Pentair 1 3/16" HiFlow Compression Spring

The Pentair 1-3/16" Hi-Flow™ Multiport Valve Compression Spring (Product #: 272511) is a factory-original OEM mechanical hardware component designed to provide the critical tension and downward clamping force required to maintain internal hydraulic seals within pool and spa filtration systems. Engineered specifically for Pentair and PacFab 1.5-inch and 2-inch top-mount and side-mount six-position multiport backwash valves—commonly found on Sand Dollar® and Tagelus® sand filters—this heavy-duty coil spring wraps around the central vertical shaft of the internal diverter rotor. When a pool technician or homeowner releases the manual control lever, the spring expands forcefully, compressing the internal diverter firmly down onto the rubber spider gasket to create an airtight barrier between isolated flow chambers. Precision-coiled from a high-tensile, industrial-grade stainless steel alloy, this spring delivers exceptional resilience and corrosion resistance, ensuring it will not rust or weaken despite constant immersion in high chlorine concentrations, salt-chlorine generation, and aggressive pool chemistry. By maintaining uniform vertical pressure, this spring prevents common filtration bypass issues, such as water weeping out of the backwash waste line or unfiltered water bypassing the media tank. Built to handle continuous system operating pressures up to 50 PSI and absorb millions of compression cycles throughout its operational lifespan, this part is vital for smooth handle operation and mode cycling. The physical dry weight of this single Pentair Hi-Flow Compression Spring is approximately 0.18 pounds (roughly 2.88 ounces, with an overall diameter of 1-3/16 inches and a nominal packaged shipping weight of 0.25 pounds), providing an incredibly durable, robust, and indispensable hardware component for flawless pool water management.