Pentair 1.5" Sta-Rite® MultiPort Side Mount Valve Spider Gasket

The Pentair 1.5" Sta-Rite® Multiport Side-Mount Valve Spider Gasket (Product #: 14971-SM10E12) is a factory-original OEM replacement internal sealing component engineered to isolate the dynamic flow chambers of high-capacity pool and spa backwash manifolds. Specifically designed to fit the diverter spoke configuration within Sta-Rite® 1.5-inch side-mounted six-position multiport valves—which are commonly paired with premium System:2™ and System:3® series modular diatomaceous earth (D.E.) and sand filtration vessels—this specialized wheel-shaped gasket sits permanently glued inside the valve body tracks. When the manual control handle and spring-loaded rotor are compressed downward during standard filtration, this spoke barrier forms an airtight, absolute mechanical seal between separate water ports, effectively preventing pressurized pool water from cross-contaminating chambers or chronically weeping down the backwash waste line. Custom-molded from a premium, high-density elastomeric rubber compound, the component delivers exceptional compression memory, advanced ozone resistance, and low structural friction, allowing it to withstand continuous exposure to high chlorine or bromine concentrations, heavy pool mineral scaling, and intense thermal heat under operating line pressures up to 50 PSI without swelling, distorting, or dry-rotting. The physical dry product weight of this single Pentair 1.5" Sta-Rite Spider Gasket is approximately 0.12 pounds (roughly 1.92 ounces, with a packaged shipping weight of 0.25 pounds), providing an indispensable, highly reliable, and vital hardware replacement to restore optimal hydraulic pressure and maintain pristine pool water circulation.