Plug PRESS fittings - N - 15mm IVAR.IVN51

Product detailed description

Plug PRESS fittings are commonly used in residential, commercial and industrial buildings for sealing ends of stainless steel pipes in heating, ventilation, water supply and fire protection systems. These fittings are often found in underfloor heating circuits, hot water distribution, solar thermal loops and industrial process lines. Installers typically use them to cap unused pipe ends during system construction or maintenance. The PN 16 pressure rating and wide operating temperature range make them suitable for both low-temperature and high-demand applications.

Correct installation is essential to ensure leak-free performance and long-term durability. The fitting must be pressed to the correct depth using a calibrated tool, and the indicator must show full engagement. This prevents under- or over-pressing, which can compromise the seal or damage the fitting. Installers should also verify that the pipe end is clean and free from burrs before pressing.

Technical parameters

The PN 16 rating indicates that the fitting can handle nominal pressures up to 16 bar at reference conditions. The operating temperature range from -20°C to +120°C allows it to function effectively in environments ranging from cold storage facilities to heated systems. These parameters are crucial for selecting the correct component for specific system conditions and ensuring compliance with relevant standards.

Installation and connection

Installation begins with cutting the pipe cleanly and deburring the end to prevent interference with the press fit. The fitting is then slid over the pipe and aligned. A dedicated pressing tool is used to compress the fitting around the pipe, forming a tight, permanent joint. The pressing depth must reach 54 mm to activate the indicator and confirm a secure connection. Common errors include using incorrect pressing tools, reusing fittings after failed attempts, or failing to verify the indicator status post-pressing.

Compatibility and accessories

This plug fitting is compatible with standard stainless steel pipes used in heating and plumbing systems. For complete system integration, ensure that all fittings and valves are from the same manufacturer or compatible series. Accessories such as pressing tools and calibration kits are required for proper installation and quality assurance.

Technical background for designers

The IVN51.15 operates through a mechanical pressing mechanism that forms a metal-to-metal seal between the fitting and the pipe. Its integration into a system depends on accurate pipe sizing and alignment to avoid stress points. Long-term efficiency is influenced by the quality of the pressing operation and the environmental conditions to which the system is exposed.

Service and operation

Once installed, these fittings require minimal maintenance due to their robust design and durable material. However, regular visual inspections should be conducted to check for signs of mechanical stress, corrosion or leaks. If any issues are detected, the fitting should be replaced immediately, as re-pressing is not recommended. There are no scheduled service intervals specified for this component.

Frequently asked questions

Can the IVN51.15 be used in solar thermal systems?
Yes, the fitting is suitable for solar thermal systems due to its temperature range and material properties.

Is the fitting compatible with copper pipes?
No, the IVN51.15 is designed specifically for stainless steel pipes and should not be used with copper.

What happens if the pressing tool is not calibrated correctly?
An incorrectly calibrated tool can lead to under-pressing or over-pressing, both of which may compromise the integrity of the joint.

Can the fitting be reused if the initial pressing fails?
No, once pressed, the fitting cannot be reused. A new fitting must be installed in case of failure.