What is a check valve

Humphrey offers check valves from the miniature TAC family and specialty Check Valves (with override) from our Classic Diaphragm-Poppet Series. The Series 225 Auto-Soft is a flow-actuated check valve used for throttling roughing pumps during initial evacuation. Auto-Soft check valves close very quickly ... Description. A 1-way check valve permits flow in 1 direction only. Radium Engineering check valves feature a lightweight anodized aluminum body with FKM seals ... E/E3 Alarm Check Valve with E2 Euro Stainless Steel Trim · Grooved Connections · Sprinklers · Valves & Systems · Wet System Valves · Dry System Valves · General ... 1IN STR DUAL CHECK VALVE. Catalog Section Price Book Distributor Portal. Description Specifications Downloads About Ford Meter Box. 1.5" Threaded Check Valve, Weep Hole, No-Hub. Model PS-CVWNH. Where to buy. Check Valve Description 1.5" Threaded Check Valve, Weep Hole, No-Hub. Nov 14, 2018 ... A check valve on each pump outlet was needed to prevent water from flowing back through the other pump should one fail. It works fine, and the ... The Series 3600 Swing Check Valves prevent backflow in irrigation water control lines. Features: Cast aluminum body combines lightweight strength and corrosion ... The HDL 5087/AVK Series 53 ball check valve is used for industrial and municipal back flow protection. The simple and cost effective design is an ideal ... Norriseal check valves are designed for prevention of backflow in gas, air or liquid systems and are installed in critical services around the world. Contact an ...