Stainless Steel Check Valves

Stainless steel check valves from a Taiwan manufacturer: swing type in 200 WOG PT threaded and JIS 10K / ANSI 150# flanged, plus a compact silent check valve. Sizes 1/2″ to 4″.

A check valve only has one job: let flow go one way and stop it coming back. Which type you need depends on how the line behaves when the pump stops.

We stock three. The swing check valve (316 cast stainless, ASTM A351 CF8M) has a hinged disc that opens with flow and drops shut when flow reverses. 200 WOG, PT threaded ends, 1/2″ to 3″. The flanged check valve is the same swing principle in 304 stainless with flanged ends, rated JIS 10K / ANSI 150#, 2″ to 4″. The silent check valve is a one-piece compact body with an internal spring, threaded, 1/2″ to 2″. The spring closes the disc as flow drops off, rather than waiting for the line to push it shut.

All three are stainless steel.

• Swing Check Valve, 200 WOG, PT Threaded — 316 cast stainless, 1/2″ to 3″
• Flanged Check Valve, JIS 10K / ANSI 150# — 304 stainless, 2″ to 4″
• One-Piece Silent Check Valve — 304 stainless, threaded, 1/2″ to 2″