Grommet - female threaded - N - 28mm-Rp3/4" IVAR.IVN80

Product detailed description

Female threaded grommets are essential components in press-fit piping systems, enabling secure connections between stainless steel pipes and threaded fittings. These fittings are commonly used in residential and commercial buildings for central heating systems, hot water distribution, and industrial process lines. Installers working on such systems often encounter the need to connect press-fitted stainless steel pipe to threaded components such as valves, meters, or manifolds. This requires a reliable transition fitting that maintains system integrity under varying thermal and hydraulic conditions.

The IVAR IVN80.2834 is specifically engineered for these applications. Its design ensures compatibility with standard press-fit tools and provides a durable connection that resists corrosion and leakage. The fitting is suitable for use in closed-loop systems, including solar thermal circuits and fire suppression systems, where long-term reliability is critical. Proper installation involves precise pressing and alignment to ensure the O-ring forms a tight seal and the internal thread remains undamaged.

Technical parameters

Material	Stainless steel grade Wst. Nr. 1.4404 (AISI 316L), EPDM O-ring
Operating temperature	-20 °C
Nominal pressure	PN 16
Code	IVN80.2834
Brand	IVAR

The nominal pressure rating of PN 16 indicates the fitting can withstand up to 16 bar of pressure at reference temperatures. The operating temperature range from -20°C to +85°C (with a maximum of +120°C) allows for use in both cold and hot water systems. These parameters are crucial for determining suitability in specific applications and ensuring the fitting will not degrade or fail under expected operating conditions.

Installation and connection

To install the IVAR IVN80.2834, the stainless steel pipe must be prepared by cutting to the correct length and deburring the end. The pipe is then inserted into the fitting until the stop mark is reached. A press tool is applied to compress the fitting around the pipe, forming a permanent mechanical bond. The internal thread is designed for Rp3/4" connections, which require a matching external thread on the mating component. Before tightening, the installer should verify that the O-ring is seated correctly and that the pipe is fully inserted to the stop mark. Common installation errors include over-pressing, misalignment, and failure to check the seating of the EPDM seal.

Compatibility and accessories

This grommet is compatible with standard stainless steel press-fit systems using 1.4404 material. It is intended for use with Rp3/4" threaded components such as valves, flow meters, or expansion vessels. When ordering, ensure that the mating components have the correct thread type and size. No additional accessories are required for installation beyond the press tool and the specified pipe size.

Technical background for designers

The operating principle of the IVAR IVN80.2834 relies on the mechanical deformation of the stainless steel fitting around the pipe during pressing, creating a leak-tight joint. The 1.4404 stainless steel offers high corrosion resistance, particularly in environments containing chlorides or other aggressive substances. The EPDM O-ring provides a flexible seal that compensates for minor misalignments and thermal expansion. When integrated into a system, the fitting must be selected based on the system's pressure and temperature requirements. Long-term performance depends on the quality of the pressing operation and the absence of mechanical stress on the joint.

Service and operation

Once installed, the fitting requires no regular maintenance. However, periodic visual inspections are recommended to check for signs of corrosion, mechanical damage, or leakage. If any issues are detected, the affected section should be isolated and the fitting replaced. There are no defined service intervals provided for this component.

Frequently asked questions

Can the IVAR IVN80.2834 be used in solar thermal systems?
Yes, the fitting is suitable for solar thermal applications within its specified temperature and pressure limits.

Is the EPDM O-ring resistant to hot water?
Yes, the EPDM material is appropriate for use in hot water systems up to +85°C and short-term exposure to +120°C.

What press tool is required for installation?
A standard press tool compatible with 1.4404 stainless steel press fittings is required to form the joint securely.

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