This is a Pentair WC36-22 Clamp Knob for specific Sta-Rite Pentair filters and pumps. This part is designed for the Posi-Flo II Cartridge Filters, Cristal-Flo High-Rate Sand Filters, Max-E-Glas/Dura-Glas Series Pumps, IntelliPro VS 3050 Pumps, and Max-E-Pro Series Pumps.








