piston valve


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piston valve

[′pis·tən ¦valv]
(mechanical engineering)
A cylindrical type of steam engine slide valve for admission and exhaust of steam.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
When the piston moves downwards, the foot valve closes, preventing backflow, and the piston valve opens, allowing the piston to move down through the water in the cylinder.
Asco products include solenoid pilot valves, angle body piston valves, linear indicators, redundant control systems, and pressure sensors.