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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1-1/2 in. Barrel Spring Check Valve -
1-1/2 in. Brass Inline Check Valve, Threaded (944434) -
1-1/2 in. Brass Swing Check Valve, Threaded (NPT) (940356) -
1-1/2 in. Brass Y-Pattern Check Valve, Solder (C x C) (940366B) -
1-1/2 in. Brass Y-Pattern Check Valve, Threaded (NPT) (940356B) -
1-1/2 in. Stainless Steel Y-Pattern Spring Check Valve (949487) -
2 in. Lead-Free Brass Check Valve | 944435LF -
2 in. Lead-Free Brass Swing Check Valve, Copper x Copper | 940367LF -
2 in. Lead-Free Brass Swing Check Valve, Female NPT | 940357LF -
2 in. Brass Inline Check Valve, Buna-N | 944408 -
2 in. Brass Inline Check Valve, Viton | 944408V -
2 in. 316 Stainless Steel Inline Check Valve | 949408 -
2 in. 316 Stainless Steel Swing Check Valve, Threaded (NPT) (949358) -
2 in. Brass Inline Check Valve, Threaded (944435) -
2 in. Brass Swing Check Valve, Threaded (NPT) (940357) -
2 in. Brass Y-Pattern Check Valve, Solder (C x C) (940367B) -
2 in. Brass Y-Pattern Check Valve, Threaded (NPT) (940357B) -
2 in. Ductile Iron Double Door Wafer Check Valve | 963002 -
2 in. Stainless Steel Barrel Spring Check Valve (949448) -
2 in. Stainless Steel Check Valve (949435) -
2 in. Stainless Steel Y-Pattern Spring Check Valve (949488) -
2-1/2 in. Brass Inline Check Valve, Buna-N | 944409 -
2-1/2 in. Brass Inline Check Valve, Viton | 944409V -
2-1/2 in. Lead-Free Brass Swing Check Valve, IPS Threaded | 940358LF
