Press fittings stopper - N - 22mm IVAR.IVN51

Product detailed description

The IVAR IVN51.22 press fitting stopper is commonly used in residential and commercial building services for sealing pipe ends during installation or maintenance. It is suitable for use in closed-loop systems such as underfloor heating, domestic hot water circuits, and fire suppression systems. Installers working in HVAC, plumbing, and industrial sectors will find this component useful for temporary or permanent sealing applications. Its design ensures compatibility with IVAR’s range of stainless steel press fittings and piping, allowing secure and leak-free connections when properly installed.

When integrating this stopper into a system, it is important to ensure that the press tool is correctly calibrated and that the stopper is fully compressed to the specified dimension. The sealing integrity of the connection relies on the precision of the pressing process and the correct positioning of the stopper within the pipe. This component is not suitable for open-ended systems unless specifically designed for such use, and must be used in accordance with the manufacturer’s guidelines for safe operation.

Technical parameters

Material	Stainless steel grade 1.4404 (AISI 316L)
Operating temperature	-20 °C
Nominal pressure	PN 16
Code	IVN51.22
Brand	IVAR

The nominal pressure rating of PN 16 indicates that the stopper can be used in systems operating up to 16 bar. The operating temperature range from -20 °C to +85 °C allows for use in environments with fluctuating thermal conditions. These parameters are essential for determining suitability in specific applications such as solar heating or industrial processes involving inert gases.

Installation and connection

To install the IVN51.22 press fitting stopper, the pipe end must be clean and free from burrs. The stopper is inserted into the pipe until it reaches the end, ensuring that it is aligned straight. A suitable press tool is then used to compress the fitting to a dimension of 54 mm, which is indicated by the tool’s marking or the stopper’s built-in indicator. After pressing, the connection should be visually inspected for even compression and absence of gaps. Common installation errors include using incorrect press tool sizes, failing to align the stopper correctly before pressing, and attempting to reuse the fitting after initial pressing. These mistakes can compromise the integrity of the seal and lead to leaks during operation.

Compatibility and accessories

This stopper is specifically designed for use with IVAR stainless steel pipes and press fittings. It is recommended to use it in conjunction with IVAR’s press tools that are calibrated for 22 mm components. No additional accessories are required for basic installation, though it is advised to have a suitable measuring tool available to confirm the compressed size. For complex systems, it is good practice to have spare parts on site to address any unexpected issues during installation.

Technical background for designers

The IVN51.22 press fitting stopper operates by forming a mechanical and hydraulic seal through the application of a controlled force using a press tool. The material, stainless steel grade 1.4404 (AISI 316L), offers high resistance to corrosion and is suitable for a wide range of fluids including potable water, glycol mixtures, and inert gases. The material’s strength and flexibility allow it to maintain a secure connection under varying pressure and temperature conditions. Proper integration into a system requires careful planning to ensure that the stopper is placed in positions that do not interfere with the flow of media and that it is accessible for future maintenance or replacement.

Service and operation

Once installed, the stopper requires no regular maintenance. However, during routine inspections, it is recommended to check for signs of mechanical damage, such as cracks or deformation, which could indicate a compromised seal. The integrity of the pressing can also be verified by measuring the compressed dimension against the specified 54 mm. There are no defined service intervals for this component, as it is designed for long-term use provided it remains undamaged and is not subjected to excessive stress or vibration.

Frequently asked questions

Can the IVN51.22 be used in a closed-loop heating system?
Yes, the stopper is suitable for closed-loop heating systems operating within the specified pressure and temperature limits. It is commonly used in underfloor heating and domestic hot water systems.

Is the stopper compatible with IVAR stainless steel pipe?
Yes, the IVN51.22 is specifically designed for use with IVAR stainless steel pipes and press fittings. It is not compatible with copper or other non-IVAR press systems.

Always verify the pressing depth using the tool’s indicator or a measuring device.

Can the IVN51.22 be reused after pressing?
No, once the stopper has been pressed, it cannot be reused. Attempting to reuse it may result in a weak or failed seal. A new stopper must be installed for each connection.