AquaStar HydroAir 4" Retrofit Bulkhead Fitting [1-1/2" MPT] (RE415T101) is a plumbing fitting, valve, union, adapter, or related service part from ProStar by AquaStar for compatible pool, spa, bath, and water system installations. It is intended for repairs or replacements where pipe size, thread type, slip or spigot configuration, valve style, and material compatibility must match the existing plumbing. Use part number RE415T101 when matching this item to an existing component, owner’s manual, parts diagram, or service record. Key identifiers and configuration details include 1-1/2" MPT. Choosing the correct fitting helps maintain dependable water flow and leak-resistant connections.Before installation, compare all connection sizes and orientations. Dry-fit plumbing parts where possible, use approved primers, solvents, sealants, or gaskets for the application, and allow proper cure time before pressurizing the system. Genuine or listed ProStar by AquaStar replacement option for Fittings & Valves: Inlet/Outlet applications Designed for matching by part number, equipment model, and physical configuration Useful for repair, rebuild, routine maintenance, or replacement service Compare size, voltage, color, connection type, and model details before ordering Professional installation is recommended whenever electrical, gas, pressure, or code-sensitive work is involved
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