Spring check valves use a spring to return the disc to its seat, so they open once forward pressure exceeds the spring and close when flow stops. Apex Flow Solutions groups the spring-loaded families here: brass spring check valves, stainless barrel-spring and inline spring models, and PVC spring-loaded inline valves.
All spring check valves
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3/4 in. Stainless Steel Spring Check Valve, MPT x FPT -
1 in. Stainless Steel Barrel Spring Check Valve -
1 in. Stainless Steel Spring Check Valve, FPT x FPT -
1 in. Stainless Steel Spring Check Valve, MPT x FPT -
1-1/4 in. Inline Female x Female PVC Spring-Loaded Check Valve -
1-1/4 in. Stainless Steel Barrel Spring Check Valve -
1-1/2 in. Barrel Spring Check Valve -
2 in. Stainless Steel Barrel Spring Check Valve -
1 in. Female x Female PVC Spring-Loaded Check Valve
