Pentair 2" x 2.5" Black Valve Adapter Kit

The Pentair 2" x 2.5" Black Valve Adapter Kit (part number 270138) is a premium plumbing installation package designed to connect Pentair 2-inch multiport control valves, slide valves, and high-capacity cartridge or D.E. filters to standard pool circulation lines. Injection-molded from a high-impact, UV-stabilized, and chemical-resistant polymer composite, this kit includes two heavy-duty threaded bulkhead adapters, thick black locking union nuts, and specialized compression O-rings. Its primary structural role is to step up plumbing flexibility by accommodating either a 2-inch slip pipe internally or a 2.5-inch spigot connection externally, providing a secure, leak-proof transition capable of managing high-velocity hydraulic flow rates. By creating a reliable union junction directly at the filter or valve port, this kit allows service technicians to easily disconnect the main plumbing for winterization, equipment servicing, or system replacements without cutting the rigid PVC lines. Built to withstand continuous internal pressures up to 50 PSI and prolonged exposure to harsh pool chemicals, the complete adapter kit carries a combined product and shipping weight of approximately 1.10 pounds.