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The WESTLAKE PIPE FITTINGS dwv-d300-040 is a 4-inch, 90-degree DWV elbow fitting made from Schedule 40 PVC. It creates a quarter-bend turn in drain, waste, and vent piping systems. The hub-by-hub end configuration accepts solvent-cemented pipe connections on both ends. Plumbers and pipefitters install this fitting in residential and light commercial DWV systems where a 90-degree directional change is needed in a 4-inch pipeline. Its Schedule 40 wall thickness meets standard load requirements for typical DWV service.
This fitting is used in drain, waste, and vent applications where code-compliant PVC piping is required. The 4-inch nominal pipe size makes it suitable for main drain lines, closet flanges, and horizontal-to-vertical transitions in residential and commercial plumbing systems. It is not rated for pressure service and is intended strictly for gravity-flow DWV installations.
Designed as an OEM-style replacement or new-installation fitting compatible with 4-inch Schedule 40 PVC DWV piping systems in residential and commercial plumbing applications.
Installation is performed by licensed plumbers in accordance with applicable IPC or local plumbing code requirements. Shut off water supply and confirm the line is drained before cutting into existing piping. Use PVC primer and solvent cement rated for DWV applications, and allow full cure time before restoring flow. Do not use this fitting in pressurized water supply lines.
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