White PVC Swing Check Valves, Slip Ends (SLIP) Dream Pond Built-in air relief valve and

Built-in air relief valve and pressure gauge prevents filter failure

AP-60 and AP-100 air pumps

Using a pump producing pressure greater than 22 PSI (which is not intended for use with pond equipment) will void the warranty and possibly damage equipment

void ETL approval

Compatible with all liquid and powder test kits

White PVC Swing Check Valves, Slip Ends (SLIP) Dream Pond Built-in air relief valve andCheck 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