The Pentair Reducer Adapter (86204215) is the OEM replacement specialty plumbing fitting for Pentair pool plumbing systems, stepping down from a 1-1/2" O.D. connection to a 1" slip fitting in Dark Gray. (Image is the White version) Pentair plumbing unions are available in a wide variety of configurations. Specialty fittings such as the snap-lock wall fitting, anchor cup and rope hooks and the molded, recessed steps are designed for ease of installation. Deck valve lid and rings allow for access to under deck valves and fittings. These fittings are manufactured to Pentair's high standards. Models to fit inside or outside of pipe No-flange return for superior plaster seal Jets for concrete construction Aerator/fountain inlets to cool the water Aerator caps for air return What It Does This reducer adapter is part of Pentair's specialty fittings range, designed to transition between differing pipe sizes within a pool plumbing assembly. Specialty fittings in this line are designed for ease of installation. Confirm the part number on your existing fitting before ordering — the Dark Gray color designation is specific to this listing. Specifications Pentair Part Number 86204215 Connection Size 1-1/2" O.D. x 1" Slip Color Dark Gray Quantity Included Each Pro Tip Before ordering, verify the O.D. and slip size against the fitting currently installed in your plumbing run. Reducer adapters are size- and color-specific — the Dark Gray version (86204215) is not interchangeable with fittings of the same dimensions in other colors. Match the part number molded or stamped on your existing fitting to confirm you have the correct replacement.