Press nipple - reduced, 40 x 26

Product detailed description

Press-reduced couplings are essential components in modern piping systems where cross-connections between different pipe sizes are required. They are commonly used in residential and commercial buildings during the installation of central heating, hot water supply, and underfloor heating circuits. These fittings ensure leak-free connections when joining ALPEX pipes of varying diameters within closed-loop systems. Installers must pay close attention to alignment and pressing force to maintain hydraulic integrity.

In industrial and domestic applications, these fittings are integrated into systems operating under moderate thermal stress. The design allows for efficient transfer of heated fluids while maintaining structural stability. The compact size and robust construction make them suitable for concealed installations behind walls or beneath floors where accessibility is limited after installation.

Technical parameters

Material	Nickel-plated brass CW617N
Operating temperature	+120 °C
Nominal pressure	PN 10
Weight	0.358 kg
Code	510108
Brand	IVAR

The operating temperature limit of +120 °C defines the maximum thermal conditions for which this fitting is rated. The nominal pressure rating of PN 10 determines the hydraulic capacity and helps in selecting appropriate components for the system’s pressure class. The material designation CW617N indicates a specific alloy of nickel-plated brass suitable for corrosion resistance in wet environments.

Installation and connection

To connect the fitting, strip the insulation from the ALPEX pipes according to the manufacturer’s guidelines. Insert the prepared ends into the coupling until they reach the stop point marked inside the fitting. Ensure the pipe is fully seated and aligned axially before applying the pressing tool. Use a pressing die compatible with the B-F-TH jaw type. After pressing, inspect the deformation for symmetry and correct depth. Common installation errors include misalignment, insufficient pressing depth, and using incompatible dies, all of which can lead to leaks or premature failure.

Compatibility and accessories

This coupling is specifically designed for ALPEX pipes and requires a stainless steel clamping ring and EPDM sealing ring for a watertight connection. Additional tools such as a pipe cutter and deburring tool should be available for proper preparation. No alternative products are specified for this application.

Technical background for designers

The press-reduced coupling operates by mechanically deforming the outer wall of the fitting around the pipe. The nickel-plated brass body provides high resistance to corrosion and wear in wet environments. The EPDM seal ensures a tight barrier against fluid leakage. Integration into the system depends on accurate sizing and adherence to pressure and temperature limits. The service life is influenced by the quality of installation, the chemical composition of the transported medium, and the frequency of thermal cycling.

Service and operation

Once installed, the coupling does not require regular maintenance due to the solid mechanical connection. However, during system inspections, check for signs of mechanical damage, corrosion, or leakage. If any anomalies are found, the affected section must be removed and replaced. No scheduled service intervals are defined in the provided data.

Frequently asked questions

Can this fitting be used with copper pipes?
No, this coupling is designed exclusively for ALPEX pipes. Using it with copper will result in improper seating and potential leaks.

What pressing tool is required for this model?
A pressing tool compatible with the B-F-TH jaw type must be used to achieve the correct deformation pattern and secure connection.

Is the stainless steel clamping ring reusable?
No, the clamping ring is a single-use component and must be replaced with each new installation to ensure reliable performance.

How is the nominal pressure PN 10 achieved in this coupling?
The combination of the nickel-plated brass body, stainless steel clamping ring, and EPDM seal ensures the coupling meets the PN 10 pressure requirements under normal operating conditions.