Meet the Danfoss AB-QM 4.0 – the future of pressure-independent control valves
At DMS Metering Solutions, we’re always on the lookout for products that deliver on performance, reliability, and future-ready innovation. That’s why we’re excited to showcase the Danfoss AB-QM 4.0—the latest evolution in pressure-independent control valves (PICVs) for HVAC heating and cooling systems.
Building on Proven Performance
The AB-QM 4.0 takes everything that made the original AB-QM a market leader—such as automatic flow limitation, 100% valve authority, and an integrated differential pressure controller—and enhances it with smarter, more flexible functionality for today’s dynamic building environments.
Versatility Meets Precision
Designed for versatility, the AB-QM 4.0 is available in sizes ranging from DN15 to DN32, with screwed connections (internal or external thread) and options for models with or without test plugs. Its broad flow capacity—from 20 l/h to 5,000 l/h—caters to a wide array of project requirements.
Thanks to Bluetooth connectivity via the PFM 1000 instrument, installers and technicians can easily measure flow rates on both iOS and Android devices, simplifying commissioning and maintenance.
Engineered for Reliability
Whether you’re designing, installing, or operating an HVAC system, the AB-QM 4.0 brings real-world benefits:
Clogging-resistant design for reduced maintenance
Nominal pressure rating of PN25
Bi-directional filling and flushing
Accurate flow measurement, even in demanding conditions
These features combine to create a PICV that’s not just powerful, but also practical.
Optimised for Energy Efficiency
The AB-QM 4.0 excels in controlling terminal units such as fan-coil units, chilled beams, and climate ceilings, delivering superior energy efficiency and indoor comfort. When paired with Danfoss actuators, it provides precise room temperature control.
For those looking to future-proof their HVAC systems, the AB-QM 4.0 can also be combined with the NovoCon S digital actuator, enabling IoT connectivity and smart building integration—ideal for modern HVAC 4.0 applications.
Key Features:
-Connection Size: 15–32mm
-Connection Type: Screwed (internal/external thread)
-Flow Range: 20–5,000 l/h
-Smart Connectivity: PFM 1000 via Bluetooth (iOS & Android)
-Compatibility: Danfoss actuators & NovoCon S digital actuator
-Application: Terminal units – FCUs, chilled beams, climate ceilings
Ready to upgrade your HVAC system with the next generation of control?
Watch our most recent YouTube Video where our Technical Manager, David Mortimer, discusses the Danfoss AB-QM 4.0 in greater detail: https://youtu.be/9q6eXsWJ9oI
Get in touch with our team at DMS Metering Solutions to find out how the Danfoss AB-QM 4.0 can elevate your project.
01773 534 555 | meters@dmsltd.com
