This Valve Offers Water-Hammer Relief for Existing Installations

Designed to provide water-hammer relief and tight, non-return shutoff for existing flanged piping systems, the Stop-Silent Check Valve AS 54 Model (photo) can be implemented directly into a flanged pipe system without structural or housing alterations. This valve features a cone design that assures tight shut-off to prevent backflow of liquid or gaseous media. The valve has no moving mechanical parts and consists only of two components: a perforated stainless-steel cone and a rubber membrane. This design eliminates water hammer and associated problems of noise and wear, resulting in quiet, noise-free operation. Performance ranges include operating temperatures from – 20 to 180°C and pressures of up to 232 psi. The valve can handle fluid flowrates of up to 10 ft/sec and gas flows of up to 50 ft/sec. — Great Western Supply Co., Houston, Tex.