NIBCO 429040 Parts for 4' Slip Coupling (PVC Schedule 40) Key benefits Direct OEM replacement: Manufactured to match NIBCO model 429040 so you get a proper fit and consistent performance when replacing a damaged or worn coupling. Restores system integrity quickly: Replaces a failed coupling without requiring reconfiguration of existing pipe runs, minimizing downtime. Simple compatibility: Designed for use with 4inch Schedule 40 PVC pipe for straightforward or installations. What this part does Joins two lengths of 4' Schedule 40 PVC pipe using a slipfit connection. Intended as a part to restore or an existing NIBCO 429040 coupling in compatible systems. Key attributes Brand and model: NIBCO, model 429040 Type: Slip coupling ( part) Size: 4 inch (for Schedule 40 PVC pipe) Material: PVC, Schedule 40 compatibility Functionality: Connects/slips over pipe ends to create a continuous run of 4' PVC Why customers need it Maintain planned flow paths and structural integrity in largediameter PVC piping systems without replacing long pipe sections. Keeps inventory simple by providing the exact OEM component for repairs and maintenance. Reduces labor and material cost by enabling a targeted . Recommended applications / use cases Repairing a damaged joint in a 4' Schedule 40 PVC drainage or sewer line where the original NIBCO 429040 coupling is specified. Restoring a broken or leaking connection in irrigation mains and other largediameter PVC water conveyance systems that use 4' Schedule 40 pipe. Replacing worn coupling components in commercial or residential plumbing builds that use NIBCO fittings and require OEMmatching parts. Installation notes Designed for slipfit installation with 4' Schedule 40 PVC pipe. Follow pipe manufacturer and NIBCO installation recommendations for surface preparation and adhesive or sealing methods. Ensure compatibility with existing system materials and local plumbing codes before installation. this part when you need an exact replacement for the NIBCO 429040 4' slip coupling to restore reliable, samespec performance in Schedule 40 PVC piping systems.