AB-QM Pressure Independent Control Valves (PICV) DN15 - DN250

Danfoss AB-QM family

Danfoss AB-QM was the first of its kind control valve for HVAC heating and cooling applications. It is a control valve with automatic flow limitation and built-in differential pressure control functioning over the control valve. The result of this concept is a high performing control valve with a – still - unique valve authority of 100%. The design flow can easily be set to the needed amount by using a 10% or 20% to 100% scale. Simply setting the design flow replaces traditional commissioning processes, gives a much more accurate control and avoids Kv calculations for system designers.

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When equipped with a Danfoss actuator, PICVs increase the energy efficiency and improve the indoor climate. The AB-QM is mainly used for air handling units, climate ceilings, fan-coil units and other terminal units in HVAC heating and cooling systems.

Features and benefits

Easy setting and sizing

Selecting the right AB-QM is much less complicated than sizing and selecting conventional control valves. Once the design flow is determined the matching AB-QM can be selected, no additional Kv and authority calculations are required.

100% authority

Having a 100% valve authority increases the control quality and precision, also at low flow requirements. This creates a better comfort in the building, as well as increasing the energy savings.

Perfect control

By providing the right flow at the right time, the AB-QM optimizes chiller and boiler efficiency and reduces pumping costs. In addition, the actuators need to make much less movements, increasing the lifetime value and lowering the Total Cost of Ownership.

AB-QM 4.0: We created PICVs - now we redefine the value

New: AB-QM 4.0

Get ready for the next level value of your PICV designs.

Documents

Documents
Type	Name	Language	Valid for	Updated	Download	File type
Brochure	AB-QM - Millions of reasons to choose the best	English	Multiple	02 May, 2018	5.0 MB	.pdf
Brochure	Energy saving solutions for renovation of heating and cooling systems	English	Multiple	10 Sept, 2014	5.9 MB	.pdf
Brochure	Hotel application brochure	English	Multiple	03 Sept, 2014	654.7 KB	.pdf
Application guide	HVAC Application guide	English	Multiple	26 Oct, 2020	19.4 MB	.pdf
Brochure	Hydronic Balancing & Control product overview	English	Multiple	12 Dec, 2016	1.1 MB	.pdf
Brochure	Hydronic Balancing & Control product overview	English	United Kingdom	11 Nov, 2014	7.1 MB	.pdf
Case story	NovoCon - outstanding HVAC flexibility after office building renovation	English	Multiple	28 Sept, 2020	960.1 KB	.pdf

Software

Danfoss SET 365 software

Our advanced Danfoss SET 365 3D design software will help you to design and calculate HVAC systems with Danfoss products. A 1-year subscription is FREE available for students, designers and other interested professionals.

Danfoss SET 365 software

Case studies

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HVAC control at Katowice business centre, Poland

Katowice Business Centre is a modern office building where Danfoss hydronic balancing solutions are used; AB-QM balancing and control valves in combination with revolutionary NovoCon® actuators.
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Energy comfort in Prime Tower, Zurich, Switzerland

The Prime Tower in Zurich is a building of many records. With its 126 meters it is the tallest building in Switzerland with 36 floors and 40,000 square meters accommodating mostly offices. And with its more than 6,000 AB-QM valves it is also one of the biggest heating and cooling installations ever designed and installed by Danfoss.
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Hydronic balancing in SAMBA bank head office, Riyadh, UAE

At the heart of the new King Abdullah Financial District in Riyadh stands the impressive SAMBA head office. The 40-storey building represents a landmark in sustainable architecture and engineering and forms an attractive work space for the 800 people working in the SAMBA Financial Group head office.
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Hydronic balancing in Burj Khalifa, Dubai, UAE

Burj Khalifa, the world’s tallest building, is located in Dubai, United Arab Emirates (UAE). With a staggering 160 floors, reaching 828 metres, the building takes your breath away. Burj Khalifa is not only a world famous skyscraper, but also a building complex in downtown Dubai with residential buildings, office buildings, hotels and shops.
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Balancing valves in Sky Tower, Wroclaw, Poland

The tallest building of the EU now resides in Wroclaw in Poland. As a beautiful landmark to modern architecture, high user comfort and sustainable practice, the 212 meter high Sky Tower forms the pleasant setting for thousands of people living and working in the building.

Videos

Danfoss AB-QM 4.0 – Engineering the best PICV valve for HVAC 4.0 in smart buildings

How to Implement Smart Hydronic HVAC Systems for Smart Buildings

Customer review video AB-QM PICV

Danfoss AB-QM 4.0 – Engineering the best PICV valve for HVAC 4.0 in smart buildings

Tender texts

AB-QM – Pressure Independent balancing and Control Valve (PICV)

The pressure independent balancing and control valve means that the control characteristic is independent from the available pressure. The precise flow control performance of the AB-QM with a Danfoss actuator provides increased comfort and superior Total Cost of Ownership. The AB-QM ensures and control the required flow on every terminal unit and maintains Hydronic balance in the system.

AB-QM has following features:

Flow limitation function
Modulating below 1% of set flow, regardless of the setting
Authority of 1 at all settings
Able to close against 16 bar of differential pressure
Linear control characteristic
Scale in percentage of flow
Control ratio 1:1000
Test plugs for pump optimization and flow verification for DN 15-250

Available in the range from DN 15 – 250 from one supplier.

Characteristic changed from linear to equal percentage characteristic at all sizes by adjusting actuator settings
Lockable setting
Starting pressure of 16 kPa for DN 15 – DN 20 LF and NF
Starting pressure of 20 kPa for DN 25 – DN 32 NF
Starting pressure of 25 kPa for DN 15 – DN 20 HF
Starting pressure of 30 kPa for DN 25 – DN 32 HF
Starting pressure of 30 kPa for DN 40 – DN 250
Leakage rate of no visible leakage for DN 15 - DN 20 in combination with recommended actuator
Leakage of 0.05 % of the Qnom for DN 25 - DN 100 in combination with recommended actuator
Leakage of 0.01 % of the Qnom for DN 125 - DN 250 in combination with recommended actuator

eBook Digital Hydronics™

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3D models and drawings

BIM library for MEP designs

Get your 3D BIM objects and start design HVAC 4.0 for smart buildings.

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Related products

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NovoCon® S Digital Actuator

With NovoCon® S Danfoss revolutionizes the way hydronic balancing and HVAC control work together. The first of its kind digital HVAC actuators are directly connected with a Building Management System (BMS). This enables System Integrators to design state-of-art, Internet of Things (IoT) solutions.
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AB-QM 4.0 Pressure Independent Control Valves (PICV) DN15 - DN32

AB-QM 4.0 Pressure Independent Control Valves (PICVs) are the successor of Danfoss AB-QM. They offer best-in-class specifications and easy installation. The scaling- and clogging resistant design secures and outstanding reliability and long lifetime. The required design flow can easily be established by turning the setting wheel on top of the valve to a presetting between 10-100% of the nominal flow. A wide variety of on/off, modulating and digital actuators is available to accurately control the flow through the valves.