Longer recoil - N - 22mm IVAR.IVN76

Product detailed description

Expansion fittings are essential components in modern heating, plumbing and sanitary installations. They are commonly used in residential, commercial and industrial buildings to connect pipe segments while accommodating thermal expansion and contraction. This type of fitting ensures leak-free connections in systems such as underfloor heating, domestic hot water circuits and industrial process lines. Proper installation requires attention to alignment, correct compression depth and secure sealing to maintain system integrity.

In systems involving hot water circulation or solar thermal applications, expansion fittings help maintain tight seals despite temperature fluctuations. Their design allows for easy assembly without the need for additional tools beyond a compression ring and a suitable pressing device. Installers must verify that the fitting is fully compressed to the specified depth and that all connections are aligned to prevent stress on the joints.

Technical parameters

Material	Stainless steel grade Wst. Nr. 1.4404 (AISI 316L)
Operating temperature	-20 °C
Nominal pressure	PN 16
Code	IVN76.22
Brand	IVAR

The pressure rating of PN16 indicates the fitting can handle nominal pressures of up to 16 bar at standard operating temperatures. The operating temperature range extends from -20°C to 120°C, making it suitable for both cold and hot water applications. The stainless steel material provides resistance to corrosion and ensures long-term performance in aggressive environments. These parameters are critical for selecting the correct fitting size and type based on system requirements and media conditions.Installation and connection To install this expansion fitting, begin by preparing the pipe ends to ensure they are clean and free from burrs. Insert the pipe into the push-fit end until it reaches the stop mark. For the threaded end, apply a suitable thread sealant and screw it into the corresponding female thread. Ensure the fitting is fully compressed to a depth of 54 mm using a compatible pressing tool. Check that the pipe is straight and that the fitting is not twisted during installation. Common installation errors include insufficient compression depth, misalignment of the pipe and fitting, and failure to apply thread sealant. These issues can lead to leaks or premature failure of the joint. After installation, inspect the fitting visually and perform a pressure test to confirm the integrity of the connection.

Compatibility and accessories

This expansion fitting is designed for use with stainless steel pipes of appropriate diameter. It is compatible with standard pressing tools and requires no additional sealing rings or gaskets. To complete the installation, ensure that the pipe ends are cut cleanly and that the correct pressing tool is available. No specific accessories are required for this fitting, but a suitable tool for measuring compression depth is recommended.

Technical background for designers

The fitting operates by compressing the pipe within the push-fit sleeve to create a tight seal. The stainless steel material offers high resistance to corrosion and thermal expansion, ensuring stable performance over time. When integrated into a system, the fitting maintains its integrity even under fluctuating pressure and temperature conditions. The longevity of the fitting depends on proper installation, correct alignment and the absence of mechanical stress on the joint. Designers should consider the maximum operating temperature and pressure when specifying fittings for a given application.

Service and operation

During operation, the fitting requires minimal maintenance. Periodically inspect the connections for signs of wear, leakage or corrosion. If any issues are detected, isolate the affected section and replace the fitting if necessary. No scheduled service intervals are specified for this component, but regular visual checks are recommended as part of routine system maintenance.

Frequently asked questions

Can this fitting be used with copper pipes?
No, this fitting is specifically designed for stainless steel pipes and may not provide a reliable seal with copper.

Is it suitable for solar thermal systems?
Yes, the operating temperature range supports use in solar thermal systems up to 120°C.

Can it be used in fire suppression systems?
Yes, provided the system operates within the specified pressure and temperature limits.

What pressing tool is required?
A standard pressing tool compatible with stainless steel fittings is required for installation.