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The MUELLER STREAMLINE PDWV4804-3IN is a 3-inch PVC DWV adapter fitting designed to transition between a hub (socket) connection and a male NPT threaded connection in drain, waste, and vent piping systems. This fitting allows installers to connect smooth-end PVC pipe into a solvent-weld hub on one end while threading into a female NPT fitting on the other. Plumbers and pipefitters use this adapter when transitioning between solvent-weld PVC runs and threaded pipe connections in residential and light commercial DWV applications.
This adapter is suited for above-ground drain, waste, and vent installations in residential new construction, remodeling, and repair work. Typical install scenarios include connecting PVC DWV branch lines to threaded cleanout plugs, threaded trap adapters, or other NPT-threaded fittings within a gravity-drain piping system. The 3-inch size is commonly found in main drain lines, closet flanges, and horizontal waste runs.
Designed as an OEM-style replacement and standard-use fitting for 3-inch PVC DWV piping systems using hub and male NPT connections in residential and light commercial plumbing applications.
Installation should be performed by a licensed plumber in accordance with applicable local plumbing codes and the International Plumbing Code (IPC). Shut off the water supply and ensure the drain system is depressurized before beginning work. Apply the appropriate PVC primer and solvent cement to the hub end per manufacturer instructions, and use thread sealant tape or compound on the male NPT threads before making up the threaded joint. Do not over-torque the threaded connection, as PVC threads can crack under excessive force.
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