear of the vehicle. From the tracks, a folding platform extends, which can be taken up and down. They have an advantage of being able to lift to a higher level than the load bed. They are considered suitable for loads over more than one level in the truck. They are usually the easiest of the lift types to fit, as they require little structural work.

The disadvantages of column lifts include that the platform is only usually able to operate at a 90° angle from the track, meaning that on uneven surfaces, the lift will not meet the ground properly.

The other type of lift - cantilever lift - operates only on a hydraulic or pneumatic system. The system works by a set of rams attached to the chassis of the vehicle. These rams are on hinges, allowing them to move angle as they expand or contract. By using the rams in sequence, the working platform can either be tilted, or raised and lowered. They have the advantage of being able to tilt, which means they can often form a ramp arrangement, which may be more appropriate for some applications. It also means that it can be easier to load or unload on uneven ground.

A.M.Bracewell Transport is a leading Road Transport and Haulage Company in the UK providing reliable, efficient and affordable road transport and tail lift vehicles services throughout the UK.

Compresses are used for a variety of purposes from powering pneumatic or power tools (like nailers, and staplers) blowing dust and debris off/out of those power tools, or as an inflation device for tires, flotation devices, and etc. Available in a variety of sizes and capacities, air compressors are versatile and surprisingly long-lasting; a good model could certainly last a lifetime if properly cared for. Using compressor powered pneumatic tools offers a number of benefits; pneumatically powered tools tend to be more brawny than those powered with strictly electricity, they offer greater torque and higher RPM for quick work and rapid firing. Pneumatic tools also offer an environmentally friendly alternative to toxic battery waste.

There are two types of air compressor, gas or electric, but each of these types is available with a few variations. Some compressors are small and portable, others are very large and stationary - the amount of power your compressor has generally coincides with its size. These large, stationary compressors are best suited for industrial applications and can be used by more that one person simultaneously. Compressors also vary from single stage to two stages; a two stage motor has the ability to change speeds during more constant and rigorous actions - essentially a two stage motor works harder when you need it to. Lastly, some compressors require oil lubrication while others run entirely without oil. Oil lubricated compressors tend to run more quietly; they do, however, require oil changes, operation on a flat, level surface, and may release an oil mist into the air which is highly ill-suited for applications like painting. Although many craftsmen prefer to use oil-lubed compressors because they tend to last longer and run quieter (as with any other type) they may not be practical for some applications.

Gas powered compressors are optimal on jobsites or construction zones that have not yet been outfitted with electrical power. These compressors provide the power and speed of pneumatic tools without the need for power cords or electricity. Gas compressors must, however, be used in open and well ventilated areas. Electric compressors are generally the best choice for home and shop use. They tend to run more quietly and don't stink up the joint, if you will, with a gas motor.

Keeping your air compressor well maintained will truly determine how long your compressor will keep on kicking. There are a few simple steps to ensuring your compressor remains in optimal condition, and you certainly won't regret the time you spend caring for your tool. The compression that occurs in the air tanks of your compressor causes moisture to accumulate inside those tanks. That moisture, in turn, runs the risk of rusting out the tanks, and potentially destroying a paint mixture (if used with a paint sprayer). On the bottom of the compressor there is a moisture release valve; it is crucial to release this valve with every use, this should prevent rust or other water damage. An in-line filter can also be be purchased for any compressor to eliminate water mist in your air lines.

Its important to inspect your compressors; periodically check and tighten any fasteners, make sure your air filters are running clean and replace them when necessary, check your hoses often for breaks, cracks, or leaks and be prepared to replace them when needed as well. Its also important to be certain that the compressors safety valve is functional. The safety valve (either automatically or manually) releases air should the compressor become over-pressurized; a vital feature, so be sure its operational or have it repaired. If you have an oil-lubed compressor, check the oil levels before each use to make sure the tool is properly lubricated. Change the oil as the manufacturer recommends. As far as cleanliness is concerned, its always beneficial to keep all your tools clean as a whistle and especially important to keep the compressor's intake vents clean and clear. If you have a gas compressor you may also consider periodically cleaning the fuel tank for good measure.

A good compressor is a superior tool, and can truly take the edge off a jobsite or home-repair project. With unmatched speed and power a compressor and their partnering pneumatic tools will change the way you build. Love your compressor, purchase the model that best suits you, keep it well-maintained, and your compressor will work as hard as you do.

Air tools are great work savers. However, for years most people thought you had to be either rich or a large full time auto repair shop to have an Pneumatic air system.

Fortunately for today's consumer, setting up an air system is fairly inexpensive and quick.

