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
Data sheet	AB-QM 4.0 / AB-QM Pressure Independent Control Valves (PICV)	Lithuanian	Multiple	10 Apr, 2025	3.4 MB	.pdf
Data sheet	AB-QM 4.0 / AB-QM Pressure Independent Control Valves (PICV)	Slovak	Multiple	10 Apr, 2025	3.4 MB	.pdf
Data sheet	AB-QM 4.0 / AB-QM Pressure Independent Control Valves (PICV)	Serbian (RS)	Multiple	10 Apr, 2025	3.4 MB	.pdf
Data sheet	AB-QM 4.0 / AB-QM Pressure Independent Control Valves (PICV)	Slovenian	Multiple	10 Apr, 2025	3.4 MB	.pdf
Data sheet	AB-QM 4.0 / AB-QM Pressure Independent Control Valves (PICV)	Chinese (CN)	Multiple	10 Apr, 2025	3.5 MB	.pdf
Data sheet	AB-QM 4.0 / AB-QM Pressure Independent Control Valves (PICV)	German	Multiple	11 Apr, 2025	3.4 MB	.pdf
Data sheet	AB-QM 4.0 / AB-QM Pressure Independent Control Valves (PICV)	Turkish	Multiple	10 Apr, 2025	3.4 MB	.pdf
Data sheet	AB-QM 4.0 / AB-QM Pressure Independent Control Valves (PICV)	Ukrainian	Ukraine	24 Feb, 2023	4.1 MB	.pdf
Data sheet	AB-QM 4.0 / AB-QM Pressure Independent Control Valves (PICV)	Swedish	Multiple	10 Apr, 2025	3.4 MB	.pdf
Data sheet	AB-QM 4.0 / AB-QM Pressure Independent Control Valves (PICV)	Latvian	Multiple	10 Apr, 2025	3.4 MB	.pdf
Data sheet	AB-QM 4.0 / AB-QM Pressure Independent Control Valves (PICV)	Portuguese	Multiple	10 Apr, 2025	3.4 MB	.pdf
Data sheet	AB-QM 4.0 / AB-QM Pressure Independent Control Valves (PICV)	Hungarian	Multiple	10 Apr, 2025	3.3 MB	.pdf
Data sheet	AB-QM 4.0 / AB-QM Pressure Independent Control Valves (PICV)	Dutch, Flemish	Multiple	10 Apr, 2025	3.4 MB	.pdf
Data sheet	AB-QM 4.0 / AB-QM Pressure Independent Control Valves (PICV)	Spanish, Castilian	Multiple	11 Apr, 2025	3.4 MB	.pdf
Data sheet	AB-QM 4.0 / AB-QM Pressure Independent Control Valves (PICV)	Korean	Multiple	11 Apr, 2025	3.6 MB	.pdf
Data sheet	AB-QM 4.0 / AB-QM Pressure Independent Control Valves (PICV)	English	Multiple	22 Nov, 2024	3.4 MB	.pdf
Data sheet	AB-QM 4.0 / AB-QM Pressure Independent Control Valves (PICV)	Norwegian Bokmål	Multiple	10 Apr, 2025	3.3 MB	.pdf
Data sheet	AB-QM 4.0 / AB-QM Pressure Independent Control Valves (PICV)	Polish	Multiple	17 Jun, 2025	3.4 MB	.pdf
Data sheet	AB-QM 4.0 / AB-QM Pressure Independent Control Valves (PICV)	Finnish	Multiple	10 Apr, 2025	3.4 MB	.pdf
Data sheet	AB-QM 4.0 / AB-QM Pressure Independent Control Valves (PICV)	Bulgarian	Multiple	10 Apr, 2025	3.3 MB	.pdf
Data sheet	AB-QM 4.0 / AB-QM Pressure Independent Control Valves (PICV)	Estonian	Multiple	10 Apr, 2025	3.4 MB	.pdf
Data sheet	AB-QM 4.0 / AB-QM Pressure Independent Control Valves (PICV)	Czech	Multiple	10 Apr, 2025	3.4 MB	.pdf
Data sheet	AB-QM 4.0 / AB-QM Pressure Independent Control Valves (PICV)	Danish	Multiple	10 Apr, 2025	3.4 MB	.pdf
Data sheet	AB-QM 4.0 / AB-QM Pressure Independent Control Valves (PICV)	Italian	Multiple	10 Apr, 2025	3.4 MB	.pdf
Data sheet	AB-QM 4.0 / AB-QM Pressure Independent Control Valves (PICV)	French	Multiple	10 Apr, 2025	3.4 MB	.pdf
Data sheet	AB-QM 4.0 / AB-QM Pressure Independent Control Valves (PICV)	Croatian	Multiple	10 Apr, 2025	3.3 MB	.pdf
Data sheet	AB-QM 4.0 / AB-QM Pressure Independent Control Valves (PICV)	Romanian, Moldavian, Moldovan	Multiple	10 Apr, 2025	3.4 MB	.pdf
Brochure	AB-QM 4.0 Introduction leaflet	Polish	Poland	01 Jul, 2020	701.7 KB	.pdf
Brochure	AB-QM 4.0 Introduction leaflet	German	Multiple	15 Oct, 2019	390.5 KB	.pdf
Brochure	AB-QM 4.0 Introduction leaflet	Romanian, Moldavian, Moldovan	Romania	31 Aug, 2020	1.2 MB	.pdf
Brochure	AB-QM 4.0 Introduction leaflet	Hungarian	Hungary	04 Nov, 2020	443.7 KB	.pdf
Brochure	AB-QM 4.0 Product leaflet	Dutch, Flemish	Netherlands	25 Jun, 2020	465.1 KB	.pdf
Brochure	AB-QM 4.0 Product leaflet	French	France	11 Sep, 2020	1.6 MB	.pdf
Brochure	AB-QM 4.0 Product leaflet	German	Germany	15 Apr, 2020	489.0 KB	.pdf
Brochure	AB-QM 4.0 Product leaflet	English	Multiple	07 Nov, 2022	680.9 KB	.pdf
