Press connector PEX / EXTERNAL THREAD (25x1")

Product detailed description

Large-diameter PEX piping is commonly used in central heating and domestic hot and cold water systems where high flow rates are required. This includes main supply lines to manifolds, boiler inlets and outlets, and vertical risers serving multiple outlets. In such applications, maintaining consistent internal diameter is essential to avoid pressure loss and ensure efficient system performance. The PEX compression fitting with external thread is specifically designed for these critical junctions, where a 25mm PEX-AL-PEX pipe must be connected to a full 1 inch external thread without reducing the flow cross-section. The fitting is suitable for both residential and commercial installations, including multi-family buildings and industrial facilities with complex piping layouts.

When working with this type of fitting, installers must ensure that the pipe is correctly prepared and that the compression process is carried out with the appropriate tools. The U-profile jaws provide a secure grip on the pipe wall, ensuring a leak-free connection. The fitting is intended for use in pressurised systems and is suitable for both hot and cold water applications. It is not recommended for use in systems with aggressive media or where frequent disassembly is required.

Technical parameters

Brand	Hydroland
Type	PEX Compression Connector, Transition to External Thread
Pipe Diameter	25 mm
Thread Size	1 inch external
Connection Method	Compression, U-profile jaws
Material	Tinned brass
Warranty	10 years
EAN	5900308750223
Code	PEX-Z.Z.GZ25X1

The technical parameters of this fitting are essential for correct system design and component selection. The 25mm PEX-AL-PEX pipe diameter ensures a high flow capacity, while the 1 inch external thread allows for standard plumbing connections. The U-profile jaws ensure a secure and durable connection, and the tinned brass construction provides resistance to corrosion. The 10-year warranty reflects the durability and reliability of the fitting in long-term service.

Installation and connection

Installation of the PEX compression fitting with external thread requires a standard PEX compression tool compatible with U-profile jaws. The procedure involves cutting the PEX-AL-PEX pipe to the correct length, deburring the cut end, and inserting it into the fitting until it reaches the stop. The jaws are then compressed using the tool, ensuring a secure and watertight connection. The external 1 inch thread is a standard BSP thread and must be sealed using PTFE tape or an O-ring, depending on the system requirements.

Key installation checks include verifying the correct pipe diameter, ensuring the jaws are fully compressed, and confirming that the thread is properly sealed. Common installation mistakes include using the wrong tool for compression, which can result in an incomplete or uneven compression, and failing to apply sufficient sealing material to the thread. These errors can lead to leaks or premature failure of the connection.

Compatibility and accessories

This fitting is compatible with all standard 25mm PEX-AL-PEX pipes and can be connected to any system using 1 inch BSP external thread. It is suitable for use with manifolds, boilers, and other components that require a full-flow connection. When installing, it is important to ensure that the pipe is correctly sized and that the system pressure and temperature are within the operating limits of the fitting. No additional accessories are required for installation, but standard sealing materials such as PTFE tape or O-rings may be used depending on the application.

Technical background for designers

The PEX compression fitting operates by compressing the U-profile jaws around the outer wall of the PEX-AL-PEX pipe. This creates a mechanical bond that prevents leakage and ensures a secure connection. The fitting is designed to maintain the internal diameter of the pipe, ensuring that flow resistance is minimised and system efficiency is maximised.

The integration of this fitting into a system depends on the overall design and the requirements of the application. It is particularly useful in main supply lines where high flow rates are required and where a reduction in diameter could lead to pressure loss. The service life of the fitting is influenced by factors such as system pressure, temperature, and the quality of the installation. Proper installation and regular inspection can help to ensure long-term performance and reliability.

Service and operation

Once installed, the PEX compression fitting requires minimal maintenance. It is designed for long-term use and does not require regular servicing. However, it is recommended to inspect the connection periodically for signs of wear or leakage. If any issues are detected, the fitting should be replaced immediately to prevent further damage to the system. The 10-year warranty provides assurance of the fitting's durability and reliability in service.

Frequently asked questions

Can this fitting be used with PEX-AL-PEX pipe in a hot water system?
Yes, the fitting is suitable for use in both hot and cold water systems. The tinned brass construction and U-profile jaws ensure a secure and durable connection that can withstand the operating conditions of a hot water system.

Is it compatible with standard PEX compression tools?
Yes, the fitting is designed to be used with standard PEX compression tools that are compatible with U-profile jaws. It is important to use the correct tool to ensure a proper and secure connection.

Can it be used in systems with high pressure?
Yes, the fitting is suitable for use in pressurised systems. The tinned brass construction and secure compression ensure that the fitting can withstand the operating pressures of a typical plumbing or heating system.

Is it possible to reuse the fitting after disassembly?
No, the fitting is not designed for reuse after disassembly. The compression process is intended to be a one-time installation, and reusing the fitting may result in a weak or unreliable connection.