3" Coupling Check Valve Assembly - EP9700 Koi & Goldfish Treatments This basic 3" bottom drain

This basic 3" bottom drain allows dirt and debris to be removed from the pond bottom without the hassle of vacuuming or drain-downs

0" 42"x25" Motor Freight

These units are designed to easily connect a pump that is in a skimmer or vault to a flexible or rigid PVC waterline

which eliminates osmotic stress (Koi have to pump water out of themselves constantly when the amount of salt in the water is less than the amount of salt in their blood)

then lifts and spins it

3" Coupling Check Valve Assembly - EP9700 Koi & Goldfish Treatments This basic 3" bottom drainThese 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