Pentair 1.5" PVC Threaded Adapter Valve

The Pentair 1.5" PVC Threaded Adapter Valve fitting (Product #: 271092) is a factory-original OEM replacement plumbing connection engineered to bridge the hydraulic pathways between high-performance backwash valves and primary pool filtration loops. Specifically designed to interface with Pentair, PacFab, and Praher 1.5-inch side-mount and top-mount multiport backwash valves—which are commonly paired with residential Sand Dollar® and Tagelus® sand filters—this robust adapter features precision-machined threads on one end to form an absolute, leak-proof mechanical seal against the filter's bulkhead fittings. The opposite end is configured as a smooth slip/socket connection, allowing for a standard PVC solvent-weld connection to the pool's main circulation lines. Injection-molded from a thick-walled, high-impact, UV-stabilized PVC polymer, the adapter delivers complete immunity to structural corrosion, heavy mineral scaling, and continuous exposure to aggressive pool sanitizers under operational system line pressures up to 50 PSI. By providing a secure, hydraulically optimized transition, it completely eliminates pressure-side water weeping and blocks catastrophic suction-side air induction that would otherwise cause pump cavitation and a loss of system prime. The physical dry weight of this single Pentair 1.5" Threaded Adapter is approximately 0.18 pounds (roughly 2.88 ounces, with a packaged retail shipping weight of 0.30 pounds), providing pool service professionals and DIY homeowners with a vital, highly reliable plumbing standard for flawless pool water management.