PEX/INTERNAL THREAD Crimp Coupling (25x1")

Product detailed description

This PEX crimp coupling is commonly used in residential and commercial plumbing and heating systems to connect PEX tubing to threaded fittings. It is suitable for applications such as underfloor heating, domestic hot and cold water distribution, and central heating circuits. The coupling ensures a secure and leak-free connection by compressing the PEX tube against the fitting using a U-profile jaw crimping method. It is typically installed by professionals such as plumbers, heating engineers, and service technicians who require reliable and durable connections in closed-loop systems.

As a key component in PEX-based systems, this coupling is used in conjunction with crimping tools to create a permanent mechanical bond between the tubing and the fitting. The nickel-plated brass construction provides resistance to corrosion and ensures compatibility with a wide range of fluids and system conditions. It is particularly useful in systems where internal thread connections are required for integration with valves, radiators, or other threaded components.

Technical parameters

Installation and connection

Installation requires a PEX crimping tool compatible with U-profile jaws. The coupling is first placed over the PEX tube, which is then cut to length and deburred. The internal thread allows for connection to standard threaded fittings. It is important to ensure the tube is fully inserted into the coupling before crimping and that the crimping tool is correctly aligned to avoid misalignment or incomplete compression. Common installation errors include using the wrong tool profile, insufficient crimping pressure, or incorrect tube insertion depth, which can lead to leaks or connection failure.

Compatibility and accessories

This coupling is compatible with PEX tubing of the appropriate size and is intended for use with U-profile jaw crimping tools. For a complete installation, additional components such as PEX tubing, valves, and threaded fittings may be required. It is recommended to use only manufacturer-approved tools and materials to ensure a reliable connection and maintain the warranty.

Technical background for designers

The coupling operates by compressing the PEX tube against the internal thread using a U-profile jaw. The nickel-plated brass material offers good mechanical strength and resistance to corrosion, making it suitable for long-term use in closed-loop systems. The crimping method ensures a tight mechanical bond without the need for soldering or gluing. The longevity and efficiency of the connection depend on correct installation, proper tooling, and the quality of the PEX tubing used. The 10-year warranty is based on the expected performance under standard operating conditions.

Service and operation

Once installed, this coupling requires no regular maintenance. However, it is important to periodically inspect the system for leaks or signs of wear, particularly at connection points. If a leak is detected, the affected coupling should be replaced immediately. No scheduled service intervals are required for this component under normal operating conditions.

Frequently asked questions

Can this coupling be used with PEX-AL-PEX tubing?
Yes, provided the tubing is compatible with the internal thread and the U-profile jaw crimping method.

Is this coupling suitable for high-pressure systems?
Yes, the nickel-plated brass construction and crimping method provide sufficient strength for standard pressure applications.

Can the coupling be reused after removal?
No, the crimping process is permanent and the coupling must be replaced if removed or damaged.

What tools are required for installation?
A PEX crimping tool with U-profile jaws is required to compress the coupling onto the PEX tube.