Balancing valve - 3/4"; Kv 3,77 IVAR.CIM 747

Product detailed description

Installers working on residential and commercial heating and cooling systems frequently require precise control over flow distribution. This balancing valve is commonly used in hydronic systems where accurate flow regulation is essential to ensure even heat distribution and system efficiency. It is particularly useful in multi-loop systems, where individual circuits need to be balanced independently. The valve integrates into both new installations and retrofit projects, allowing for adjustments after commissioning to compensate for system changes or performance drift.

Correct sizing and positioning of the valve are crucial for maintaining system balance. It is typically installed in accessible locations along the circuit to allow for manual adjustment and monitoring. The presence of fixed end members facilitates measurement without draining the system, which is beneficial during maintenance checks. The valve is not intended for high-pressure applications beyond its rated PN 25, making it suitable for standard domestic and light commercial systems.

Technical parameters

Installation and connection

Before installation, verify that the system media and operating conditions align with the valve’s specifications. The 3/4 inch connection requires compatible fittings or pipe threads to ensure a secure fit. Install the valve in a straight section of the pipe with sufficient clearance for access and operation. Ensure that the direction of flow matches the arrow marking on the body to prevent incorrect operation.

Compatibility and accessories

This valve is designed for use with water-based media and is compatible with standard heating and cooling system components. It works well with pressure-reducing valves and flow meters when integrated into a complete balancing system. Additional accessories such as isolation valves may be needed depending on the system configuration. No specific related products are listed for this model.

Technical background for designers

The valve operates by adjusting the restriction within the flow path to control the volume of fluid passing through. The brass CC752S construction offers good resistance to corrosion and wear, making it suitable for long-term use in closed-loop systems. The fixed end members allow for accurate flow measurement without interrupting the system cycle. System designers should consider the valve’s pressure drop characteristics and how it interacts with other components to avoid overloading the pump or creating flow imbalances. The valve’s performance is influenced by the viscosity of the media and the presence of particulate matter that could affect the sealing surface over time.

Service and operation

Periodic inspection is recommended to ensure the valve remains free of debris and operates smoothly. Check for signs of leakage around the stem and body. No specific service intervals are provided in the brief, but any irregularities in system performance should prompt a manual check of the valve’s setting and condition. The presence of fixed end members simplifies diagnostics without the need for draining the system.

Frequently asked questions

Can this valve be used in a closed-loop cooling system?
Yes, it is suitable for both heating and cooling systems provided the media and operating conditions match the specified parameters.

Is it possible to measure flow without removing the valve?
Yes, the fixed end members allow for flow measurement without draining the system, facilitating easier diagnostics and adjustments.

What is the maximum allowable temperature for this valve?
The upper limit is +120°C, beyond which the material and sealing integrity may be compromised.

Can the valve be used with glycol-based media?
Yes, provided the concentration and properties of the glycol solution are within the manufacturer’s approved specifications.