Balancing valve - 6/4"; Kv 21,05 IVAR.CIM 747

Product detailed description

This balancing valve is commonly used in residential and commercial buildings for central heating and cooling applications. Installers typically integrate it into closed-loop systems where precise flow control is essential for maintaining system balance and efficiency. The valve is suitable for installation in underfloor heating circuits, radiators, and fan coil units, ensuring accurate flow regulation even in complex systems. Correct installation and commissioning are critical to achieving optimal performance and long-term reliability.

The valve is designed for use with water-based fluids and is installed in systems operating within specified temperature ranges. It is typically mounted in a horizontal position in the piping circuit, with access for adjustment and measurement. The presence of fixed measuring elements eliminates the need for additional components during flow verification, streamlining the commissioning process for engineers and technicians.

Technical parameters

Material	Brass CC752S
Operating temperature	-10 °C
Nominal pressure	PN 25
Weight	2.49 kg
Code	747112
Brand	IVAR

The valve’s nominal pressure rating of PN 25 indicates it is suitable for systems with maximum working pressures up to 25 bar. The operating temperature range from -10°C to +120°C allows for use in both heating and chilled water applications. The Kv value of 21.05 is essential for calculating flow rates and selecting the correct valve size for a given system requirement. These parameters guide the designer in ensuring the valve can handle expected flow conditions and maintain stability under varying loads.

Installation and connection

The valve is connected using 6/4 inch pipe threads and should be installed in accordance with standard piping practices. Ensure the valve is oriented correctly, with the direction of flow indicated on the body. Prior to installation, verify that the system piping is clean and free of debris to prevent internal damage. Secure the valve using appropriate fittings and tighten connections evenly to avoid stress on the body. A common mistake is incorrect orientation, which can lead to flow instability and inaccurate balancing. Always confirm the presence of fixed measuring elements before final tightening to ensure compatibility with flow meters and test instruments.

Compatibility and accessories

This valve is compatible with standard heating and cooling systems that operate within the specified pressure and temperature limits. It integrates with differential pressure controllers and flow meters for advanced balancing strategies. For system commissioning, it is recommended to use a calibrated flow meter and a pressure gauge. Additional components such as pipe unions or isolation valves may be required depending on the system layout and access requirements. Accessories such as locking devices may also be necessary for securing the valve setting after adjustment.

Technical background for designers

The valve operates via a linear adjustment mechanism that allows for precise flow setting. The CC752S brass construction provides good corrosion resistance and mechanical strength, making it suitable for long-term use in water-based systems. The fixed measuring elements reduce the need for additional instrumentation and simplify system diagnostics. System designers should consider the valve’s pressure drop characteristics and ensure that the upstream and downstream piping is sized appropriately to avoid turbulence and noise. The valve’s performance is influenced by the system’s overall hydraulic balance and the accuracy of the initial flow setting.

Service and operation

The valve requires minimal maintenance under normal operating conditions. Regular visual inspections are recommended to check for signs of leakage, corrosion, or mechanical wear. If the system experiences frequent pressure fluctuations, it is advisable to recheck the valve setting periodically. No specific service intervals are provided in the technical documentation, but any changes in system performance should prompt a reassessment of the flow balance. The valve can be isolated for inspection or replacement using the built-in shut-off function, allowing for maintenance without draining the entire system.

Frequently asked questions

Can this valve be used in chilled water systems?
Yes, the valve is suitable for use in chilled water systems due to its low-temperature tolerance of -10°C.

Is it possible to adjust the flow without removing the valve from the system?
Yes, the valve allows for flow adjustment and measurement without the need for removal or system shutdown.

What type of thread is used for connection?
The valve connects using 6/4 inch pipe threads, ensuring compatibility with standard piping systems.

Can the valve be used with external measuring devices?
Yes, the fixed measuring elements allow for direct connection to external flow meters and test equipment.