Valve Type CS / SS SWING CHECK VALVE - FL / BW Design Std BS 1868 / API 600 / ASME B16.34 Size Range 40 DN to 400 DN [1 1/2 to 16] Body [CS - ASTM A 216 Gr. WCB] [SS - ASTM A 351 Gr.CF8 / CF8M] Trim AISI 410 / 304 / 316 Seat / Disc 13% Cr. Steel / AISI 410 / 304 / 316 Design Features Swing type, Bolted Cover, Gravitational Disc, Horizontal / Vertical Mounting Pr.Rating ASME - Class 150 / 300 / 600 Face to Face ASME B 16.10 / EN 558 -1 / API 6D End Connection Flanged ASME B16.5, RF - CLASS 150 / 300 / 600 Butt Weld ASME B16.25 Testing Std. BS EN 12266 - 1 [BS 6755-1] / API 598 Optional Soft Seat / Renewable Seat / Stellite Hard facing / Dead weight Non Slam / RTJ Flanges / By Pass arrangement / Special MOC: Austenitic and Duplex Stainless Steels