Pressure Reducing Valve - with Fittings - 1" FF FIV.08026

Product detailed description

This pressure reducing valve is commonly used in domestic and commercial water supply and heating systems to regulate downstream pressure from mains or high-pressure sources. Installers often encounter scenarios where fluctuating upstream pressure could damage sensitive components such as expansion vessels, boilers, or circulation pumps. The valve ensures stable outlet pressure within the set range, protecting downstream equipment and enhancing system longevity.

In multi-residential buildings and industrial facilities, this valve is frequently integrated into feed lines for heating circuits or pre-insulated pipe runs. It supports both new installations and retrofit projects where pressure stability is required. The compact design allows for easy mounting in tight spaces behind panels or inside mechanical rooms.

Technical parameters

Material	Brass CW617N
Operating Temperature	+85 °C
Nominal Pressure	PN 25
Code	I08026100
Brand	IVAR

The maximum operating temperature of +85 °C makes this valve suitable for hot water applications, while the PN 25 rating indicates its ability to handle upstream pressures up to 25 bar. This is essential when selecting the correct valve for high-pressure mains or closed-loop systems. The CW617N brass alloy provides resistance to corrosion and wear, supporting long-term reliability in aggressive environments.

Installation and connection

The valve is designed for direct installation between two pipe sections using 1-inch internal female thread fittings. Prior to assembly, the installer should verify that the upstream and downstream piping is clean and free from debris. A torque wrench is recommended to avoid over-tightening the threaded connections, which can cause gasket damage or leaks. Common installation errors include incorrect orientation (the flow direction arrow must align with the fluid path) and failure to isolate the system during commissioning.

Compatibility and accessories

This pressure reducing valve is typically used in conjunction with pressure gauges and non-return valves to monitor and maintain system integrity. For complete protection, it is advisable to combine it with safety relief valves and expansion tanks in closed systems. All additional components must be selected according to the manufacturer’s guidelines for system compatibility.

Technical background for designers

The valve operates by restricting the flow area in response to changes in downstream pressure. As pressure increases beyond the setpoint, the diaphragm moves, adjusting the opening to maintain a consistent outlet pressure. The CW617N brass body offers good thermal conductivity and durability under fluctuating loads. System designers should consider the hydraulic characteristics of the entire circuit, including friction losses and component resistance, to ensure accurate pressure regulation and prevent overloading the valve.

Service and operation

Regular inspection is necessary to ensure the valve remains functional. Checkpoints include verifying the outlet pressure against the setpoint, inspecting for signs of leakage around the threads, and ensuring the adjustment mechanism is not seized. While specific service intervals are not provided, any irregularities such as pressure fluctuations or audible hissing should prompt immediate investigation and, if needed, replacement of the unit.

Frequently asked questions

Can this valve be installed in a vertical position?
Yes, the valve can be mounted vertically as long as the flow direction indicated on the body is maintained.

Is it suitable for use with chemical solutions?
It is intended for potable water and heating systems. Use in chemical environments requires verification against the manufacturer’s compatibility data.

How does the adjustment range affect performance?
The 0.5 to 6 bar range allows for precise control in low to medium pressure applications. Beyond this range, the valve may not function correctly.

What should be checked after installation?
Confirm the outlet pressure matches the desired setting, ensure all connections are secure, and observe the system for any abnormal noise or vibration.