Pentair 3.25" x 7" Gasket Valve Seat Spider

Pentair 3.25" x 7" Multiport Valve Diverter Spider Gasket (271104 / 271148)

The Pentair 3.25-inch inside diameter by 7-inch outside diameter Multiport Valve Diverter Spider Gasket (Product #: 271104 / 271148) is a rugged, factory-original OEM sealing component engineered to manage precise internal fluid routing inside Pentair, PacFab, and Praher 2-inch side-mount and top-mount six-position multiport backwash valves. Specifically utilized to service high-capacity filtration systems—such as Triton® II sand filters and Quad D.E.® cartridge-style separation tanks—this critical gasket features a flat, spoke-like web design radiating from a central stabilization ring. Custom-molded to sit flush inside matching precision channels in the lower valve body, it creates an absolute hydraulic barrier between isolated flow chambers. When the valve's upper handle is depressed and turned, the internal diverter presses firmly down onto this rubber matrix, sealing off inactive paths while directing the pool's water stream exclusively into the active cycle, whether it is Filter, Backwash, Rinse, Waste, Closed, or Recirculate. Molded from a high-density, premium black neoprene rubber compound, it delivers exceptional compression memory, ozone resistance, and structural elasticity, allowing it to withstand continuous exposure to high chlorine concentrations, heavy mineral scaling, and the intense mechanical abrasion of a shifting diverter without tearing, twisting, or stretching. Replacing a worn or stretched spider gasket is a vital maintenance step that instantly cures common pump room issues, such as water continuously weeping out of the backwash waste line or unfiltered water bypassing the media and blowing back into the pool. Built to withstand continuous pool operating line pressures up to 50 PSI and extreme summer pump room temperatures, this part ensures the equipment pad maintains peak hydraulic efficiency. The physical dry product weight of this single Pentair 3.25" x 7" spider gasket is approximately 0.12 pounds (roughly 1.92 ounces, with a packaged shipping weight of approximately 0.20 pounds), providing pool professionals and DIY homeowners with an essential, durable, and highly precise solution for flawless water management.