Mueller Streamline PDWVPLUG4 Pvc Dwv Pipe Plug 4in Npt

Product Description

The MUELLER STREAMLINE PDWVPLUG4 is a 4-inch male NPT PVC plug designed for drain, waste, and vent (DWV) piping systems. It threads into female NPT fittings to cap off open pipe ends during pressure testing, system modifications, or permanent line terminations. Made from PVC, this plug resists corrosion and chemical degradation common in drain and waste service environments. Licensed plumbers and pipefitters install this fitting as part of rough-in and service work on residential and light commercial DWV systems.

This plug is used in DWV applications where a threaded termination or test cap is needed on a 4-inch NPT female outlet. Common scenarios include capping cleanout access points, closing unused branch connections, and isolating sections of drain piping during leak tests. Its NPT male thread profile ensures a secure, leak-resistant seal when properly installed with thread sealant appropriate for PVC pipe.

Key Features

• 4-inch male NPT thread fits standard female NPT fittings in DWV piping
• PVC construction resists corrosion, scale, and common drain waste chemicals
• Suitable for capping cleanouts, branch terminations, and test configurations
• Lightweight design simplifies handling during overhead or confined-space installs

Compatibility

Designed as an OEM-style replacement and general-use fitting for 4-inch female NPT connections in residential and light commercial PVC DWV piping systems.

Installation Notes

Installation is performed by a licensed plumber in accordance with applicable plumbing codes such as the IPC or UPC. Shut off water supply and drain the system before installing or removing the plug. Apply an appropriate thread sealant or PTFE tape rated for PVC to the male threads before engagement. Do not over-torque PVC threaded fittings, as excess force can crack the fitting or the mating female connection.

Technical Specifications

• Material: PVC
• Connection Type: Male NPT
• Size: 4 inches
• Application: DWV (Drain, Waste, Vent)

Standard Information

• Brand: MUELLER STREAMLINE
• Manufacturer Part Number: PDWVPLUG4