Sta-Rite 18201-0300 ABS 6-Position Multiport Valve, 2 Inch Valve Port, Union Connection Design For System 3 Mod D.E. Filters 6-Position multiport valve replacement Fits Pentair Sta-Rite System 2 PLDE-series modular pool and spa D.E. filters Also fits Pentair Slide valves ABS slide valves/multiport valves and 1-1/2 and 2-inch multiport side mount valves Includes union connections 2-inch valve port Made of acrylonitrile butadiene styrene (ABS)