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The WESTLAKE PIPE FITTINGS dwv-d800-040 is a 4-inch by 4-inch DWV PVC closet flange designed for non-pressurized drain, waste, and vent applications. It features a hub end connection and is manufactured from PVC rated to a maximum temperature of 140 degrees F. This fitting is used to anchor and seal a toilet to the drain pipe at the floor level, creating the critical connection between the toilet horn and the drain line. Licensed plumbers install this fitting as part of residential and light commercial sanitary drain systems.
This closet flange is suited for DWV piping systems where non-pressurized drainage is required. The hub end design accepts standard 4-inch PVC pipe, making it compatible with typical residential toilet rough-in configurations. It meets ASTM D 3311, ASTM 1866, and ASTM 1784 standards and carries NSF 14 certification, confirming it meets material and performance requirements for potable water and drain system components. Plumbers working on new construction or remodel projects will find this flange appropriate for standard floor-mounted toilet installations.
Designed as an OEM-style replacement or new-installation closet flange for standard 4-inch PVC DWV drain systems in residential and light commercial plumbing applications.
Installation must be performed by a licensed plumber in accordance with local plumbing codes and the International Plumbing Code (IPC). Shut off the water supply and evacuate the drain line before beginning work. Solvent-cement the hub end to the drain pipe per ASTM D 2564 procedures and allow full cure time before setting the toilet. Do not use this fitting in pressurized piping systems.
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