Valterra 200-C15W PVC Swing (No Spring) Check Valve, Clear, 1-1/2″ Slip

Amazon.com Price: $24.91 (as of 02/01/2024 23:56 PST- Details)

Clear PVC for corrosion resistance, high strength, and less weight than fittings made from metal
Full flow design for insignificant flow loss at swing check
Slip connection for easy attachment