White PVC Spring Check Valves, Slip Ends (SLIP) Size:1-1/2" SLIP For AlphaOne filters with 3"

For AlphaOne filters with 3" fittings

Outer 87"W 47"D 88"H 6' Cambridge Arbors with Deck Inner 72"W 40"D 81"H

Lightweight

Each scoop treats 48

White PVC Spring Check Valves, Slip Ends (SLIP) Size:1-1/2" SLIP For AlphaOne filters with 3"Check valves are essential when using a waterfall filter in conjunction with a pond skimmer. The check valve will prevent water in the filter from back flowing into the skimmer when the pump is switched off and keep water in bogs when the pump is turned off and other purposes. Check valves are also essential when an external pump is being used. The check valve prevents the water from draining back into the pond or reservoir, keeping the external pump