Compression coupling (mufa) Detal-met PP GW 40 x 1" for pipe connections

Detal-met PP GW 40 x 1" compression coupling is a polypropylene fitting designed to connect a 40 mm outer diameter pipe to a 1" female or male threaded component. The coupling creates a sealed transition between plastic pipework and threaded fittings using a mechanical compression system, making it suitable for plumbing and heating installations that require a reliable junction between smooth-wall pipe and threaded valves or fixtures. The design supports potable water systems and general-purpose pipework where a secure, leak-resistant connection is needed.

Advantages

The polypropylene construction provides chemical resistance and corrosion-free performance over time, while the compression mechanism allows installation without special tools or fusion processes. The coupling offers a compact footprint and straightforward assembly, reducing installation time for repairs, extensions or retrofits. Its compatibility with standard 40 mm pipes and 1" threaded fittings delivers a versatile solution for mixed-material systems.

Suitable for

• Joining 40 mm polypropylene or similar smooth-wall pipes to 1" threaded valves and fixtures
• Inline repairs of damaged pipe sections
• Extending pipe runs where a threaded transition is required
• Connections in potable water and general domestic plumbing systems

Key specifications

• Material: polypropylene (PP)
• Pipe outer diameter compatibility: 40 mm
• Thread connection size: 1" (inch)
• Connection type: compression to threaded transition
• Application: potable water and general-purpose plumbing

How to use

Ensure pipe ends are cut square, clean and free of burrs before assembly. Slide the compression nut and sealing components onto the pipe as required, insert the pipe fully into the coupling body until it seats, then hand-tighten the compression nut and finish to the manufacturer's recommended torque to form a watertight seal. For the threaded side, apply appropriate thread sealant or tape to the mating threads, then engage and tighten the threaded component to the coupling. Follow standard plumbing practice and local codes when making connections.

Usage recommendations

Use the coupling within the pressure and temperature limits appropriate for polypropylene fittings and verify compatibility with the transported media. For long-term reliability, avoid excessive bending or axial loads at the joint, and inspect connections after initial pressurization. If used in heating systems, confirm material suitability for system temperatures and consider additional mechanical support where necessary.