Safety valve for heating - 1/2 "FF; 2,5bar IVAR.PV 1234

Product detailed description

Heating systems in residential and commercial buildings require reliable pressure protection to prevent damage from overpressure events. This IVAR safety valve is commonly installed in central heating systems, where it acts as a critical component in maintaining system integrity. Installers and technicians working on boiler circuits, heat exchangers and expansion vessel connections will find this valve suitable for integration into closed-loop heating systems. The valve is designed for use with water-based heating media and is selected based on system pressure and temperature requirements.

Proper sizing and positioning of the valve are essential to ensure it responds effectively to pressure fluctuations. The valve is typically mounted in accessible locations near the boiler or expansion vessel, allowing for regular inspection and maintenance. It is important to verify that the system pressure does not exceed the valve’s maximum operating parameters to avoid premature failure or ineffective pressure relief.

Technical parameters

Material	Brass CW617N
Operating temperature	0 °C
Nominal pressure	PN 16
Code	I00205025
Brand	IVAR

The valve is rated for a nominal pressure of PN 16, indicating its suitability for systems operating up to 16 bar. The operating temperature range extends from 0°C to 110°C, making it compatible with both low-temperature and high-temperature heating systems. The material, brass CW617N, provides good corrosion resistance and mechanical strength, ensuring long-term performance in wet environments. These parameters are essential for selecting the correct valve for a specific system configuration.

Installation and connection

The valve is equipped with a 1/2 inch FF (female flange) connection, which must be securely fastened to the system piping using appropriate gaskets and bolts. Before installation, the system should be depressurised and drained to prevent injury or damage. The valve should be mounted in a vertical orientation with the discharge pipe directed away from occupied areas. Common installation errors include incorrect orientation, use of incompatible gasket materials, or failure to secure the flange properly, which can lead to leaks or reduced performance.

Compatibility and accessories

This safety valve is compatible with standard heating systems that use PN 16-rated piping and fittings. It is typically used in conjunction with pressure-reducing valves, expansion vessels and temperature sensors to form a complete pressure management system. For complete system protection, installers may also need to order pressure gauges and check valves. No specific accessories are required for this model, but the discharge pipe must be sized appropriately to handle the expected flow rate during pressure relief events.

Technical background for designers

The valve operates by opening when the system pressure exceeds the set threshold, allowing excess pressure to be released through the discharge port. The brass CW617N body provides good thermal conductivity and resistance to water corrosion, making it suitable for long-term use in heating systems. The valve’s performance is influenced by the system’s hydraulic balance and the presence of air pockets or thermal expansion. Designers should ensure that the valve is integrated into the system in a way that allows for efficient pressure relief without disrupting normal system operation.

Service and operation

Regular inspection of the valve is recommended to ensure it remains free from debris and operates smoothly. The discharge port should be checked for blockages, and the flange connection should be verified for tightness. No specific service intervals are provided in the technical data, but the valve should be tested periodically to confirm it opens and closes correctly. If the valve shows signs of wear or fails to respond to pressure changes, it should be replaced immediately to maintain system safety.

Frequently asked questions

Can this valve be used in a closed-loop heating system?
Yes, the valve is suitable for closed-loop heating systems operating within the specified pressure and temperature range.

Is the valve compatible with copper piping?
Yes, the brass CW617N body is compatible with copper piping when installed with appropriate gaskets and fittings.

What is the maximum temperature the valve can handle?
The valve is rated for operation up to 110°C, making it suitable for high-temperature heating systems.

Can the opening pressure be adjusted?
No, the valve is supplied with a fixed opening pressure ranging from 1.8 to 6 bar, depending on the system requirement.