2" Coupling Check Valve Assembly, TH150, TH250, TH400, TH750 Plug (MPT) This is a schedule 40

This is a schedule 40 PVC Cap used to stop flow through PVC pipe

which is 3 times stronger than glass-bonded silca air stones

The pump is UL listed for safety and has a 3 year warranty

This is the perfect level for handling Koi

so it can be shipped to any state

2" Coupling Check Valve Assembly, TH150, TH250, TH400, TH750 Plug (MPT) This is a schedule 40These units are designed to easily connect a pump that is in a skimmer or vault to a flexible or rigid PVC waterline. The check valve is important for stopping a backflow of water in the event of a power loss. Each unit has a heavy duty PVC Check Valve with a MNPT fitting that screws into the pump on one end, and a rubber coupling to connect to the water line on the other end. The table below shows which Check Valve Assemblies are compatible with