Balancing valve Danfoss AB-QM 32 multifunctional, automatic 003Z1205

Danfoss AB-QM 32 balancing valve – precision and independence in HVAC systems.

The AB-QM valve is a multifunctional solution combining automatic flow balancing and precise regulation. Designed by Danfoss, it meets the needs of modern heating and cooling installations, providing optimal comfort and energy efficiency. The device is independent of pressure changes in the installation, which translates to stable operation and minimizes the impact of disturbances on user comfort. This is particularly important in systems with variable flow, where maintaining constant operating parameters is crucial.

The AB-QM valve finds application in air handling units, chilled beams, fan coil units and other end devices of HVAC systems. Thanks to its precise flow regulation characteristics, the valve allows for balancing the system and maintaining optimal conditions in each room. Its construction allows for operation in systems with both constant and variable flow.

Construction and characteristic features

The AB-QM valve is characterized by a solid construction made of dezincification resistant brass (DZR), which guarantees long-lasting and trouble-free operation. Made of high-quality materials, it provides resistance to corrosion and mechanical damage. The actuator connection with dimensions of M30 x 1.5 ensures easy mounting with dedicated Danfoss actuators. The working length of the valve is 130 mm, and the nominal diameter is DN 32. It is worth noting the linear regulation characteristic and the possibility of limiting the valve stroke, which allows for precise adjustment to the specific requirements of the installation. The maximum working pressure difference is 30 kPa with a minimum pressure difference of 20 kPa.

The valve is adapted to work with glycol and water liquids. Thanks to its construction, it ensures minimal medium leakage (0.05% Qnom for DN 25 - DN 100 in combination with the recommended actuator), which translates to operational savings and minimizes the risk of failure. The setting lock additionally protects against accidental changes in settings.

Advantages of use

• Precise flow regulation: Maintaining a constant flow regardless of pressure changes in the installation ensures stable thermal comfort and optimal energy consumption.
• Versatility: The ability to use in systems with both constant and variable flow makes the valve a universal solution for different types of HVAC installations.
• Ease of selection: Selecting the appropriate valve size is simple and does not require complicated hydraulic calculations – just determine the required design flow.
• Durability: Construction from dezincification resistant brass guarantees long-lasting and trouble-free operation of the valve even in difficult operating conditions.
• Compatibility: The AB-QM valve works with a wide range of Danfoss actuators (electric, thermal), providing flexibility in choosing the appropriate control solution.
• Energy saving: Precise flow regulation allows for optimization of the operation of the heating or cooling system, which translates to lower operating costs.
• Automatic balancing: The automatic flow balancing function eliminates the need for manual adjustment of balancing valves, which greatly facilitates the commissioning and maintenance of the installation.

The Danfoss AB-QM 32 valve is an investment in comfort, energy efficiency and reliability of the HVAC system – a solution appreciated by industry professionals and end users.