Pentair SD60 Standpipe Assembly

The Pentair SD60 Standpipe Assembly (part number 152225 or 152237) is a crucial internal plumbing backbone engineered specifically for the 22-inch Pentair Sand Dollar SD60 and Sta-Rite Cristal-Flo II top-mount pool and spa sand filtration systems. Injection-molded from a heavy-walled, high-impact PVC and ABS thermoplastic composite, this rigid center column serves as the primary vertical conduit for water circulation within the pressurized sand tank. Its vital structural role is to connect the top-mounted multiport backwash control valve directly to the lateral collector hub positioned at the very base of the filter shell, ensuring that high-velocity water is seamlessly transported through the core of the system without disrupting the surrounding media bed. Built to withstand continuous internal hydraulic pressures up to 50 PSI, intense backwashing flow reversals, and a relentless downward load from up to 250 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 robust plastic pipe pre-fitted with heavy-duty connection couplers, the complete center standpipe assembly carries an individual product and shipping weight of approximately 1.85 pounds (about 29.6 ounces).