Compression coupling REHAU 17/17 RAUTHERM — straight equal-through plumbing connector

Compression coupling REHAU 17/17 RAUTHERM — straight equal-through plumbing connector is a compact mechanical fitting for joining two 17 mm pipes in-line. Designed for RAUTHERM systems and compatible PEX or plastic pipes, this straight equal-through connector is intended for water supply and central heating circuits where a secure, low-profile joint is required. The coupling maintains hydraulic continuity while providing a stable, leak-resistant connection suitable for concealed and exposed installations.

Advantages

This compression coupling offers a straightforward push-fit-style assembly with a compression seal that ensures reliable performance under typical domestic and light-commercial pressure conditions. The design minimizes the need for soldering or adhesive bonding and reduces installation time. Its compact straight-through form factor preserves flow characteristics and occupies minimal space in pipe runs or manifolds.

Suitable for

• Connecting two 17 mm PEX or plastic pipes in water supply systems
• Inline joints in domestic central heating circuits
• Repairs or replacements of short pipe sections where a compact mechanical connector is preferred
• Concealed installations behind walls or within service cabinets

Key specifications

• Pipe diameter compatibility: 17 mm
• Type of connection: straight equal-through compression coupling
• Material compatibility: RAUTHERM systems and similar PEX / plastic pipes
• Application: potable water supply and central heating circuits
• Installation orientation: inline, suitable for concealed or exposed mounting

How to use

Prepare pipe ends by cutting squarely and removing burrs to ensure proper sealing. Slide the compression components onto the pipe as required, insert the pipe fully into the coupling body until it seats, and tighten the compression nut or follow the manufacturer’s specified assembly method to form the seal. Verify alignment and ensure the joint is secure before restoring system pressure. After installation, perform a pressure test according to applicable standards to confirm leak-free performance.

Usage recommendations

Use with pipes that match the specified 17 mm diameter and materials compatible with RAUTHERM systems. Avoid over-tightening compression nuts; follow recommended torque values if provided by the system manufacturer. Inspect joints after initial pressurization and after the first heating cycle in central heating systems.