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Components of pneumatic systems such as valves, actuators, cylinders and sensors, have been redesigned for increased accuracy of motion control and for overall superior performance of pneumatic systems. Modifications in control valves can reduce actuator speeds as they reach stopping points, hence, producing proportional pressure output. Cylinders, on the other hand, are provided with better accuracy unlike their predecessors., Modifications to conventional components have moved pneumatic systems into the worm of highly accurate motion control. Although pneumatics are known for their high speed, the compressibility of air has, until [...]

Bang-bang is the term often used to describe basic directional-control valves. It refers to how the valves shift -- from fully open to fully closed. This usually occurs in an [...]

Computerized training programs provide an understanding of the basic principles of hydraulics and pneumatics. The Plato Industrial Automation Training Program from Control Data Corp. is designed for a broad range [...]

Pneumatic logic system controls diving vessel propulsion Using only two T-shaped combined control head levers and two manual clutch selector valves, the captain of the USS Ortolan (ASR 22) may [...]

Automatic Flow Control Valves Safety regulations and local codes frequently require automatic valve operation in processing systems to protect workers from exposure to hazardous or toxic substances. And increasing labor [...]

Arterial blood pressure is traditionally measured through non-invasive blood pressure monitoring. The introduction of the automatic oscillometric technique improved the traditional method by removing the need for a technician. An even more impressive change has been developed by the creation of an alternative circuit to substitute digital valves with proportional valves. These proportional valves allows variable deflation rates for continuous pulse measurements to improve process speed., Versatile, clean compressed air or gas and leak-free hydraulic systems provide precisely controlled power behind the scenes in the health-care environment Non-invasive blood pressure monitoring is a well-established technique for [...]

HIGH TECHNOLOGY CONTROL VALVES Over the past decade, control valve design selection has become increasingly complex. New plants and processes are demanding valves which have to be virtually failure proof, […]

EFD Inc introduces the EFD 750 Series of valves without seals to eliminate the problem caused by defective seals. Inefficient seals cause dripping and leakage of the adhesies, a malfunction which can harm the quality of the end product. In the EFD 750 series valves, a diaphragm made ultra-high molecular weight irradiated polyethylene is used instead of seals. The diaphragm controls the release of adhesives, thus, improving the adhesive dispensing process., Worn-out seals are the main culprit when adhesive dispense valves fail or shut off only partially, causing a sticky mess. EFD Inc., East Providence, R.I., eliminated the problem by designing [...]

The familiar 55-gal metal drum is still the most common container used to deliver hydraulic fluid. Fluid manufacturers advise storing these drums horizontally -- particularly if they are kept outdoors [...]

One of the latest advances in pneumatic technology is the development of fittings that contain a control element. Thus, the fittings not only connect tubing to a cylinder, they also [...]

Tank Tender pneumatic gauges Looking through the 90' Cheoy Lee motor yacht Tropic Ana a few months ago, I saw a single gauge in the pilothouse that measures the level […]

Simple clamp-and-work circuit eliminates limit valves In many pneumatic circuits, limit valves are used to sense the ends of actuator strokes, and to shift the main valve with pilot air [...]