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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Dual Check Valve, 1/4 in. Female NPT x 1/4 in. Male NPT, 304 Stainless Steel -
Single Check Valve, 1/4 in. Male Flare x 1/4 in. Male Flare, 304 Stainless Steel -
5/16 in. Brass Anti-Siphon Check Valve, Hose Barb x 1/4 in. MIP | 46530 -
3/8 in. Aluminum Anti-Siphon Valve, Hose Barb x Male NPT -
3/8 in. Inline Check Valve -
3/8 in. Brass Inline Check Valve, Buna-N | 944402 -
3/8 in. Brass Inline Check Valve, Viton | 944402V -
3/8 in. 316 Stainless Steel Inline Check Valve | 949402 -
3/8 in. Barrel Spring Check Valve -
3/8 in. Brass Y-Pattern Check Valve, Threaded (NPT) (940351B) -
3/8 in. Stainless Steel Spring Check Valve, FPT x FPT (949452) -
3/8 in. Stainless Steel Spring Check Valve, MPT x FPT (949472) -
3/8 in. Stainless Steel Y Spring Check Valve -
Dual Check Valve, 3/8 in. Male Flare x 3/8 in. Male Flare, 304 Stainless Steel -
Single Check Valve, 3/8 in. Female NPT x 3/8 in. Male NPT, 304 Stainless Steel -
1/2 in. Aluminum Anti-Siphon Valve, Hose Barb x Male NPT -
1/2 in. Glue Inline Plastic Check Valve -
1/2 in. Inline Female x Female PVC Spring-Loaded Check Valve -
1/2 in. Brass Inline Check Valve, Buna-N | 944403 -
1/2 in. Brass Inline Check Valve, Viton | 944403V -
1/2 in. Brass Compressor Tank Check Valve, Male x Female Compression | 87023 -
1/2 in. Brass Compressor Tank Check Valve, NPT x 1/2 in. Male Compression | 87021 -
1/2 in. Brass Compressor Tank Check Valve, NPT x 3/8 in. Compression | 87020 -
1/2 in. Brass Spring Check Valve, 500 PSI, Female NPT x Female NPT, NBR Seal
