Safety valve for heating - 1 "Fx5/4 "F; Kv 0,684; 5bar; KD25 DUCO IVAR.PV KD

Product detailed description

This safety valve is commonly used in residential and commercial heating systems to prevent overpressure and ensure system integrity. Installers and service technicians typically integrate it into closed-loop systems, where pressure fluctuations can occur due to thermal expansion or pump operation. The valve is suitable for systems operating within the specified temperature range and requires careful selection of the opening pressure to match the system's design parameters.

Proper installation ensures that the valve can respond quickly to pressure changes, releasing excess media before system components are damaged. The valve is typically mounted on the highest point of the system or at a location where pressure accumulation is most likely. It is essential to verify the system's maximum operating pressure and select an appropriate opening pressure setting to avoid unnecessary discharge or failure to act.

Technical parameters

Material	Brass
Operating temperature	-10 °C
Nominal pressure	PN 16
Code	692532.50
Brand	IVAR

The operating temperature range of -10°C to +120°C allows the valve to function in both cold and hot environments, making it suitable for a wide range of heating applications. The PN 16 rating indicates that the valve is designed for systems with a maximum allowable pressure of 16 bar at reference temperature. The adjustable opening pressure range from 0.5 to 10 bar allows the installer to tailor the valve's response to the specific system requirements.

Installation and connection

The valve is equipped with 1 F x 5/4 F connections, which are standard for many heating system components. Installers should ensure that the threads are clean and free of debris before tightening. A wrench or spanner should be used to secure the connection without over-tightening, which can damage the threads or seating surface. The valve should be installed in a vertical position with the flow direction indicated on the body. Common mistakes include incorrect orientation, which can affect the valve's performance, and failure to specify the required opening pressure during ordering.

Compatibility and accessories

This valve is compatible with standard heating system components that use 1 F x 5/4 F connections. When ordering, the installer must specify the desired opening pressure from the available range of 0.5 to 10 bar in 0.5 or 1 bar increments. No additional accessories are required for basic installation, but system-specific components such as pressure gauges or control valves may be necessary depending on the application.

Technical background for designers

The valve operates by allowing media to escape when the system pressure exceeds the set opening pressure. The brass construction provides good corrosion resistance and mechanical strength, making it suitable for long-term use in heating systems. The design ensures a tight seal when closed and rapid response when the pressure threshold is exceeded. The valve's performance is influenced by the system's operating conditions, including temperature and media type. Designers should consider the system's maximum pressure and thermal expansion characteristics when selecting the appropriate opening pressure setting.

Service and operation

Regular inspection is recommended to ensure the valve remains functional and free from blockages. The seating surface should be checked for wear or damage, and the spring mechanism should be tested for responsiveness. No specific service intervals are provided in the brief, but any signs of leakage or failure to open should prompt immediate investigation and, if necessary, replacement.

Frequently asked questions

Can the valve be used in systems with temperatures below -10°C?
No, the valve is not suitable for use in systems operating below -10°C as specified in the technical data.

Is it possible to adjust the opening pressure after installation?
No, the opening pressure must be specified at the time of ordering and cannot be adjusted on-site.

Can this valve be used in open-loop systems?
It is primarily designed for closed-loop heating systems. Use in open-loop systems should be verified against the system's pressure and temperature requirements.

What is the maximum allowable pressure for this valve?
The valve is rated for PN 16, meaning it is suitable for systems with a maximum allowable pressure of 16 bar at reference temperature.