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This Valterra 200-CU20 union check valve is made of clear schedule 40 PVC (polyvinyl chloride) for strength and resistance to corrosion and mild chemicals. Its EPDM (ethylene propylene diene monomer) seal resists degradation caused by water and oils, and the swing/spring construction of this valve makes it possible to install it in any position. It has a 2" slip connection at each end, which must be fastened with glue, a maximum pressure rating of 150 pounds per square inch (psi), and a spring tension of 1/2 lb. This check valve is suitable for use with landscape and irrigation, pool and spa, aquaculture, and general purpose applications.
Check valves have two ports and restrict the flow of fluids and other loose materials through a pipe or passageway to one direction. Flow enters through one port and exits through the other, closing when flow reverses or stops. Two common types of check valves are ball cone valves and swing check valves. A ball cone valve utilizes a spring-loaded ball seated against a cone-shaped interior surface to stop the flow of fluid in a forward direction, and a swing check valve has a movable disc on a hinge to block reverse flow. Check valves are rated by their cracking pressure (the minimum upstream pressure required for the valve to operate), and they are used in various water, gas, air, and steam lines.
Valterra Products manufactures and distributes valves, hoses, sewer systems, and pool and spa products. The company, founded in 1981, is headquartered in Mission Hills, CA.
Zumnique
Comentado en los Estados Unidos el 11 de julio de 2024
No se pudo cargar el contenido.
Army Vet
Comentado en los Estados Unidos el 5 de junio de 2024
This check valve was ordered to replace the loud THUNK check valve installed on my ejector pit. Installation requires some engineering, cutting, and solvent gluing PVC adapters to the existing line. I have installed these check valves on sump pump lines without difficulty and satisfactorily, so I believe this one will go "in" and be just as satisfactory as my sump pump line installations.
Steve Morris
Comentado en Canadá el 10 de marzo de 2024
I found having the viewing area a great help.
S.N.
Comentado en los Estados Unidos el 24 de abril de 2024
Bought one to replace an old, leaky check valve. Fits 2" PVC pipe (diameter slightly bigger than 2"). Works well, no sound at all. About half the price of what pool equipment store sells.
Cody
Comentado en Canadá el 16 de abril de 2023
This check valve is amazingly quiet was told by plumber that there is no valve quieter then the liberty one and this blows it out of the water not a noise very happy
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