Our Cast steel range of swing check valves includes Class 150, 300 and 600. D&D International Valves Ltd stock swing check valves manufactured by TT Valves UK Ltd. CHECK VALVE DEFINITION Briefly said, a check valve is a protection device that prevents the fluid from flowing in an unwanted direction within the piping system or the pipeline (as backflows may damage upstream equipment). Back pressure in the line holds the disc in the closed position. All Check valves are self-activating valves, designed to prevent back flow and are used in most cases to protect equipment, for instance pumps, product and people. This type of valves is available with cast and forged bodies (BS 1868, API 6D, API 602) and in several designs as swing, ball, lift, stop and piston designs. The disc swings into the open position as the media flows through the line. API 594/API 6D/ASME B16.
Flow is in a straight line through the valve resulting in minimal pressure drop. BS1868 Swing Check Valve, Cast steel swing check valve, swing type no-return valve, flanged swing check valve is used to prevent back flow in the line. API 6D/BS 1868 Swing Check Valve API 6D/BS 1868 Swing Check Valve Product Details: Place of Origin: China Certification: ISO9001-CE boteli.