MODEL SJ-900 SWING CHECK VALVE
The Shurjoint Model SJ-900 Swing Check Valve is a grooved-end check valve featuring a spring-loaded wide-open clapper and a non-stick leak tight EPDM rubber seal. With a rated working pressure of 300 psi (20 bar), the valve can be installed in the horizontal or vertical position (upward flow only). Valves are tested to API 598.
Important Note: The placement of check valves too close to sources of unstable flows may damage the system and reduce valve life. Sound piping practices dictate check valves should always be installed a minimum of five (5) times the pipe diameter downstream from pumps, reducers, elbows and the like. Distances between three (3) and five (5) times are allowable when flow velocity does not exceed eight (8) feet per second (2.4 mps). Distances less than three diameters are not recommended and will void any warranty.
*Working pressure is based on connection with roll- or cut-grooved standard wall carbon steel pipe.