Facing arc 15° - N - 35mm IVAR.IVN75

Product detailed description

The IVN75.35 stainless steel press elbow is commonly used in professional heating, plumbing, and industrial installations. This component allows for directional changes in piping systems while maintaining system integrity under thermal and hydraulic stress. It is suitable for use in closed-loop systems such as underfloor heating, solar thermal circuits, and fire suppression systems. Installers and technicians working in commercial and residential buildings will find this elbow essential for creating accurate and durable piping layouts.

Its design supports press-fit installation, ensuring secure and leak-free connections when properly compressed. The elbow must be used with compatible press tools and fittings to achieve optimal performance. The stainless steel construction provides resistance to corrosion and makes it ideal for environments with aggressive media or high temperatures.

Technical parameters

Material	Stainless steel grade Wst. Nr. 1.4404 (AISI 316L)
Operating temperature	-20 °C
Nominal pressure	PN 16
Code	IVN75.35
Brand	IVAR

The elbow is rated for a nominal pressure of PN16 and can operate continuously between -20°C and +85°C, with a maximum temperature limit of +120°C. These parameters are critical for ensuring correct sizing and system compatibility. The material grade (1.4404/AISI 316L) ensures long-term durability in corrosive environments.

Installation and connection

The IVN75.35 is installed using a press-fit method. The elbow must be fully seated in the pipe before applying the press tool. A compression mark or indicator should be used to confirm that the fitting is compressed to the correct dimension (54 mm). The connection size is 35 mm nominal, and it requires a press tool calibrated for this specific size. Key installation checks include verifying the alignment of the elbow and pipe, ensuring the press tool is correctly positioned, and confirming the compression depth. Common mistakes include over-pressing, which can damage the fitting, and under-pressing, which leads to leaks. Always inspect the joint visually after installation for signs of misalignment or incomplete compression.

Compatibility and accessories

This elbow is compatible with other components in the IVAR IVN70, IVN73, IVN74, and IVN75 series. It is intended for use with stainless steel pipes of the same material grade and nominal diameter. To complete the system, installers may need to order additional press fittings such as straight couplings, tees, or end caps. Ensure all components are from the same manufacturer to maintain system integrity and avoid incompatibility issues.

Technical background for designers

The elbow functions by redirecting the flow of fluids or gases in a piping system. The 15° bend allows for gradual directional changes, reducing turbulence and pressure loss compared to sharper bends. The use of 1.4404 stainless steel ensures resistance to corrosion and thermal expansion, making it suitable for long-term operation in fluctuating temperature conditions. The press-fit connection eliminates the need for welding, reducing installation time and risk of contamination. System designers should consider the elbow’s nominal pressure and temperature limits when planning for load-bearing and thermal cycling scenarios.

Service and operation

The IVN75.35 requires minimal maintenance due to its durable stainless steel construction. Regular visual inspections should be carried out to check for signs of wear, corrosion, or leakage at the press joints. If a leak is detected, the affected section must be removed and replaced with a new fitting. There are no scheduled service intervals specified for this component. Longevity is ensured through proper installation and adherence to operating limits.

Frequently asked questions

Can the IVN75.35 be used with copper pipes?
No, this elbow is specifically designed for stainless steel press systems and is not compatible with copper piping.

Is a specific press tool required for this elbow?
Yes, a press tool calibrated for 35 mm stainless steel fittings must be used to ensure correct compression and sealing.

What is the maximum allowable temperature during operation?
The elbow can operate up to +120°C, but continuous operation should not exceed +85°C to ensure long-term reliability.

Can this elbow be used in solar thermal systems?
Yes, it is suitable for solar thermal applications due to its resistance to thermal cycling and compatibility with closed-loop systems.