Westlake Pipe Fittings dwv-d321-040 45 Deg Dwv Pvc Elbow 4 in

Product Description

The WESTLAKE PIPE FITTINGS dwv-d321-040 is a 45-degree DWV elbow fitting designed for drain, waste, and vent piping systems. Manufactured from PVC and conforming to Schedule 40/STD wall dimensions, this hub-end elbow is built for non-pressurized gravity-drainage applications. The 45-degree sweep provides a gentler directional change than a 90-degree fitting, reducing flow restriction and the risk of blockage in drain lines. Licensed plumbers and pipefitters install this type of fitting in residential and light commercial DWV systems where code-compliant transitions in run direction are required.

This fitting is suited for 4-inch nominal pipe size DWV installations in residential and commercial plumbing systems. Typical applications include floor drain tie-ins, horizontal branch connections, and vertical stack offsets where a gradual 45-degree change in direction is needed. The hub configuration accepts standard Schedule 40 PVC pipe with solvent-cement joining, making it compatible with conventional PVC DWV rough-in work. Its non-pressurized design means it is intended strictly for drainage and venting service, not for pressure piping or potable water supply lines.

Key Features

• 45-degree sweep angle for smooth directional transitions in drain and vent lines
• Hub (socket) end connections sized for 4-inch nominal Schedule 40 PVC pipe
• Schedule 40/STD wall thickness for standard DWV service
• PVC construction resistant to common drain-line chemicals and corrosion
• Non-pressurized DWV service rating suitable for gravity drainage applications

Compatibility

Designed as an OEM-style DWV replacement and new-installation fitting for 4-inch nominal Schedule 40 PVC drain, waste, and vent piping systems.

Installation Notes

Installation is performed by a licensed plumber in accordance with the International Plumbing Code (IPC) or applicable local code. Shut off water supply and ensure the drain system is depressurized and empty before cutting into an existing line. Clean and deburr pipe ends, apply approved PVC primer, and follow with solvent cement rated for PVC DWV service. This fitting is not rated for pressurized water supply or outdoor UV-exposed applications without additional protection.

Technical Specifications

• Nominal Pipe Size: 4 inches
• Schedule: 40/STD
• Fitting Angle: 45 degrees
• Connection Type: Hub (socket)
• Material: PVC
• Service Type: DWV (Drain, Waste, Vent) non-pressurized
• UNSPSC Code: 40172808

Standard Information

• Brand: WESTLAKE PIPE FITTINGS
• Manufacturer Part Number: dwv-d321-040