Photo 1 of PVC Union Check Valve, 1 inch True Union Check Valve, Transparent Blue UPVC Check Valve (Heavy Duty) with Slip x Slip Full Port, Prevent Backflow, Suitable for Sump Pump, Irrigation, Pool, Sprinkler

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Photo 1 of PVC Union Check Valve, 1 inch True Union Check Valve, Transparent Blue UPVC Check Valve (Heavy Duty) with Slip x Slip Full Port, Prevent Backflow, Suitable for Sump Pump, Irrigation, Pool, SprinklerPhoto 2 of PVC Union Check Valve, 1 inch True Union Check Valve, Transparent Blue UPVC Check Valve (Heavy Duty) with Slip x Slip Full Port, Prevent Backflow, Suitable for Sump Pump, Irrigation, Pool, Sprinkler