Facing arc 15° - N - 42mm IVAR.IVN75

Product detailed description

Stainless steel facing arcs are essential components in press-fit pipe systems used in commercial and industrial buildings. They are commonly found in heating, ventilation, plumbing, fire suppression and solar thermal installations. These systems often require fittings that can maintain integrity under varying thermal conditions and mechanical stress. The IVAR IVN75.42 is designed for such environments, where precision in fitting and long-term reliability are critical. Installers working on closed-loop systems, such as underfloor heating or hot water circulation, will find this component suitable for creating tight, leak-free bends in stainless steel piping.

This 15° facing arc is part of a modular system that allows for accurate alignment of pipe runs and reduces the need for additional supports or adjustments. It is typically used in conjunction with straight press-fit tubes and other complementary fittings to form complex piping layouts. Its angular design enables smooth directional changes while maintaining hydraulic performance and structural stability. The component is particularly suited for applications where space constraints require compact bends or where the piping must follow a non-linear path through walls or floors.

Technical parameters

Material	Stainless steel grade Wst. Nr. 1.4404 (AISI 316L)
Operating temperature	-20 °C
Nominal pressure	PN 16
Code	IVN75.42
Brand	IVAR

The operating temperature range of -20 °C to +120 °C makes this fitting suitable for both cold and hot water applications, including those involving solar thermal or industrial processes. The nominal pressure rating of PN 16 ensures compatibility with medium-pressure systems. These parameters are essential for proper sizing and selection to ensure the fitting functions safely and effectively within the specified system conditions.

Installation and connection

To install the IVAR IVN75.42, the press-fit system requires the use of a calibrated pressing tool that compresses the fitting onto the prepared tube end. The fitting must be aligned precisely with the tube to avoid misalignment, which could lead to leaks or reduced flow efficiency. The press operation should be carried out according to the manufacturer’s specifications to achieve a secure, watertight seal. Common installation errors include insufficient tool calibration, incorrect positioning of the fitting on the tube, and failure to verify the correct pressing depth using the built-in indicator. After pressing, the installer should inspect the fitting for uniform compression and ensure the indicator reaches the specified dimension of 54 mm.

Compatibility and accessories

This facing arc is compatible with standard stainless steel press-fit tubing systems using the same material grade and press-fit technology. To complete a system, installers may need to order additional fittings such as straight couplings, elbows, tees and end caps. Accessories such as pressing tools and calibration gauges are required for correct installation but are not included with the fitting.

Technical background for designers

The 15° facing arc operates on the principle of mechanical deformation, where the press-fit tool compresses the outer sleeve of the fitting around the tube wall. This creates a rigid joint that resists axial and rotational movement. The use of 1.4404 (AISI 316L) stainless steel ensures high resistance to corrosion, making it suitable for aggressive environments such as those containing chlorides or acidic fluids. The material’s high tensile strength and low thermal expansion coefficient contribute to the joint’s long-term stability. Proper system design must account for thermal expansion, fluid velocity and pressure fluctuations to maximise the component’s service life.

Service and operation

The IVAR IVN75.42 requires minimal maintenance due to the durability of the stainless steel construction and the permanent nature of the press-fit connection. However, periodic visual inspections are recommended to check for signs of mechanical damage or corrosion. Since the fitting does not have moving parts, no scheduled service intervals are required beyond routine checks during system maintenance.

Frequently asked questions

Can the IVAR IVN75.42 be used in solar thermal systems?
Yes, the fitting is suitable for solar thermal applications as it meets the temperature and pressure requirements for such systems.

Is the 15° angle sufficient for tight spaces?
The 15° angle allows for gradual directional changes, making it ideal for installations where space is limited but a smooth flow path is necessary.

What is the role of the pressing indicator?
The indicator ensures the pressing tool applies the correct amount of force. A fully compressed indicator confirms a successful connection.

How is the fitting aligned during installation?
Proper alignment is achieved by ensuring the tube is inserted fully into the fitting before pressing. Misalignment can lead to uneven compression and potential leakage.