The Waterway Vinyl Liner Wall Fitting [1-1/2" Socket Combo Nut] (400-9060B) is designed for pool and spa return, inlet, and outlet applications where the correct face diameter, thread style, and orifice detail matter. This fitting helps direct water back into the vessel while preserving a clean finished look at the wall opening.Use this Waterway Plastics component when replacing a worn eyeball, insert, wall fitting, or related return piece and you need the product dimensions to match the existing plumbing connection. Key identifiers include 1-1/2" Socket Combo Nut. Notable sizing references include 1-1/2. Matching the listed part number is especially important because small differences in face diameter, insider style, or orifice size can affect fit, water direction, and serviceability. It is a practical choice for service technicians, builders, and homeowners who want a direct-fit part for restoring circulation performance without changing the surrounding plumbing layout. For best results, clean the mating surfaces during installation and replace related seals or gaskets whenever they show compression set, hardening, or visible damage. Part number 400-9060B should be used as the primary identifier when cross-checking compatibility. Designed for pool and spa inlet or outlet return applications Helps direct water flow through the proper wall fitting opening Match by face diameter, thread style, orifice, color, and part number Useful for replacing worn eyeball, insert, or wall fitting components Supports clean repairs without unnecessary plumbing changes