1 inch ProPEX EP Coupling

ProPEX EP Coupling 1 inch PEX x 1 inch PEX – High-Performance Expansion Fitting

The Uponor ProPEX EP Coupling is engineered for secure and reliable PEX-to-PEX connections in residential and commercial plumbing systems. Manufactured from engineered polymer (EP), this coupling offers excellent resistance to corrosion, scaling, and chemical degradation, making it ideal for potable water distribution and hydronic applications.

Designed exclusively for use with Uponor’s ProPEX expansion system, this fitting supports a fast installation process while maintaining structural integrity under pressure. When installed with ProPEX rings and expansion tools, it creates a permanent, leak-resistant connection without the need for soldering, glues, or clamps.

Product Advantages

• ✅ Engineered Polymer Material – Lightweight, corrosion-resistant, and rated for direct burial and behind-wall use.
• ✅ Secure Expansion Connection – Eliminates the need for heat or adhesives while providing a permanent mechanical joint.
• ✅ NSF Certified – Complies with NSF 14/61 for potable water applications and meets ASTM F1960 specifications.
• ✅ Temperature & Pressure Rating – Rated for 200°F at 80 psi, 180°F at 100 psi, and 73.4°F at 160 psi (per ASTM standards).

Specifications

• Connection Type: ASTM F1960 Expansion – PEX x PEX
• Pipe Compatibility: 1 inch PEX Tubing
• Material: Engineered Polymer (EP)
• System: ProPEX
• Standards: ASTM F877, F1960; NSF 14, 61, 372; CSA B137.5

Common Applications

This coupling is used for joining 1 inch PEX tubing in hot and cold potable water systems, residential fire sprinklers, and closed-loop hydronic heating systems. It is suitable for both slab and wall installations and performs reliably in high-demand environments.

Industry Insight

ProPEX expansion fittings allow for natural system compensation during thermal expansion and contraction, reducing long-term stress on fittings and joints—making them a preferred solution for long-loop and multi-branch installations.

The Uponor ProPEX EP Coupling is a dependable fitting for high-efficiency plumbing systems. Its durable construction and code-compliant design make it a trusted choice among professionals requiring high performance, speed of installation, and long-term reliability.