Safety valve for hot water - 1 "Fx5/4 "F; Kv 0,684; 8bar; KB25 DUCO IVAR.PV KB

Product detailed description

This safety valve is commonly used in residential and commercial hot water systems where pressure regulation is essential for system integrity and safety. It is typically installed in heating circuits, water storage tanks, and circulation loops to prevent overpressure situations that could lead to system failure. The valve is designed for use in closed systems where thermal expansion or pump operation may cause pressure fluctuations. Installers and technicians working on central heating systems, solar thermal installations, or industrial hot water circuits will find this valve suitable for its intended function.

Correct installation and selection of a safety valve are critical to ensuring the safe operation of hot water systems. This valve is intended for use in systems with a maximum operating temperature of up to +95°C and a nominal pressure rating of PN16. The adjustable opening pressure allows the valve to be tailored to specific system requirements, ensuring that it activates at the desired pressure threshold to release excess pressure and protect the system.

Technical parameters

Material	Brass
Operating temperature	0 °C
Nominal pressure	PN 16
Code	692532.80
Brand	IVAR

The nominal pressure rating of PN16 indicates that the valve is suitable for systems operating at up to 16 bar. The adjustable opening pressure range from 6 to 10 bar allows the installer to select the appropriate pressure threshold for the specific application. The operating temperature range from 0°C to +95°C ensures compatibility with a wide range of hot water systems. These parameters are essential for proper sizing and selection to ensure the valve functions effectively under the expected operating conditions.

Installation and connection

The valve is connected using 1 inch female and 5/4 inch female threads, ensuring compatibility with standard pipe fittings in hot water systems. During installation, it is important to verify that the valve is oriented correctly, with the flow direction indicated on the body. The valve should be installed in a location that allows for easy access for inspection and adjustment. Common installation mistakes include incorrect orientation, which can affect the valve’s performance, and failure to specify the required opening pressure at the time of ordering. The opening pressure must be selected from the available options (6, 7, 8, 9, or 10 bar) and communicated to the supplier before ordering.

Compatibility and accessories

This safety valve is compatible with standard hot water systems and can be integrated with pressure gauges, expansion vessels, and circulation pumps. When ordering, the desired opening pressure must be specified, as the valve is not supplied with a default setting. No additional accessories are included in the standard delivery, so any required components such as pressure gauges or mounting brackets must be ordered separately. The valve is not compatible with steam systems or high-temperature applications beyond the specified operating range.

Technical background for designers

The valve operates by allowing the release of excess pressure 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 hot water systems. The adjustable pressure setting allows for flexibility in system design, enabling the valve to be matched to the specific pressure requirements of the installation. The service life and efficiency of the valve are influenced by factors such as the frequency of pressure fluctuations, the quality of the installation, and the operating temperature. Proper integration into the system ensures that the valve functions reliably and safely over its expected service life.

Service and operation

Regular inspection of the valve is recommended to ensure that it remains functional and free from blockages. The valve should be checked for signs of wear, corrosion, or leakage. If the valve is found to be faulty or not operating correctly, it should be replaced immediately. No specific service intervals are provided in the technical data, but it is advisable to inspect the valve during routine system maintenance. The opening pressure should not be adjusted unless the system requirements have changed, and any adjustments should be made in accordance with the manufacturer’s instructions.

Frequently asked questions

Can the valve be used in a closed hot water system?
Yes, the valve is suitable for use in closed hot water systems where pressure regulation is required to prevent overpressure situations.

What is the maximum operating temperature for this valve?
The valve is rated for operation up to +95°C, making it suitable for use in hot water systems with typical temperature ranges.

Is the opening pressure fixed or adjustable?
The opening pressure is adjustable and can be set to one of the available pressure settings (6, 7, 8, 9, or 10 bar) at the time of ordering.

What thread types are available for connection?
The valve is equipped with 1 inch female and 5/4 inch female threads for connection to standard pipe fittings.