Safety valve for heating - 1/2 "FF; 1,8bar IVAR.PV 1234

Product detailed description

Heating safety valves are essential components in residential and commercial heating systems to prevent overpressure conditions that could lead to equipment failure or safety hazards. Installers working on central heating systems, including radiators, underfloor heating, and boiler circuits, frequently encounter the need for pressure relief. This valve is commonly used in domestic and light commercial applications where a compact, reliable pressure relief solution is required. It is suitable for systems operating with water or glycol-based heat transfer media and must be installed in accessible locations for routine checks and maintenance.

Correct selection and installation of a safety valve ensures the system operates within safe pressure limits. The IVAR PV 1234 is designed for integration into systems with nominal pressures up to PN16 and is compatible with a wide range of boiler and pump configurations. It is particularly useful in systems where pressure fluctuations are common due to thermal expansion or pump cycling.

Technical parameters

Material	Brass CW617N
Operating temperature	0 °C
Nominal pressure	PN 16
Code	I00205018
Brand	IVAR

The operating temperature range of 0°C to 110°C allows the valve to function in both cold and hot system conditions. The nominal pressure rating of PN16 indicates the maximum pressure the valve can safely handle under normal operating conditions. The CW617N brass material provides good corrosion resistance and mechanical strength, making it suitable for long-term use in heating systems. These parameters are critical for determining the valve's suitability for a specific application and ensuring proper system performance.Installation and connection The valve is installed in a vertical position with the discharge pipe directed downward to ensure proper drainage of released media. The 1/2 inch FF (female flange) connection requires a matching male flange on the system piping. Before installation, the installer should verify the system's operating pressure and temperature to ensure compatibility with the valve's specifications. Common installation mistakes include incorrect orientation, which can lead to improper drainage, and failure to secure the discharge pipe, which can cause leaks or damage during pressure release. It is also important to ensure the valve is installed in a location that allows for easy access during maintenance.Compatibility and accessories This valve is compatible with standard heating system components such as expansion vessels, circulation pumps, and pressure-reducing valves. For complete system protection, it should be used in conjunction with a pressure gauge to monitor system pressure levels. No additional accessories are required for basic installation, but a discharge pipe and fittings may need to be ordered separately depending on the system layout. Related products include other IVAR PV 1234 models with different opening pressure settings for varied system requirements.Technical background for designers The IVAR PV 1234 operates on a spring-loaded mechanism that opens when the system pressure exceeds the set threshold. The CW617N brass body provides good thermal conductivity and resistance to corrosion from water and glycol mixtures. The valve is designed to integrate into closed-loop heating systems where pressure fluctuations are managed through thermal expansion. The service life of the valve is influenced by the frequency of pressure cycles, the quality of the system water, and the presence of contaminants. Regular inspection of the spring and sealing surfaces is recommended to maintain operational efficiency.Service and operation Routine maintenance includes visual inspection of the valve body for signs of corrosion or mechanical damage and checking the discharge pipe for blockages. The sealing surface should be inspected for wear or pitting that could affect the valve's ability to close properly. While no specific service intervals are provided in the brief, it is advisable to perform these checks during system maintenance cycles. If the valve has been activated, it should be tested for proper seating and resealing to ensure continued protection.Frequently asked questions

Can the IVAR PV 1234 be used in glycol-based heating systems?
Yes, the CW617N brass construction is suitable for use with glycol-based heat transfer fluids within the specified temperature range.

Is the opening pressure of the valve adjustable?
The valve is supplied with a fixed opening pressure ranging from 1.8 to 6 bar. No user adjustment is possible after installation.

Can this valve be installed in a horizontal position?
No, the valve must be installed in a vertical position with the discharge pipe directed downward to ensure proper drainage and function.

What is the maximum operating temperature for this valve?
The valve is rated for operation up to 110°C, making it suitable for hot water heating systems.