Silent Sump Pump Check Valve, 2 Inch Quiet Check Valve For Sump Pump Prevent Backflow Noise Reduction Fit For 1-1/2 Inch Schedule 40 Pipe

1 1/2 Inch Sump Pump Check Valve-Silent Check Valve With Spring-Loaded Flapper, Check Valve For Backflow Prevention, Includes Steel Clamps Fit 1-1/2"

Pumpspy Threaded Quiet Sump Pump Check Valve With 100% Stainless Steel Clamps Included - Threads Directly Into The Pump's 1-1/2" NPT Discharge To

Hydro Master Plastic Sump Pump Check Valve With Stainless Steel Clamps For 1-1/2 Inch Or 1-1/4 Inch

Little Giant Pumps | Little Giant® Pumps Check Valve: 1-1/4 X 1-1/2" Pipe - Universal Check Valve For Sump Pumps, MNPT X Barb | Part 599059

Universal Sump Pump Check Valve Fits 1-1/2 Inch Or 1-1/4 Inch Pipe Slip On Valve With 4 Stainless Steel Hose Clamps No Frills PVC Flapper For Leak