Pressure Reducing Valve - with fitting and pressure gauge - 6/4 "MM IVAR.5350

Product detailed description

Pressure reducing valves are essential in systems where the incoming pressure exceeds the safe operating level for downstream components. This model is commonly used in residential and commercial buildings, including central heating systems, domestic hot and cold water supply lines, and industrial applications where precise pressure regulation is required. Installers typically encounter this valve in scenarios where mains pressure must be reduced to a lower, stable level to protect appliances, piping, and fittings from damage. The valve is designed for use with water as the working medium and is suitable for systems operating at a maximum temperature of +40°C.

Correct selection of a pressure reducing valve depends on system parameters such as inlet pressure, flow rate, and required downstream pressure. The valve must be sized to handle the expected flow without excessive pressure drop or cavitation. The PN 25 rating indicates the valve is suitable for systems with a nominal pressure of up to 25 bar. The operating temperature limit of +40°C must also be considered to ensure compatibility with the system’s thermal conditions.

Technical parameters

Material	Brass CW602N
Operating temperature	+40 °C
Nominal pressure	PN 25
EAN	8016615077018
Weight	3.198 kg
Code	535081
Brand	IVAR

The valve’s PN 25 rating means it can handle a nominal pressure of up to 25 bar, making it suitable for most domestic and light industrial applications. The maximum operating temperature of +40°C is typical for cold water systems and heating systems with low-temperature operation. The CW602N brass construction ensures good corrosion resistance and mechanical strength, while the NBR sealing material is suitable for water-based systems at the specified temperature range.

Installation and connection

The valve is equipped with external metric threads for both inlet and outlet connections, sized at 6/4 inch. Installers should ensure that the system is isolated and drained before fitting the valve. The fitting should be aligned with the flow direction indicated on the body to prevent incorrect installation. A common mistake is neglecting to check the inlet pressure before installation, which can lead to improper operation or damage. The pressure gauge is pre-mounted and should be inspected for correct orientation and secure mounting. After installation, the system should be slowly pressurised and the downstream pressure adjusted using the valve’s adjustment mechanism.

Compatibility and accessories

This valve is compatible with standard copper and steel piping systems that use metric threaded connections. It is typically used in conjunction with pressure gauges, isolation valves, and safety relief valves to form a complete pressure regulation and monitoring system. No additional accessories are included in the standard package. Installers should ensure that all components are compatible with the system’s pressure and temperature requirements.

Technical background for designers

The valve operates by reducing a higher upstream pressure to a lower, stable downstream pressure. It uses a spring-loaded diaphragm mechanism to maintain the set pressure range. The CW602N brass body provides good mechanical strength and resistance to corrosion in water-based systems. The NBR sealing material is suitable for the specified temperature range and ensures a tight seal under operating conditions. The valve should be integrated into the system in a location where it is easily accessible for adjustment and inspection. The operating life and efficiency of the valve are influenced by the quality of the water, the presence of particulate matter, and the frequency of pressure fluctuations.

Service and operation

Regular inspection is recommended to ensure the valve is functioning correctly. The pressure gauge should be checked for accuracy and the valve body for signs of corrosion or leakage. The adjustment mechanism should be tested to confirm that the downstream pressure remains within the set range. No specific service intervals are provided in the technical documentation, but maintenance should be performed as part of routine system checks. If the valve shows signs of wear or malfunction, it should be replaced to avoid system failure.

Frequently asked questions

Can this valve be used in a domestic hot water system?
It is suitable for systems with a maximum operating temperature of +40°C. It is not recommended for higher temperatures as the NBR sealing material may degrade.

What is the pressure range that can be adjusted?
The valve allows adjustment from 1 to 6 bar, making it suitable for most domestic and light industrial applications.

Is the pressure gauge included in the package?
Yes, the valve comes with an integrated pressure gauge with a range of 0 to 10 bar.

Can this valve be installed in a vertical orientation?
Yes, as long as the flow direction indicated on the valve body is followed and the gauge is positioned for easy reading.