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For sump pump applications the THD1020 can be used with any 1.25 in. or 1.5 in. sump pump. The THD1020 features 1.25 in. or 1.5 in. combination rubber adapters and the industry s most durable check valve flapper. This is the world s most reliable sump pump check valve.Product Dimensions:Product Depth (in.):2.25Product Height (in.):7.15Product Length (in.):2.25Product Width (in.):2.25Valve Inlet Diameter (in.):1.5Valve Outlet Diameter (in.):1.5Product Details: Compatible Pipe Material:Multi-PurposeConnection:Slip-JointIndoor/Outdoor:Indoor,OutdoorMaterial:Acrylonitrile Butadiene Styrene (ABS)Maximum Pressure (psi):25Maximum Working Temperature (F):135Product Weight (lb.):0.613 lbRating:DWV