The check valve is our check valve available from class 150/300/600/900/1500 and ANSI flanges. Made of F316 stainless steel forging . The range is from 1/2 ″ to 2 ″ (inches). Maximum working pressure: 140 Bar. The working temperature range covers -29ºC to + 425ºC . The valve features a stellite-hardened stainless seat. Indicated to retain the passage of aqueous media, oil and gas.