Safety valve for hot water - 6/4 "Fx2 "F; 600kW; 6bar; KB40 DUCO IVAR.PV KB

Product detailed description

Hot water safety valves are essential components in heating and sanitary systems where pressure fluctuations can occur due to thermal expansion or pump operation. This model is commonly used in industrial and large commercial buildings, including hotels, hospitals, and multi-occupancy residential complexes. Installers typically integrate it into closed-loop hot water systems, where it ensures system integrity by releasing excess pressure when thresholds are exceeded. The valve operates within a temperature range from 0°C to +95°C and is suitable for systems with a maximum power output of 600kW.

Correct sizing and positioning of the valve are critical to ensure it functions effectively without unnecessary discharge. The valve must be installed in a location that allows for easy access for inspection and maintenance. It is typically mounted on a vertical pipe section, with the discharge pipe directed to a safe location, such as a drainage point or a collection tank. The valve must be installed in accordance with local plumbing codes and manufacturer guidelines.

Technical parameters

Material	Brass
Operating temperature	0 °C
Nominal pressure	PN 16
Code	694050.60
Brand	IVAR

The PN 16 rating indicates the valve is suitable for systems operating at a maximum pressure of 16 bar. The adjustable opening pressure range from 6 to 10 bar allows for customisation to match the system's design pressure. The operating temperature range from 0°C to +95°C ensures compatibility with typical hot water systems. These parameters are essential for selecting the correct model based on the system's hydraulic requirements and thermal conditions.

Installation and connection

This valve is equipped with 6/4" F x 2" F threaded connections, making it compatible with standard pipe sizes in industrial and commercial installations. The installation procedure involves securing the valve to the system using appropriate sealing materials, such as PTFE tape or a suitable gasket. The discharge pipe must be sized to handle the maximum flow rate without creating backpressure. Common installation mistakes include incorrect orientation, insufficient support for the discharge line, and failure to specify the required opening pressure during ordering. Always verify the system pressure and temperature conditions before installation.

Compatibility and accessories

This safety valve is designed for use with hot water systems and is compatible with standard plumbing components such as pressure-reducing valves, expansion vessels, and temperature sensors. When ordering, it is essential to specify the desired opening pressure (6, 7, 8, 9, or 10 bar) to match the system's requirements. No additional accessories are included in the standard package. Ensure that the discharge pipe is correctly sized and routed to a safe location to prevent water damage.

Technical background for designers

The valve operates on a spring-loaded mechanism that opens when the system pressure exceeds the set threshold. The brass construction provides good corrosion resistance and mechanical strength, making it suitable for hot water environments. The adjustable pressure range allows for precise control over system safety margins. The valve integrates into the system as a fail-safe component, ensuring that pressure does not exceed safe limits during thermal expansion or pump operation. The service life and efficiency depend on the quality of installation, the cleanliness of the system, and the frequency of maintenance checks.

Service and operation

Routine inspection is recommended to ensure the valve remains functional and free from blockages. The discharge pipe should be checked for signs of wear or leakage. No specific service intervals are provided in the brief, but periodic testing of the valve's operation is advised. If the valve shows signs of corrosion or mechanical failure, it should be replaced immediately. Always refer to the manufacturer's technical documentation for detailed service procedures.

Frequently asked questions

Can the opening pressure be adjusted after installation?
No, the opening pressure must be specified at the time of ordering. The valve is supplied with a fixed setting of 6, 7, 8, 9, or 10 bar.

Is this valve suitable for use in open hot water systems?
No, this model is designed for closed-loop hot water systems where thermal expansion can cause pressure increases.

What is the maximum operating temperature for this valve?
The valve is rated for operation up to +95°C, as specified in the technical parameters.

Can this valve be used with glycol-based heat transfer fluids?
There is no information provided in the brief regarding compatibility with glycol-based fluids. Consult the manufacturer's technical data sheet for confirmation.