Westlake Pipe Fittings dwv-d101-040 Dwv Female Adapter 4 in

Product Description

The WESTLAKE PIPE FITTINGS dwv-d101-040 is a 4-inch PVC DWV female adapter designed to connect hub-end pipe to female NPT-threaded fittings or fixtures in drain, waste, and vent systems. Built to Schedule 40 standards, this adapter provides a reliable mechanical transition between solvent-weld hub connections and threaded female ports. The fitting is manufactured from PVC, making it resistant to common drain-line chemicals and compatible with standard solvent cement joining methods. Licensed plumbers and pipefitters typically install this type of fitting during rough-in work on residential and light commercial DWV systems.

This adapter is suited for 4-inch nominal pipe size DWV installations where a hub-to-FNPT transition is required. Common applications include connecting PVC drain pipe to threaded cleanout plugs, threaded trap adapters, or threaded fixture drains. The 4-inch size is a standard diameter for main drain runs, building drains, and stack bases in both residential and commercial plumbing systems. It is not rated for pressure service and should be used exclusively in gravity-flow drain, waste, and vent applications.

Key Features

• 4-inch nominal pipe size suits main drain runs and stack connections
• Hub x FNPT end configuration enables solvent-weld-to-threaded transitions
• Schedule 40 wall thickness meets standard DWV system requirements
• PVC construction resists corrosion and common drain-line chemicals
• DWV-rated for gravity-flow drain, waste, and vent service only

Compatibility

Designed as an OEM-style replacement or new-installation fitting for 4-inch Schedule 40 PVC DWV piping systems using hub and female NPT connections.

Installation Notes

Installation should be performed by a licensed plumber in accordance with the International Plumbing Code or applicable local codes. Solvent-cement the hub end to the pipe using PVC primer and PVC DWV cement per manufacturer instructions, and apply thread sealant or PTFE tape to the FNPT connection before assembly. Do not use this fitting in pressurized water supply lines. Ensure the system is drained and isolated before making any connections or modifications.

Technical Specifications

• Nominal Pipe Size: 4 inches
• End Connections: Hub x FNPT
• Schedule: 40/STD
• Material: PVC
• DWV Rated: Yes
• UNSPSC Code: 40171708

Standard Information

• Brand: WESTLAKE PIPE FITTINGS
• Manufacturer Part Number: dwv-d101-040