You can get started with just the basics and gradually add tools as you need them.

What You Need: The Basics

An air compressor
Hose
Regultor & Guages
Air Tools

Next Step: Choosing The Right Compressor

When choosing the compressor, you should have in mind the type of tools you'll be using. There should be a tag on the compressor that rates the "Air Delivery". It may say something like "5.9 AVG. SCFM @ 90 psi."

Now, on your air tool there is another number, this number is called the "Air Requirement" number. This number will look like "5.5 AVG. SCFM @ 90 psi."

All you have to do is make sure the "Air Delivery" number on the compressor is larger than the "Air Requirement" number on the tool or tools that you'll be using.

Next Step: Choosing the Right Fittings

There are two types of fitting for air tools. Industrial and Automotive. These two types of fittings CAN NOT be interchanged. You'll have to decide before buying components which style you want.

You'll also have to determine which size of fitting you want. Fittings are measured by the inside diameter (commonly called the ID). I personally prefer the 3/8ths over the 1/4 inch, but either will work well for the occasional user.

Be sure to choose the same NPT number on the air inlet of your tool as the fitting NPT number.

Next Step: Choosing the Hose System

You could just get by with air hoses laying all over the place, but that is dangerous and it makes your Garage or Shop look cluttered.

You should invest in either a reel storage system or coil hose if you you won't be far from the compressor.

Next Step: The Tools

As stated above. Decide early on which tools you'll be using and make sure your compressors "Air Delivery" rating is higher than the Pneumatic tools "Air Requirement" rating. One of the best practices to use it to determine what the largest tool that you will ever use is. For most of us that may be a Air Impact Wrench.

To understand the differences between hand tools, hydraulic and pneumatic seals, one must understand exactly what these tools. The definition is simply a tool used in the zone to be held in bundles of boxes or other packages. They are usually like this, because the data must be transported attached to a different location.

The straps prevent rotation and damage to property or damage to reputation, everyone in the heap.
Here the choice between a hand tool, hydraulic or pneumatic sealing the game to know the difference between the three can help an individual to decide what is best for their particular needs.

A manual crimp tool can be used both in society and family. Guide that is exactly how it sounds.

The individual determines the length of the ribbon and cut his hand. Although some machines to cut a predetermined length and move yourself, the manual crimping tool may be something to the operator. This means that the trend towards the user. However, it is very light and can use the data horizontally and vertically. However, hand tools for good jobs in small quantities. It can be quite tedious.

Regarding the banding, there are various sizes, which means that there are different size machines. What do you intend to take with the type of group should be established. When you run a great band surgery, you may want something that is more on the side of the car to invest.

Tools Hydraulic seals are those intended for larger jobs. They contain air pumps that enable them to operate. Some manual work, may require the operator or can be fully automated. These are large machines that can operate continuously required band. Every time a company has large contracts that may not be able to hand bend zone, the hydraulic seal tool can help us take a case.

These machines usually accept different kinds of films. All you need is that the size and weight of the item that is committed to change. This is a very strong grip, so it was outside elements.

Air seals are not commonly used tools in the domestic environment. It is mainly used in an environment. These are the films of packages that are perfect dish. It weighs a lot and is a compressed air engine, which many times when these packages can be stored unite. You can even adjust the margins and the band are good things, such as wooden slats. It can be horizontal or vertical band and can literally be in any environment, the property will require a lot of money.

Then of course there is the fact that there are different types of seals pneumatic tools. Some area of steel to be used with different widths and thicknesses. What is the size you need pneumatic seals movies committed to buy. However, what is your movie, this kind of group should be established.

The differences between different types of seals and tools are obvious, and the types of products to be shipped small to determine the type of joints is a necessary tool. The size and weight of the article will also determine the type of film is necessary. This applies to product safety and people who need work around them.

Pneumatic tool use is quickly becoming the most affordable and efficient way to work on projects around the home and in the shop. When it is time to work on your home improvement projects there are many reasons to choose hand held pneumatic tools. UK suppliers are available to provide you with all the necessary products and accessories to make your home projects go as smoothly as possible.

Pneumatic means "contains air" and that is exactly what is powering your equipment. These are designed to make your work easier and eliminate the hard work that is required to drive nails, turn screws and a variety of other tasks. They are affordable and provide the user with professional results in all of their projects.

The air compressor you will use is the source of power for your pneumatic tools. It is also the biggest investment that you will make in your equipment box. There is a wide variety of air compressors available to power your hand held pneumatic products. UK suppliers of these compressors will give you a choice of size, air pressure and air flow capacities on their selection of compressors. It is important that you choose the right one to accommodate your pneumatic equipment.

