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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3/4 in. 316 Stainless Steel Swing Check Valve -
3/4 in. Brass 316 Stainless Barrel Spring Check Valve -
3/4 in. Brass Inline Check Valve, Threaded (944431) -
3/4 in. Brass Swing Check Valve, Threaded (NPT) (940353) -
3/4 in. Brass Y-Pattern Check Valve, Solder (C x C) (940363B) -
3/4 in. Brass Y-Pattern Check Valve, Threaded (NPT) (940353B) -
3/4 in. Inline Check Valve, Vertical or Horizontal (947144) -
3/4 in. Stainless Steel Check Valve -
3/4 in. Stainless Steel Spring Check Valve, FPT x FPT (949454) -
3/4 in. Stainless Steel Spring Check Valve, MPT x FPT (949474) -
3/4 in. Stainless Steel Y Spring Check Valve -
1 in. Lead-Free Brass Swing Check Valve, Female NPT | 940354LF -
1 in. Brass Inline Check Valve, Buna-N | 944405 -
1 in. Brass Inline Check Valve, Viton | 944405V -
1 in. 316 Stainless Steel Inline Check Valve | 949405 -
1 in. 316 Stainless Steel Swing Check Valve, Threaded (NPT) (949355) -
1 in. Brass Inline Check Valve, Threaded (944432) -
1 in. Brass Swing Check Valve, Threaded (NPT) (940354) -
1 in. Brass Y-Pattern Check Valve, Solder (C x C) (940364B) -
1 in. Brass Y-Pattern Check Valve, Threaded (NPT) (940354B) -
1 in. Inline Check Valve, Vertical or Horizontal (947145) -
1 in. Stainless Steel Barrel Spring Check Valve (949445) -
1 in. Stainless Steel Check Valve (949432) -
1 in. Stainless Steel Spring Check Valve, FPT x FPT (949455)
