Check Valves limit the flow of water to one direction. This prevents water from flowing backwards or backing up into your pump or filter. Priming pumps is much easier if a check valve is installed on the intake side of the pump.These are full flow type valves with no springs or flow restrictions
Can be mounted vertical or horizontal
The clear 2 inch valve has a clear body and white pvc unions. Much less likely to crack.
If your pond's surface is frozen over, Do Not break the ice, doing so could harm your fish. Instead, use warm water to melt a hole in the ice or use a pond Deicers to keep a hole open.
