Description

This Maskam 200-CUS50 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. It has 50 mm slip connections at both ends, which must be fastened with glue. It has a maximum pressure rating of 10 Bar. 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.

Swing check valves have 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.