3" Coupling Check Valve Assembly - All TM, TB, pumps Bulkhead Fittings All rocks come standard with

All rocks come standard with one screened vent

Transformers are UL listed and have a 3 year warranty

12v rechargeable heavy duty 7amp battery included

Commonly used in cleanout lines

3" Coupling Check Valve Assembly - All TM, TB, pumps Bulkhead Fittings All rocks come standard withThese 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