Pentair 263053 7-4/5-Inch Push Pull Valve Replacement Pool/Spa Sand and D.E. Filter Push pull valve replacement Fits Pentair Sta-Rite System 2 modular PLDE-series, System 3 SD-series and modular SMD-series pool/spa D.E. filters Also fits Pentair Sta-Rite System 3 SS-series pool and spa sand filters Unique handle design allows easier operation; pin locks valve in filter position Two-position backwash valves have minimal flow restriction; measures 7-4/5-inch centerline