Check valves are automatic one-way flow control valves that open under forward pressure and close immediately when flow stops or reverses — protecting pumps, equipment, and processes from backflow, siphoning, and contamination. Unlike ball valves or gate valves, check valves require no operator action; they respond to flow conditions automatically.
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1/2 in. 316 Stainless Steel Inline Check Valve | 949403 -
1/2 in. 316 Stainless Steel Swing Check Valve, Threaded (NPT) (949353) -
1/2 in. Barrel Spring Check Valve -
1/2 in. Brass Inline Check Valve, Threaded (944430) -
1/2 in. Brass Swing Check Valve, Threaded (NPT) (940352) -
1/2 in. Brass Y-Pattern Check Valve, Solder (C x C) (940362B) -
1/2 in. Brass Y-Pattern Check Valve, Threaded (NPT) (940352B) -
1/2 in. Inline Check Valve, Vertical or Horizontal (947143) -
1/2 in. Stainless Steel Inline Check Valve -
1/2 in. Stainless Steel Male x Female Spring Check Valve -
1/2 in. Stainless Steel Spring Check Valve, FPT x FPT (949453) -
1/2 in. Stainless Steel Y Spring Check Valve -
3/4 in. Female x Female PVC Inline Spring-Loaded Check Valve -
3/4 in. Glue Inline Plastic Check Valve -
3/4 in. Lead-Free Brass Check Valve | 944431LF -
3/4 in. Lead-Free Brass Swing Check Valve, Copper x Copper | 940363LF -
3/4 in. Lead-Free Brass Swing Check Valve, Female NPT | 940353LF -
3/4 in. Brass Inline Check Valve, Buna-N | 944404 -
3/4 in. Brass Inline Check Valve, Viton | 944404V -
3/4 in. Brass Spring Check Valve, 500 PSI, Female NPT x Female NPT, NBR Seal | 46564 -
3/4 in. Brass Spring Check Valve, 500 PSI, Female NPT x Male NPT, NBR Seal | 46569 -
3/4 in. Brass Spring Check Valve, 500 PSI, Female NPT x Female NPT, Viton Seal | 46564V -
3/4 in. Brass Spring Check Valve, 500 PSI, Female NPT x Male NPT, Viton Seal | 46569V -
3/4 in. 316 Stainless Steel Inline Check Valve | 949404
