Grommet - male thread - N - 42mm-R6/4" IVAR.IVN81

Product detailed description

This stainless steel male threaded grommet is commonly used in industrial and technical installations such as medical facilities, fire sprinkler systems, heating systems, pressurised air systems, solar installations and inert gas applications. It is suitable for environments where reliable and durable connections are required under varying thermal conditions. Installers working in commercial and industrial buildings often use these fittings in closed-loop systems where leak-free performance is essential.

The grommet is designed for integration into press-fit systems where it connects press-fittings to threaded components. It ensures compatibility between press-to-connect and threaded piping systems and is typically used in applications requiring a high degree of mechanical and thermal resistance. The fitting is particularly useful in systems where press-fit technology is preferred for its ease of installation and reliability.

Technical parameters

Material	Stainless steel grade Wst. No. 1.4404 (AISI 316L), EPDM O-ring
Operating temperature	-20 °C
Nominal pressure	PN 16
Code	IVN81.4216
Brand	IVAR

The nominal pressure rating of PN 16 indicates the fitting’s ability to handle internal pressure under normal operating conditions. The operating temperature range from -20°C to +85°C, with a maximum of +120°C, allows the grommet to function in both cold and hot environments. These parameters are critical for determining suitability in specific system designs and ensuring long-term integrity of the connection.

Installation and connection

The grommet is installed using standard press-fit tools compatible with the system’s pipe diameter. It must be fully inserted into the pipe until the press-fit indicator aligns at 54 mm. The male thread (R6/4") is used to connect to female threaded components. During installation, ensure the EPDM O-ring is undamaged and properly seated. Common mistakes include insufficient pressing depth or incorrect alignment, which can lead to leaks or reduced mechanical strength. Always verify the press-fit indicator position and inspect the mating surfaces for debris or damage before final tightening.

Compatibility and accessories

This grommet is compatible with press-fit systems using stainless steel pipes of the same class (Wst. No. 1.4404). It is intended for use with EPDM O-rings and must be used with press-fit tools calibrated for the specified pipe size. No additional accessories are required for basic installation, though press-fit tools and calibration devices may be necessary for proper execution. Related products include press-fit fittings and stainless steel piping components of the same class.

Technical background for designers

The grommet functions as a transition fitting between press-fit and threaded systems. The stainless steel body provides corrosion resistance and structural integrity, while the EPDM O-ring ensures a tight seal under pressure and temperature variations. The material choice (1.4404/AISI 316L) is ideal for environments where chemical resistance and durability are important. The design allows for integration into both high-pressure and high-temperature systems, provided the operating conditions remain within the specified limits. Long-term efficiency depends on correct installation, adherence to press-fit depth and avoidance of mechanical stress on the connection.

Service and operation

No regular maintenance is required for this fitting under normal operating conditions. However, periodic visual inspections are recommended to ensure the integrity of the press-fit connection and the absence of external damage or corrosion. If the system is decommissioned or modified, the grommet should be carefully removed to avoid deformation or damage to the threads. There are no defined service intervals for this component.

Frequently asked questions

Can this grommet be used with copper pipes?
No. This grommet is designed specifically for stainless steel press-fit systems and is not compatible with copper piping.

Is the EPDM O-ring replaceable?
Yes, the EPDM O-ring can be replaced if damaged or worn, provided the grommet is disassembled correctly during maintenance or repair.

What is the maximum allowable temperature for continuous operation?
The maximum allowable temperature for continuous operation is +85°C, with a short-term maximum of +120°C.

Does the grommet require a specific press-fit tool?
Yes, the grommet must be installed using a press-fit tool calibrated for the specific pipe size and system requirements.