Pressure-independent regulating valve AB-QM, DN15 without measuring connections, Male thread. Nominal flow rate 1200 l/h 003Z8222

Pressure-independent regulating valve – precision and savings in HVAC systems

The Danfoss AB-QM 4.0 pressure-independent regulating valve is an advanced solution for heating and cooling systems, ideal for use in fan coil units, chilled beams and other terminal units. Its unique design with a 100% authority ensures unparalleled flow control performance, which translates to optimal comfort and lower operating costs. This model, with a nominal diameter of DN15 and an external thread, offers a nominal flow rate of up to 1200 l/h.

The AB-QM 4.0 valve is primarily distinguished by its independence from changes in pressure in the installation. This means that the control characteristic remains constant, regardless of the system operating conditions. This allows for precise control of heat or cool flow, which directly affects the energy efficiency of the building. The valve design is resistant to scale and dirt build-up, guaranteeing long-term reliability and minimizing maintenance requirements.

Why choose Danfoss AB-QM 4.0?

• Precise regulation: The valve's 100% authority ensures accurate flow control even with low performance requirements.
• Pressure independence: Stable control characteristic guarantees optimal system operation regardless of pressure changes in the installation.
• Durability and reliability: Design resistant to scale and dirt build-up ensures long valve life and minimizes service costs.
• Ease of settings: The ability to pre-set the flow in the range of 10-100% makes it easy to configure the system and adapt it to individual needs.
• Versatility: Available with a metric external thread, making it easy to integrate with different types of installations.
• Compatibility: Works perfectly with the Danfoss NovoCon S digital actuator, providing even greater control precision.

The AB-QM 4.0 valve is an investment in comfort, energy efficiency and long-term reliability of the HVAC system. Its advanced design and precise operation make it an ideal solution for both professional installers and end-users looking for optimal solutions for their heating and cooling needs. A pressure class of PN 25 ensures safe operation even in demanding working conditions. A stroke length of 4 mm allows for precise adjustment of the flow to the current needs of the system. The actuator connection M30 x 1.5 enables easy mounting of compatible actuators.