Pentair Triton C/C-3 Closure Square Ring

The Pentair 2" SD80 Standpipe Assembly (part number 152229 or 152240) is a heavy-duty internal plumbing backbone engineered exclusively for the 26-inch tank Pentair Sand Dollar SD80 and Sta-Rite Cristal-Flo II top-mount sand filtration systems configured with a high-flow 2-inch multiport backwash control valve. Injection-molded from thick-walled, high-impact PVC and ABS thermoplastic composites, this rigid center column functions as the primary vertical conduit for high-velocity water circulation inside the pressurized sand tank. Its vital structural role is to connect the top-mounted valve directly to the lateral collector hub arrangement positioned at the very base of the filter shell, ensuring that water is seamlessly transported through the core of the system without disrupting or channeling the surrounding filter media. Built to withstand continuous internal hydraulic operating pressures up to 50 PSI, forceful backwashing flow reversals, and a relentless downward load from up to 350 pounds of dense silica sand or glass media, this assembly features reinforced joints to prevent cracking or internal pressure bypass leaks. Because it consists of a lengthened, robust plastic pipe pre-fitted with heavy-duty 2-inch connection couplers, the complete center standpipe assembly carries an individual product and shipping weight of approximately 2.35 pounds (about 37.6 ounces).