Compression fitting WAVIN 4064270 for PEXa pipe 25 x 3/4" (25x3/4) with male thread M5

WAVIN 4064270 is a compression fitting intended for use with PEXa (TIGRIS) pipes that have a 25 mm outer diameter and a 3 mm wall thickness (25 x 3/4"). The connector features a male M5 thread and provides a mechanical, push-fit style compression connection between PEXa pipe and threaded components in plumbing and heating installations. It is designed for use where a secure transition between flexible PEX piping and threaded valves, manifolds or adapters is required.

Advantages

The fitting provides a compact, low-profile solution for joining 25 x 3 mm PEXa pipe to threaded plumbing parts, minimizing the need for soldering or adhesive bonding. Its compression mechanism enables tool-assisted, repeatable connections and supports quick installation and maintenance. The design reduces the risk of leaks when installed according to manufacturer recommendations and is compatible with common plumbing and underfloor heating system components.

Suitable for

• Water supply lines using 25 x 3 mm PEXa (TIGRIS) piping
• Connections to manifolds and valves in underfloor heating systems
• Repair or extension of existing PEXa piping runs
• Transition fittings between flexible PEX pipe and threaded fixtures or adapters

Key specifications

• Pipe compatibility: PEXa (TIGRIS) with 25 mm outer diameter and 3 mm wall thickness
• Connection type: compression fitting for PEX pipe
• Thread: external male thread sized M5 for connection to threaded components
• Material and surface: manufacturer-standard corrosion-resistant materials suitable for potable water and heating applications
• Application temperature: suitable for typical domestic hot and cold water and underfloor heating ranges (follow system design limits)

How to use

Prepare the PEXa pipe by cutting the end square and deburring the inner and outer edges. Slide the compression nut and any ferrule or sleeve provided onto the pipe, insert the pipe fully into the fitting body until it seats, then tighten the compression nut to engage the seal according to the manufacturer's torque guidance. Thread the male M5 end into the receiving female thread of the valve, manifold or adapter and secure to the specified tightness. Verify alignment and perform a pressure test of the system after installation to confirm leak-free joints.

Usage recommendations

Use with compatible PEXa (TIGRIS) pipe of the specified dimensions and follow the installation torque and pressure testing procedures. Avoid using the fitting beyond recommended temperature and pressure limits for the piping system. For long-term reliability, inspect joints after initial heating cycles and during scheduled maintenance.