3 inch Proflex Coupling Connects Copper to PVC, Steel, Extra Heavy Cast iron

3 inch PVC to Copper Transition Coupling – Built for Secure, Code-Compliant Pipe Connections

The 3 inch PVC to Copper Transition Coupling is engineered for joining dissimilar piping materials in drainage, waste, and vent (DWV) applications. Designed to deliver a watertight seal and durable mechanical strength, this coupling simplifies retrofits and system upgrades where different piping materials intersect.

Suitable for connecting PVC to copper, cast iron, or steel piping, this flexible coupling offers a high-integrity bond that accommodates slight misalignments and thermal expansion. It’s frequently used in renovations, system conversions, and code-required updates in both residential and commercial plumbing environments.

Contractor-Approved Advantages

Specified for reliability and installation efficiency, this coupling offers key advantages on site:

• ✅ Cross-Material Compatibility Transition between PVC and copper without custom adapters or fabrication.
• ✅ Leak-Proof Sealing Features stainless steel clamps and a flexible elastomeric body for high-performance sealing under load.
• ✅ Minimal Downtime Enables rapid installation without heat, flame, or solvent curing.
• ✅ Mechanical Reliability Resists distortion, vibration, and corrosion in concealed or exposed configurations.
• ✅ Field Proven Used by contractors across retrofit, new construction, and repair applications with long-term reliability.

Technical Specifications

• Nominal Size: 3 inches
• Connection Type: PVC (solvent hub or spigot) to Copper (Type DWV or L/M)
• Material: Neoprene or EPDM body with 300-series stainless steel band clamps
• Standard Compliance: Meets ASTM C1173 and CSA B602; UPC-listed

Installation Guidance

Ensure both pipe ends are clean and cut square. Position the coupling over the joint and torque the stainless steel clamps to manufacturer specifications using a torque wrench. Suitable for above-grade DWV transitions; verify with local code for pressure applications or buried installations.

Application Scenarios

Commonly installed during remodels, system repairs, and pipe reroutes, this transition coupling enables reliable performance when legacy copper or cast iron systems interface with new PVC infrastructure. Provides a code-approved method to connect dissimilar pipes while maintaining accessibility and flow characteristics.

Field Insight

Transition couplings are essential tools in systems that combine materials, allowing for simplified alignment and rework in occupied spaces. Their flexibility and seal integrity help reduce material stress and support long-term watertight operation under variable load conditions.

For contractors working across modern and legacy building systems, the 3 inch PVC to Copper Transition Coupling provides the performance, adaptability, and code compliance required in professional-grade installations.