3 inch x 4 inch Wrot Copper DWV Toilet Flange

4" x 3" Wrot Copper Closet Flange – DWV-Grade for Secure Toilet Installations

The 4" x 3" Wrot Copper Closet Flange is designed for use in DWV (Drain, Waste, and Vent) systems where a durable, solder-joint connection is required between the toilet and the sanitary waste system. Manufactured from wrot copper, this flange offers excellent corrosion resistance and is suitable for soldering to copper DWV tubing in residential and commercial applications.

This flange features a 4" nominal inlet to accept copper drain pipe and a 3" outlet configuration that accommodates standard closet bend assemblies. Its design complies with industry standards for copper DWV fittings, including the use of lead-free materials as defined by federal regulations for potable systems, even though closet flanges typically do not carry drinking water.

Performance Characteristics

• Material: Wrot copper construction for corrosion resistance and longevity in non-pressurized systems.
• Sizing: Inlet accepts 4" copper pipe; 3" hub connection fits DWV copper lines.
• Joint Type: Solder (sweat) joint suitable for copper-to-copper installations.
• Application: Toilet mounting connection to DWV systems; appropriate for floor-mounted closet installations.
• Code Compliance: Manufactured to ANSI/ASME and NSF standards where applicable; lead-free under Safe Drinking Water Act guidelines.

Installation Notes

Installation requires preparation of both the flange and the mating pipe surfaces with flux and proper heating equipment. Soldering should be performed using industry-accepted techniques to ensure a uniform seal. The flange should be secured mechanically to the finished floor with corrosion-resistant fasteners, and the outlet pipe alignment should be verified before soldering to avoid movement during cooling.

Typical Use Cases

This component is standard in copper DWV systems for toilet installations in both new construction and renovation projects. It is most commonly installed in multi-family residential units and light commercial bathrooms where copper DWV is specified.

Material Compliance Note

All wrot copper fittings sold for use in plumbing systems are manufactured without the use of lead-containing alloys, in compliance with U.S. Safe Drinking Water Act amendments and applicable plumbing codes across all jurisdictions.

When durability, code compliance, and secure solder-joint performance are critical, the 4" x 3" Wrot Copper Closet Flange offers the required specifications for professional-grade installations in DWV systems.