3/4 inch CPVC Union Plastic x Copper

Dependable Connections with the 3/4 Inch CPVC Union – Plastic x Copper Transition

The 3/4 inch CPVC Union Plastic x Copper is engineered for professional-grade installations that require a secure, corrosion-resistant transition between CPVC and copper piping. This union fitting provides a removable joint, making future disassembly or maintenance straightforward without compromising performance.

Professional Advantages

• ✅ Dual-Material Interface Combines CPVC for chemical resistance and copper for strength, ideal for mixed piping systems.
• ✅ Union Design Allows easy future servicing without needing to cut the pipe, reducing downtime during maintenance or retrofits.
• ✅ Corrosion Resistance Suitable for both hot and cold water systems where galvanic corrosion between dissimilar metals is a concern.
• ✅ Reliable Sealing Features a gasketed connection and threaded nut, providing a leak-tight seal when properly torqued.
• ✅ Code-Compliant Meets ASTM D2846 for CPVC and complies with NSF 61 for potable water use.

Technical Specifications

• Size: 3/4 inch nominal
• Connection Type: CPVC socket x sweat copper
• Material: CPVC body with copper alloy end connection
• Max Working Pressure: Up to 100 psi @ 180°F (for CPVC side)
• Compliance: NSF 61, ASTM D2846, lead-free certified

Installation Guidelines

Install using solvent cement on the CPVC side and sweat soldering for the copper end. Use appropriate pipe prep techniques including cleaning, deburring, and proper curing for the solvent weld. Ensure alignment during union tightening to prevent stress on the joint. For optimal sealing, check gasket integrity and apply consistent torque during nut tightening.

Common Applications

Used in residential and commercial plumbing systems, particularly where CPVC and copper transitions are necessary—such as between water heaters, supply lines, or manifold systems. Suitable for both new construction and retrofits where dissimilar materials are being joined.

Did You Know?

Unions are preferred over couplings when future access or maintenance is anticipated. In systems with mixed materials, this helps avoid full pipe replacement and simplifies sectional repair.

The 3/4 Inch CPVC Union Plastic x Copper provides long-term reliability with the added benefit of serviceability, making it a preferred choice for contractors managing hybrid systems with both copper and thermoplastics.