Balancing valve - 3/4"; Kv 7,28 IVAR.CIM 727

Product detailed description

Flow balancing valves are essential components in hydronic systems, ensuring even distribution of thermal energy across different zones. Installers working on residential, commercial, and industrial heating and cooling systems often encounter the need to adjust flow rates to maintain system efficiency and prevent overloading of certain circuits. The IVAR 727034 is specifically designed for such applications, where precise flow control is required to maintain system balance and optimize energy use. It is commonly used in central heating systems, underfloor heating, and air handling units where accurate flow adjustment is critical for system performance.

Technical parameters

Material	Brass CC752S
Operating temperature	-10 °C
Nominal pressure	PN 20
Weight	0.614 kg
Code	727034
Brand	IVAR

The valve's PN 20 rating indicates it is suitable for systems operating at a maximum pressure of 20 bar, making it appropriate for standard heating and cooling applications. The operating temperature range from -10°C to +120°C allows for use in both cold and hot water systems. The Kv value of 7.28 is a key factor in determining the valve's flow capacity and is used in hydraulic calculations to size the valve correctly for the intended flow rate and pressure drop.

Installation and connection

The IVAR 727034 is installed in straight pipe runs to ensure accurate flow measurement and control. It features a 3/4 inch connection, typically with a male or female thread depending on system requirements. Prior to installation, the installer should verify the thread type and ensure that the valve is compatible with the system's piping. A common mistake is incorrect orientation of the valve, which can affect flow characteristics and lead to inaccurate balancing. The valve should be installed in a position that allows for easy access to the adjustment mechanism and that minimizes the risk of vibration or mechanical stress from adjacent components.

Compatibility and accessories

This valve is compatible with standard heating and cooling systems that use brass fittings and operate within the specified pressure and temperature ranges. It is often used in conjunction with differential pressure controllers and flow meters to achieve precise system balancing. No additional accessories are required for basic installation, but system designers may need to consider the use of isolation valves for maintenance access and pressure-reducing valves if the system exceeds the valve's maximum operating pressure.

Technical background for designers

The IVAR 727034 operates on the principle of linear adjustment of the flow path to control the volume of fluid passing through the valve. The brass CC752S material is selected for its resistance to corrosion and mechanical wear, ensuring long-term reliability in both hot and cold water environments. The valve integrates into the system by adjusting the flow to maintain a constant pressure differential across the circuit, which is essential for maintaining system balance. The service life and efficiency of the valve are influenced by the quality of the installation, the cleanliness of the system, and the absence of excessive vibration or thermal cycling.

Service and operation

Routine maintenance for this valve includes checking for leaks, ensuring the adjustment mechanism is free from debris, and verifying that the valve is operating within the specified pressure and temperature limits. No scheduled service intervals are provided in the brief, but any signs of wear or malfunction should be addressed promptly to prevent system imbalance. The valve should be closed during system maintenance to prevent damage from cleaning or pressure testing procedures.

Frequently asked questions

Can the IVAR 727034 be used in a system with a temperature above +120°C?
No, the valve is only rated for operation up to +120°C. Use in higher temperature systems would require a different model with a higher temperature rating.

Is the valve suitable for use in a closed-loop cooling system?
Yes, the valve is suitable for both heating and cooling systems, provided the operating conditions match the specified parameters.

Can the valve be used with a pressure higher than PN 20?
No, the valve is rated for a maximum pressure of PN 20. Exceeding this pressure could result in failure or reduced service life.

Is the valve compatible with copper piping?
Yes, the brass CC752S material is compatible with copper piping and is commonly used in such systems without the risk of galvanic corrosion.