Pentair 1 3/16" x 1 1/2" x 1/16" HiFlow Plastic Washer

The Pentair 1-13/16" x 1-1/2" x 1/16" Hi-Flow Plastic Washer (Product #: 272505) is a factory-original OEM replacement friction-reduction component designed to maintain smooth, effortless handle operation within Pentair and PacFab 1.5-inch top-mount and side-mount six-position multiport backwash valves. Specifically utilized to service residential filtration equipment like Sand Dollar® and Tagelus® pool sand filters, this thin white spacer ring fits over the central vertical diverter stem, resting directly beneath the high-tension compression spring inside the valve cover assembly. Injection-molded from a premium, low-friction engineering plastic polymer, the washer provides exceptional structural rigidity and permanent immunity to chemical corrosion while acting as a mechanical thrust bearing. By isolating the rotating diverter stem from the stationary spring, it absorbs the physical downward force and rotational torque generated when a pool owner or technician depresses and turns the handle to select different cycles, preventing the spring from binding, grinding, or wearing down the internal plastic housings. Engineered to handle continuous pool operating pressures up to 50 PSI and withstand extreme pump room heat, this featherweight part prevents mechanical sticking and ensures the valve assembly maintains peak operational efficiency. The physical weight of this single Pentair Hi-Flow Plastic Washer is approximately 0.005 pounds (less than 0.08 ounces, with a nominal packaged shipping weight of roughly 0.02 pounds), providing pool professionals and DIY homeowners with an essential, durable, and low-cost hardware solution for flawless water circulation control.