Grommet PRESS GAS - with external thread - 28mm-R1" IVAR.IVN81 GAS

Product detailed description

This press fitting is used in gas supply systems for residential and commercial buildings. It is commonly installed in heating systems, gas appliances and industrial gas lines. The fitting provides a secure and leak-tight connection between press pipe and threaded components. It is designed for use with natural gas, biogas and liquid propane gas, ensuring compatibility with a range of gaseous fuels. The fitting is suitable for applications where a reliable connection is required under varying environmental conditions.

Technical parameters

Material	Stainless steel Wst. Nr. 1.4404 (AISI 316L), sealing O-ring HNBR yellow
Operating temperature	-20 °C
Nominal pressure	PN 5
Code	IVNGAS81.2810
Brand	IVAR

The operating temperature range of -20 °C to +70 °C allows installation in both cold and warm environments. The nominal pressure rating of PN 5 ensures suitability for low-pressure gas systems. These parameters are essential for determining the fitting’s compatibility with the system’s operating conditions and for proper sizing during design and installation.

Installation and connection

The fitting connects a 28 mm press pipe to an external R1' thread. The installation process involves inserting the pipe into the fitting and using a press tool to compress the fitting around the pipe. The sealing O-ring must be in place and undamaged before pressing. The external thread must be cleaned and free of debris to ensure a tight connection. Common installation errors include improper pressing, which can lead to leaks, and using damaged or incorrect O-rings. After installation, the connection should be visually inspected for even pressing and proper alignment.

Compatibility and accessories

This fitting is compatible with 28 mm stainless steel press pipe of the same material grade. It is intended for use in gas systems and must be combined with press tools suitable for the material and size. Additional components such as threaded valves or regulators may be required depending on the system configuration. Related products include other press fittings and threaded adapters from the IVAR PRESS GAS range.

Technical background for designers

The fitting operates by compressing the stainless steel body around the press pipe, creating a mechanical and sealing connection. The material, 1.4404 stainless steel, offers high corrosion resistance and mechanical strength, making it suitable for gas applications. The HNBR sealing ring provides flexibility and a reliable seal under varying temperatures. The design allows for integration into low-pressure gas systems, where the fitting’s PN 5 rating ensures compatibility with typical operating pressures. The service life and efficiency depend on proper installation, correct system pressure and environmental conditions.

Service and operation

No regular maintenance is required for this fitting under normal operating conditions. However, periodic visual inspections are recommended to check for signs of corrosion, mechanical damage or leakage. If the fitting is part of a system that experiences frequent pressure fluctuations or temperature extremes, more frequent checks may be necessary. The sealing ring should be replaced if it shows signs of wear or if the connection is suspected to be compromised.

Frequently asked questions

Can this fitting be used with natural gas and propane?
Yes, it is suitable for natural gas, biogas and liquid propane gas as stated in the technical description.

What is the minimum operating temperature for this fitting?
The fitting can operate at temperatures as low as -20 °C.

What tools are required for installation?
A press tool compatible with 28 mm stainless steel press fittings is required to compress the fitting around the pipe.

Can the sealing ring be replaced after installation?
The sealing ring is designed for use during installation and is not intended for replacement after the fitting has been pressed onto the pipe.