Legend Valve® T-312 Check Valve with EPDM Seats, Ductile Iron Disc, 2-1/2" Wafer

1" FNPT In-Line Brass Check Valve with Stainless Steel Poppet. The Model 400 uses a stainless steel poppet for a metal-to-metal seal without the use of an o-ring and is best suited for heavy industrial usage. Product is Made in the USA. Maximum working pressure 200 psi, Maximum temperature 300°F, Cracking pressure 1-2 lbs. Use with hot water, cold water, steam, oil, gas, compounds, chemicals. Not for air compressor use.

8" T-311 Cast Iron Swing Check Valve Features: Swing-check design is ideal for all basic commercial/industrial general backflow prevention applications Durable cast iron construction resists pipeline stresses and distortion IBBM design: Iron-body-bronze-mount, with bronze body seat and flapper-disc sealing rings. The pliable rings provide an improved seal over plain iron-on-iron designs Class 125/150 full-face flange-type end connections All external surfaces are primed and painted for corrosion resistance Can be installed in either vertical (upward flow only) or horizontal (cover ...

Aswing valvehas a disc, the movable part, which blocks the flow as it swings on a hinge or a trunnion , either onto the seat to block reverse flow or off the seat to allow forward flow.

True Union Ball Check Valves Features: Corrosion resistant Good flow characteristics Engineered to insure a positive seal that will prevent reverse flow even with back pressure Quick and easy disassembly without the use of special tools Ball seals by gravity in vertical position, only 2-4 PSI needed in position other than vertical

Check valves are mechanical valves that permit gases and liquids to flow in only one direction, preventing flow from reversing. They are classified as one-way directional valves. Fluid/gas flow in the desired direction opens the valve, while backflow forces the valve closed