Pentair Clean & Clear Plus / Quad D.E. 2" MBT Thread Upper Bulkhead

The Pentair Clean & Clear Plus / Quad D.E. 2" MBT Thread Upper Bulkhead (part number 190142 or 190142Z) is a specialized, heavy-duty external plumbing connection fitting designed exclusively for high-capacity Pentair Clean & Clear Plus cartridge filters and Quad D.E. pool and spa filtration systems. Injection-molded from a thick-walled, high-impact, and UV-stabilized polymer composite, this structural union component features a 2-inch Male Buttress Thread (MBT) configuration designed to pass securely through the upper port opening of the composite filter tank shell. Its primary functional role is to serve as the critical intake or discharge bridge, anchoring the internal plumbing network or top manifold firmly to the external pool return lines. When compressed tightly against the tank wall by its accompanying retaining nut and heavy-gauge O-ring, it establishes an absolute airtight and watertight pressure boundary capable of safely containing continuous hydraulic operating flow rates and internal system pressures up to 50 PSI without weeping or leaking. Built to endure constant exposure to high-velocity water flow, extreme thermal shifts, and highly concentrated sanitizing chemicals like chlorine, bromine, and seasonal acid washes, this robust fitting ensures long-term structural integrity at a key stress point. Due to its thick-walled, robust plastic architecture designed to withstand high torque, this individual upper bulkhead component carries a net product and shipping weight of approximately 0.31 to 0.45 pounds (about 5.0 to 7.2 ounces).