Brochure	AB-QM 4.0 Product leaflet	Slovak	Slovakia	26 Mar, 2021	624.5 KB	.pdf
Brochure	AB-QM Actuator Selection Infographic - UK	English	United Kingdom	15 Jan, 2021	8.6 MB	.pdf
Application guide	Application guide	Italian	Italy	07 Mar, 2021	10.1 MB	.pdf
Application guide	Application leaflet	Lithuanian	Lithuania	18 May, 2021	19.0 MB	.pdf
Brochure	Energy saving solutions for renovation of heating and cooling systems	English	Multiple	10 Sep, 2014	5.9 MB	.pdf
Brochure	Energy saving solutions for renovation of heating and cooling systems	Polish	Multiple	19 Feb, 2019	5.9 MB	.pdf
Brochure	Energy saving solutions for renovation of heating and cooling systems	Romanian, Moldavian, Moldovan	Romania	01 Sep, 2014	6.4 MB	.pdf
Brochure	Energy saving solutions for renovation of heating and cooling systems	Hungarian	Hungary	01 Sep, 2014	6.4 MB	.pdf
Brochure	Hotel application brochure	English	Multiple	03 Sep, 2014	654.7 KB	.pdf
Brochure	Hotel application brochure	Spanish, Castilian	Spain	12 May, 2015	10.8 MB	.pdf
Application guide	HVAC Application guide	Spanish, Castilian	Spain	02 Feb, 2022	8.7 MB	.pdf
Application guide	HVAC Application guide	English	Multiple	26 Oct, 2020	19.4 MB	.pdf
Application guide	HVAC Application guide	Polish	Poland	14 Jun, 2021	11.3 MB	.pdf
Application guide	HVAC Application guide	Latvian	Latvia	21 Apr, 2021	20.2 MB	.pdf
Application guide	HVAC Application guide	Czech	Czech Republic	18 Nov, 2014	7.3 MB	.pdf
Application guide	HVAC Application guide 2021	Hungarian	Hungary	21 Sep, 2021	11.7 MB	.pdf
Brochure	Infographic - Actuator selection for AB-QM PICVs	Czech	Czech Republic	18 Feb, 2021	3.4 MB	.pdf
Brochure	Infographic - Actuator selection for AB-QM PICVs	Chinese (CN)	Taiwan	06 May, 2025	3.2 MB	.pdf
Brochure	Infographic - Actuator selection for AB-QM PICVs	Polish	Poland	09 Jun, 2021	2.3 MB	.pdf
Brochure	Infographic - Actuator selection for AB-QM PICVs	English	Multiple	17 Sep, 2024	3.4 MB	.pdf
Brochure	Infographic - Actuator selection for AB-QM PICVs	Ukrainian	Ukraine	15 Aug, 2023	2.1 MB	.pdf
Brochure	Infographic - Actuator selection for PICVs	Dutch, Flemish	Netherlands	20 Feb, 2025	3.1 MB	.pdf
Brochure	Infographic - Actuators for AB-QM PICVs	German	Multiple	09 Mar, 2023	7.0 MB	.pdf
Brochure	Infographic AB-QM 4.0 compared to AB-QM	Ukrainian	Ukraine	11 Aug, 2023	1.3 MB	.pdf
Brochure	Infographic AB-QM 4.0 compared to AB-QM	Dutch, Flemish	Netherlands	02 Jun, 2023	4.3 MB	.pdf
Brochure	Infographic AB-QM 4.0 compared to AB-QM	Italian	Italy	15 Nov, 2022	628.4 KB	.pdf
Brochure	Infographic AB-QM 4.0 compared to AB-QM	German	Multiple	06 Mar, 2023	6.5 MB	.pdf
Brochure	Infographic AB-QM 4.0 compared to AB-QM	Czech	Czech Republic	18 Feb, 2021	5.3 MB	.pdf
Brochure	Infographic AB-QM 4.0 compared to AB-QM	Polish	Poland	21 Apr, 2022	5.5 MB	.pdf
Brochure	Infographic AB-QM 4.0 compared to AB-QM	Serbian (RS)	Serbia	30 Aug, 2021	9.0 MB	.pdf
Brochure	Infographic AB-QM 4.0 compared to AB-QM	English	Multiple	07 Nov, 2022	2.3 MB	.pdf
Brochure	Infographic How AB-QM 4.0 redefines the value of PICVs	French	Multiple	20 Oct, 2020	2.1 MB	.pdf
Brochure	Interactive actuator selection guide for Danfoss AB-QM valves	Finnish	Finland	20 Aug, 2024	2.6 MB	.pdf
Case story	NovoCon - outstanding HVAC flexibility after office building renovation	English	Multiple	28 Sep, 2020	960.1 KB	.pdf
Application guide	Planner Manual Hydraulic	German	Multiple	01 Apr, 2021	16.5 MB	.pdf

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4* resort increases guest ratings and saves on heat pump energy costs

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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 10-250

Available in the range from DN 10 – 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 10 – DN 20
Starting pressure of 20 kPa for DN 25 – DN 32
Starting pressure of 30 kPa for DN 40 – DN 250
Leakage rate of no visible leakage for DN 10 - 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