There are a number of attachments you can include with your collection of pneumatic tools. These types will run much cooler than their electrical counterparts because it is air that is the source of energy. Some attachments to consider include the blow gun for such jobs as blowing away dust and dirt, a nail gun for ease in driving nails, a spray paint gun, air stapler, air sander, and caulking gun. All of these can be powered with the use of air and an air compressor.

Pneumatic tools will last for many years if they are properly maintained as there are few moving parts. UK suppliers will tell you that this is the reason why they are almost indestructible. Keep them well lubricated and properly cleaned and you will have and enjoy them for many years.

It is also important to note that you must use safety precautions when using your pneumatic product. Wear the proper safety equipment to keep you safe during operation. Read the instructions that come with them carefully to ensure that you are taking the proper safety precautions. For some of these, there is a great deal of air pressure and a serious injury could occur if you are not following proper safety guidelines.

When choosing the pneumatic tools you require, make sure that you are considering your needs for the project as well as the running time for the compressor. There are experts available that will be able to help you determine what your needs are and which will fit your requirements best.

Now that you have decided to make the new shed in the backyard your workshop shed it is time to think about those new tools. You have studied both the battery powered tools and electric corded tools and now it is time to have a look at pneumatic tools as well. Let's take a closer look at the pneumatic air powered tool option in your shed planning.

Being air powered tools we know from the beginning that a generating source to compress air will be needed. Air tools tend to be light weight and have a housing constructed of aluminum and steel. They have fewer moving parts which constitutes less parts wear and breakage and results in fewer repair costs.

Another reason for the light weight of these types of tools is the lack of any electric components and because of this lack of electric components they also cost less. Being air driven pneumatic tools have more power and are safer to use than their electric counterparts. The overall life expectancy is greater than both the battery powered tools or the electric corded tools and so the result is lower replacement costs.

As stated above a source of compressed air to run the tools with is needed in the form of an air compressor. This will have to be an electric powered generator as battery or pneumatic is not really feasible. To work for extended periods the air compressor should have a storage tank that will have a capacity of 4 to 5 gallons. A smaller tank than 4 to 5 gallons will quickly expend the quantity of air it contains and you will find yourself waiting for it to cycle.

Cycling simply means the machine has to build up enough air to run the tool. It is recommended that the compressor be able to produce at least 135 psi of pressure and have a pressure gauge that will measure up to at least 135 psi (pound per square inch). There will be times when more than one tool may be needed at the same time so it is very beneficial to have multiples outlets on the machine.

The first pneumatic tool you will probably want to buy will be an air nail gun. When a project requires lots of nails an air nailer will make short work of the task. There are many types of air tools that can be purchased some of those are an impact wrench, air ratchet, pneumatic grinder, sanders, spray guns and screw drivers to name a few.

So now the choice has to be made. There are three types of like tools, powered three different ways. I guess the only thing to do is weigh the pros and cons and use your own best judgment on what works best for you. Good Luck!

Elevators for homes and small commercial buildings come in four different types: hydraulic, winding drum, machine traction drive, and pneumatic lift. The latter of these four is known for giving a panoramic view when installed and require less installation time and costs than other types.

If you're considering adding a residential elevator to your home, pneumatic lifts are one of the more economical options, especially as no machine room, pit, or hoist way has to be carved out of your home. Using a clear tube with a car inside, the system for a pneumatic elevator can be placed anywhere, as long as the ground is level.

The compact nature of pneumatic residential elevators makes them popular for those looking for a convenient way to get from floor to floor in their home or small commercial building. The cab inside a pneumatic lift can move up to 30 feet per minute and up to 35 feet at a time. Additionally, no lubrication is needed to move the cab.

Instead, air pressure regulated by a valve moves the elevator between floors. If you're looking for more ways to go green and reduce your carbon footprint, these residential elevators involve minimal energy consumption, with only a slight amount used to move the cab up via turbines.

How does one of these residential elevators work? To lift the cab inside, a piston depressurizes the area inside the tube and the lowered air pressure above and increased atmospheric pressure below the cab causes it to lift. When the valve above controls the pneumatic pressure, the cab descends.

As far as stopping on each floor, the tube has locking devices on the interior to stop the cab at upper and lower limits. Residential elevators need emergency features, and pneumatic lifts are all equipped with a braking system in case the atmospheric pressure inside the tube returns to normal.

If you're considering a pneumatic design for your home, such residential elevators are capable of lifting 450 pounds. While the cabs for most aren't wide enough for handicapped access, they're sufficient enough to move one to two people standing between floors of a home or small commercial building no more than three stories tall.