Pentair 8.25" Lower Piping Assembly

The Pentair 8.25" Lower Piping Assembly (part number 154807) is a specialized internal plumbing component engineered exclusively for high-capacity Pentair Triton II and Triton C commercial sand filtration systems, specifically the 30-inch tank diameter TR100 and TR100C models. Injection-molded from a thick-walled, schedule-rated PVC composite, this rigid 8.25-inch connection segment functions as a critical junction for the lower underdrain manifold, securely linking the central collector hub directly to the tank's main return bulkhead ports. Its primary structural role is to channel high-velocity, fully clarified water out of the sand bed and into the return lines, while continuously bearing the intense downward crushing weight of up to 600 pounds of wet silica sand or glass media. Built to withstand turbulent backwashing flow reversals, continuous system pressures up to 50 PSI, and relentless exposure to corrosive pool sanitizers like chlorine, bromine, and acid washes, this pipe eliminates internal pressure bypass leaks. Despite its robust, heavy-duty construction designed for high-flow filtration, this internal plumbing section maintains a manageable, lightweight design for service technicians during media changes, carrying an individual product and shipping weight of approximately 1.32 to 1.45 pounds.