This sump check valve prevents back flow to sump pumps. It fits both pedestal and submersible sump pumps with 1-1/4-in or 1-1/2-in discharge. Easy to install, this check valve is constructed of rubber. Prevents backflow of water into sump basin which prevents pump from cycling on and off too often Fits all sump pumps with 1-1/4-in or 1-1/2-in discharge pipe Reversible couplers are easy to adjust Type: Check valve Low Pressure: N/A Material: Rubber On/Off Pressure Setting: N/A Package Contents: Check Valve - 1-1/4 in or 1-1/2 in Package Quantity: 1 Warranty: 90-day limited CA Residents: Prop 65 Warning(s): Yes UNSPSC: 40151500