Check valves are automatic one-way flow control valves that open under forward pressure and close when flow stops or reverses, helping prevent reverse flow without operator action. Unlike ball or gate valves, they respond to flow conditions on their own.
All Check Valves
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2-1/2 in. Brass Swing Check Valve -
2-1/2 in. Brass Y-Pattern Check Valve, Threaded (NPT) -
2-1/2 in. Ductile Iron Double Door Wafer Check Valve -
3 in. Brass Inline Check Valve, Buna-N -
3 in. Brass Inline Check Valve, Viton -
3 in. Lead-Free Brass Check Valve, IPS Threaded -
3 in. Lead-Free Brass Swing Check Valve, IPS Threaded -
3 in. Ductile Iron Swing Check Valve, Flanged — AWWA C508 -
3 in. Ductile Iron Flanged Swing Check Valve with Lever & Weight -
3 in. Brass Swing Check Valve, 200 psi WOG -
3 in. Ductile Iron Double Door Wafer Check Valve -
3 in. Ductile Iron Flanged Swing Check Valve — Midland Catalog-Designated UL -
4 in. Brass Inline Check Valve, Buna-N -
4 in. Brass Inline Check Valve, Viton -
4 in. Lead-Free Brass Swing Check Valve, IPS Threaded -
4 in. Ductile Iron Swing Check Valve, Flanged — AWWA C508 -
4 in. Ductile Iron Flanged Swing Check Valve with Lever & Weight -
4 in. Brass Swing Check Valve, 200 psi WOG -
4 in. Ductile Iron Double Door Wafer Check Valve -
4 in. Ductile Iron Double-Door Wafer Check Valve — Midland Catalog-Designated UL 312 / ULC -
4 in. Ductile Iron Flanged Swing Check Valve — Midland Catalog-Designated UL -
5 in. Ductile Iron Double Door Wafer Check Valve -
6 in. Ductile Iron Swing Check Valve, Flanged — AWWA C508 -
6 in. Ductile Iron Flanged Swing Check Valve with Lever & Weight
