T-piece 90° - unambiguous - N - 28mm IVAR.IVN40

Product detailed description

The 90° T-piece serves as a critical component in press-fit piping systems used in residential and commercial buildings. Installers commonly apply these fittings in central heating circuits, solar thermal systems, fire suppression networks, and compressed air installations. The fitting enables the creation of branch lines at right angles while maintaining structural integrity and leak-free performance. Precise alignment during installation ensures long-term reliability and minimises maintenance requirements.

Designed for environments where thermal expansion and mechanical stress occur, this T-piece supports a range of system pressures and temperatures. Its press-fit design eliminates the need for welding or threading, reducing installation time and potential points of failure. Installers should ensure the system media is compatible with the materials used in the fitting to prevent degradation over time.

Technical parameters

Material	Stainless steel grade Wst. Nr. 1.4404 (AISI 316L), EPDM O-ring
Operating temperature	-20 °C
Nominal pressure	PN 16
Code	IVN40.28
Brand	IVAR

The operating temperature range of -20°C to +85°C allows use in cold and warm water circuits, while the maximum temperature limit of +120°C supports short-term exposure in heating systems. The PN16 pressure rating ensures suitability for medium-pressure applications. These parameters are essential when selecting the correct fitting for the intended operating conditions and media.Installation and connection Correct installation begins with ensuring all pipe ends are clean and free from burrs. The three press-fit ends require insertion into corresponding pipe sections until the stop mark is reached. A press tool is then applied perpendicularly to each end to compress the fitting onto the pipe. The fit is confirmed using a depth indicator that shows successful compression when reaching 54 mm. Common errors include misalignment of the tool or insufficient compression force, which can lead to leakage or premature failure. Always verify the tightness after installation and during initial testing of the system.Compatibility and accessories This T-piece is compatible with standard stainless steel pipes of appropriate diameter for press-fit connections. When designing a system, ensure all adjacent components—such as valves, regulators, and other fittings—are also rated for PN16 and the same temperature range. Additional accessories such as press tools and calibration gauges are required for proper installation. For complex branch configurations, additional T-pieces or elbows may be needed depending on the layout.Technical background for designers The 90° T-piece functions by creating a directional change in the flow path while maintaining hydraulic balance. The stainless steel body resists corrosion and maintains structural strength even under thermal cycling. The EPDM O-ring provides a flexible yet durable seal that adapts to minor pipe misalignments. Designers should account for the internal geometry when calculating pressure drop and flow rates in the system. System longevity depends on correct material pairing and adherence to recommended installation practices.Service and operation Routine inspection should focus on signs of leakage, especially around the press-fit joints. Check the condition of the EPDM O-ring periodically for wear or hardening, which could compromise the seal. No scheduled service intervals are specified in the technical documentation; however, any suspected issues should be addressed immediately to avoid system downtime. Ensure the fitting remains free from external damage and chemical exposure outside its specified tolerances.Frequently asked questions

Can this T-piece be used in solar thermal systems?
Yes, it is suitable for solar systems as long as the operating temperatures and pressures remain within the specified ranges.

Is the EPDM O-ring resistant to aggressive media?
It is designed for general-purpose media but should not be used with highly corrosive substances unless verified in the technical data sheet.

Can multiple T-pieces be installed in series on a single line?
Yes, provided each fitting is correctly aligned and compressed according to the manufacturer’s instructions.

What happens if the press-fit is not fully compressed?
If the depth indicator does not reach 54 mm, the connection will not be sealed properly and may result in leakage or failure under pressure.