This Valterra 200-C20 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 as a result of water and oils, and its swing/spring combination design allows the valve to be installed in any position. It has a 2″ slip connection at every end, which will have to 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 to be used with landscape and irrigation, pool and spa, aquaculture, and general purpose applications.
Check valves have two ports and restrict the Float of fluids and other loose materials through a pipe or passageway to one direction. Float enters through one port and exits in the course of the other, closing when Float reverses or stops. Two common kinds 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 Float of fluid in a forward direction, and a swing check valve has a movable disc on a hinge to block reverse Float. Check valves are rated by their cracking pressure (the minimum upstream pressure required for the valve to operate), and they’re used in more than a few 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.
Schedule 40 PVC construction for strength and resistance to corrosion and chemicals
EPDM seal for resistance to water and oils
Maximum pressure rating of 150 psi
Spring tension of 1/2 lb. for safe closure of valve
2″ slip connections