PRESS Wall - end wall, 20 x 3/4" F

Product detailed description

This press end wall fitting is commonly used in residential and commercial buildings to terminate ALPEX piping in heating and hot water systems. It ensures a secure and leak-free seal at the end of a pipe run during installation. Installers typically use it in conjunction with press tools and matching accessories to complete pipe circuits in underfloor heating, domestic hot water supply, and central heating systems. The fitting is designed for use in systems where thermal expansion and contraction are expected due to fluctuating temperatures.

The fitting is sized to accommodate standard pipe diameters and is suitable for applications where a robust, corrosion-resistant connection is required. It is particularly useful in tight spaces or where pipe access is limited, as it allows for a compact termination point. The nickel-plated brass construction provides long-term resistance to corrosion and mechanical wear, making it suitable for both dry and wet environments.

Technical parameters

Installation and connection

Installation requires the use of a certified press tool compatible with ALPEX press systems. The fitting is connected to the pipe by inserting the prepared ALPEX pipe into the fitting’s sleeve and pressing the joint using the correct tooling. The fitting’s female thread (3/4 inch F) allows for connection to other threaded components such as valves, meters or manifolds. Before pressing, ensure the pipe is clean, cut straight, and free of burrs. Check that the fitting is aligned properly with the pipe axis to avoid stress on the joint.

Common installation mistakes include using incorrect pressing force, misalignment of the pipe and fitting, and failure to clean the pipe end before pressing. These can lead to leaks or reduced joint strength. After installation, inspect the pressed joint for even deformation and verify the fit with a go/no-go gauge if available.

Compatibility and accessories

This end wall fitting is designed specifically for ALPEX press systems. It requires the use of a stainless steel sleeve and EPDM sealing ring that are compatible with press tools of type B-F-TH. When ordering, ensure that the required press tools and sleeves are available. Additional components such as valves or adapters may be needed depending on the system layout and connection requirements.

Technical background for designers

The fitting operates by compressing the sleeve around the pipe when pressed, creating a metal-to-metal seal supported by the EPDM gasket. The nickel-plated brass body resists corrosion and maintains structural integrity under thermal cycling. This material choice ensures long-term performance in wet environments and under continuous heat exposure. The fitting integrates into press-based piping systems, reducing the need for soldering or threading. System efficiency depends on correct sizing, proper press force, and alignment of all components to prevent stress concentrations and leakage points.

The service life is influenced by the quality of installation, the frequency of thermal cycles, and the chemical composition of the fluid in the system. For long-term performance, ensure that the system is designed with appropriate expansion compensation and that all joints are properly sealed.

Service and operation

No regular maintenance is required for this fitting once installed correctly. However, periodic visual inspections are recommended to check for signs of corrosion, leakage or mechanical damage. If any issues are detected, the affected joint should be replaced immediately. There are no defined service intervals as the fitting is designed for long-term use without intervention. In case of system shutdown or modification, re-pressing is not possible—any damaged fitting must be replaced with a new one.

Frequently asked questions

Can the fitting be used with copper or PEX pipes?
No, this fitting is specifically designed for use with ALPEX press systems and cannot be used with copper or PEX pipes.

Is the fitting suitable for outdoor installations?
Yes, provided it is installed in a protected location and the system is properly insulated against environmental factors.

Can the fitting be re-pressed after initial installation?
No, once the fitting has been pressed, it cannot be reused or re-pressed. A new fitting must be installed in case of damage or failure.

What tools are required for installation?
A certified press tool compatible with ALPEX press systems and the appropriate sleeves and seals are required for a secure connection.