Description

piston valve is a device used to control the motion of a fluid along a tube or pipe by means of the linear motion of a piston within a chamber or cylinder. Examples of piston valves are: … The valves used in pneumatic cannons. The valves used in many stationary steam engines and steam locomotives. Description Piston Valves Size: 1/2″ to 8″ (15 mm to 200 mm) ASME Class: Class 150, 300 and 800 Design Standard: API 602, ASME B 16.34 Salient Features: Large effective sealing area – Reliable shutoff (ANSI Leakage Class VI) Glandless design – No leakage to atmosphere Reinforced sealing rings and Belleville washers – Compensates for thermal expansions, Reliability Sealing not affected by presence of dirt or any other impurities in the media Online Serviceable – Sealing rings can be replaced without removing the valve from line Long service life Lower cost of ownership