Pentair Tagelus 6" Buttress Thread Flange Adapter

The Pentair Tagelus 6" Buttress Thread Flange Adapter (part number 152520Z) is a specialized plumbing transition fitting engineered specifically for Pentair Tagelus top-mount sand filtration systems utilizing 1.5-inch multiport control valves. Injection-molded from a heavy-duty, high-impact polymer composite, this adapter features coarse 6-inch buttress threading designed to spin directly onto the structural neck of the fiberglass sand filter tank. Its primary structural role is to establish a secure mechanical bridge between the filter shell and the multiport backwash valve, while its integrated compression O-ring guarantees an absolute airtight and watertight seal. Built to withstand continuous hydraulic pressure up to 50 PSI, extreme outdoor UV weathering, and constant exposure to corrosive pool chemicals like chlorine and acid, this adapter prevents dangerous external leakage at the tank's main interface. Despite its thick-walled, pressure-rated design, this compact plumbing component remains highly manageable for field replacements, carrying a net product and shipping weight of approximately 0.70 pounds (about 11.2 ounces).