Valterra PVC Swing/Spring Check Valve 1-1/2 in Union x Union 1/2 lb Tension Clear 200-CU15

Valterra 200-C15 check valve is made of clear schedule 40 PVC (polyvinyl chloride) for strength and resistance to corrosion and mild chemicals. 

Its EPDM (ethylene propylene diene monomer) seal resists degradation caused by water and oils, and its swing/spring combination design allows the valve to be installed in any position.