AB-PM differential pressure control valves

Danfoss differential pressure control valve AB-PM

Danfoss AB-PM combined dynamic balancing valves ensure a reliable HVAC system with low total cost of ownership. The valve secures perfect balance at all loads by guaranteeing stable flow and differential pressure for each zone. At the same time an actuator can be added to allow individual control of each zone. This provides an exceptional solution in two main applications:

Residential buildings (Multi Family Housing) with two-pipe heating systems with distribution systems in front of each flat, such as manifolds for hydronic floor heating
Commercial buildings (Shell & Core) where the HVAC systems are established in stages or by different parties.

In case of residential applications, the AB-PM is mostly used in sizes DN10-32, ensuring hydronic balance for each flat e.g. in front of manifold for floor heating installations. The optional connection to a room temperature controller allow feature for each flat such as night setback or holiday mode.

In case of commercial HVAC applications, the AB-PM is mostly used in sizes DN 40-100. The dynamic balancing valve can be used in shell & core buildings such as shopping malls or offices, ensuring a reliable heating system for the building owner and tenants. AB-PM is the ideal solution for such type of buildings as staged installation, handover and commissioning often occur. In such cases, the 1st stage is installation of backbone piping without terminal units (responsible building owner). The 2nd stage is the installation of terminal units in each zone (responsible tenant).

The AB-PM ensure the required flow for each zone and maintains the hydronic balance in the system in all conditions and for individual zones either with one or more terminal units.

Danfoss AB-PM in residential building with actuator

Features and benefits

Many features in one compact valve
Combined balancing valve for differential pressure control, flow limitation and zone control
Guarantees flow and Δp for each zone
Easy, fast and simple design process
Fast installation and easy setting

AB-PM connection sets

For residential applications, the Danfoss AB-PM connections sets are a compact and time saving solution for installing in front of each flat or manifold in hydronic heating systems. It is the best answer for a reliable system with proper distribution of flow and differential pressure both at full load and partial load conditions. Using the AB-PM connection sets, the installation is prepared for fast and easy heat meter installation just by removing the replacement piece. The dedicated design of the sets with ball valves for easy shutoff enables safe commissioning, servicing and maintenance of the manifold heating system.

Floor heating animation

See the animation demonstrating the use of AB-PM in a hydronic floor heating system.

Animated instructions for small DN sizes

Watch animated instructions to see how to install AB-PM.

Documents

Documents
Type	Name	Language	Valid for	Updated	Download	File type
Brochure	AB-PM - HVAC control for shell and core and base buildings	Polish	Multiple	18 Feb, 2019	1.3 MB	.pdf
Brochure	AB-PM - HVAC control for shell and core and base buildings	German	Multiple	05 Aug, 2018	539.5 KB	.pdf
Brochure	AB-PM - HVAC control for shell and core and base buildings	English	Multiple	12 Mar, 2018	629.4 KB	.pdf
Brochure	AB-PM - HVAC control for shell and core and base buildings	Slovak	Slovakia	22 Mar, 2021	2.9 MB	.pdf
Data sheet	AB-PM (DN 10-32)	Estonian	Multiple	14 Sep, 2022	2.2 MB	.pdf
Data sheet	AB-PM (DN 10-32)	Romanian, Moldavian, Moldovan	Multiple	14 Sep, 2022	2.3 MB	.pdf
Data sheet	AB-PM (DN 10-32)	Chinese	Multiple	14 Sep, 2022	2.3 MB	.pdf
Data sheet	AB-PM (DN 10-32)	Ukrainian	Ukraine	23 Sep, 2024	1.5 MB	.pdf
Data sheet	AB-PM (DN 10-32)	Latvian	Multiple	14 Sep, 2022	2.2 MB	.pdf
Data sheet	AB-PM (DN 10-32)	Turkish	Multiple	14 Sep, 2022	2.2 MB	.pdf
Data sheet	AB-PM (DN 10-32)	Czech	Multiple	14 Sep, 2022	2.2 MB	.pdf
Data sheet	AB-PM (DN 10-32)	Finnish	Multiple	03 Jun, 2025	1.9 MB	.pdf
Data sheet	AB-PM (DN 10-32)	Swedish	Multiple	14 Sep, 2022	2.2 MB	.pdf
Data sheet	AB-PM (DN 10-32)	French	Multiple	14 Sep, 2022	2.2 MB	.pdf
Data sheet	AB-PM (DN 10-32)	Danish	Multiple	14 Sep, 2022	2.2 MB	.pdf
Data sheet	AB-PM (DN 10-32)	German	Multiple	14 Sep, 2022	2.3 MB	.pdf
Data sheet	AB-PM (DN 10-32)	Spanish, Castilian	Multiple	14 Sep, 2022	2.2 MB	.pdf
Data sheet	AB-PM (DN 10-32)	Hungarian	Multiple	14 Sep, 2022	2.3 MB	.pdf
Data sheet	AB-PM (DN 10-32)	Lithuanian	Multiple	14 Sep, 2022	2.2 MB	.pdf
Data sheet	AB-PM (DN 10-32)	English	Multiple	14 Jul, 2022	1.8 MB	.pdf
Data sheet	AB-PM (DN 10-32)	Polish	Multiple	13 Feb, 2019	1.2 MB	.pdf
Data sheet	AB-PM (DN 40-100)	English	Multiple	06 Mar, 2018	1.8 MB	.pdf
Data sheet	AB-PM (DN 40-100)	French	Multiple	13 Aug, 2018	1.7 MB	.pdf
Data sheet	AB-PM (DN 40-100)	Spanish, Castilian	Multiple	11 Apr, 2019	1.9 MB	.pdf
Data sheet	AB-PM (DN 40-100)	Polish	Multiple	13 Aug, 2018	1.7 MB	.pdf
Data sheet	AB-PM (DN 40-100)	Estonian	Multiple	13 Aug, 2018	1.7 MB	.pdf
Data sheet	AB-PM (DN 40-100)	Lithuanian	Multiple	13 Aug, 2018	1.7 MB	.pdf
Data sheet	AB-PM (DN 40-100)	Finnish	Multiple	13 Aug, 2018	1.7 MB	.pdf
Data sheet	AB-PM (DN 40-100)	Romanian, Moldavian, Moldovan	Multiple	13 Aug, 2018	1.7 MB	.pdf
Data sheet	AB-PM (DN 40-100)	Italian	Multiple	13 Aug, 2018	1.7 MB	.pdf
Data sheet	AB-PM (DN 40-100)	Swedish	Multiple	13 Aug, 2018	1.7 MB	.pdf
Data sheet	AB-PM (DN 40-100)	Hungarian	Multiple	11 Apr, 2019	1.9 MB	.pdf
Data sheet	AB-PM (DN 40-100)	German	Multiple	19 Dec, 2019	2.3 MB	.pdf
Data sheet	AB-PM (DN 40-100)	Czech	Multiple	13 Aug, 2018	1.9 MB	.pdf
Data sheet	AB-PM (DN 40-100)	Turkish	Multiple	13 Aug, 2018	1.7 MB	.pdf
Data sheet	AB-PM (DN 40-100)	Latvian	Multiple	13 Aug, 2018	1.7 MB	.pdf
Brochure	AB-PM connection sets Product leaflet	Czech	Czech Republic	03 May, 2022	2.3 MB	.pdf
Brochure	AB-PM connection sets Product leaflet	Slovak	Slovakia	28 Jan, 2021	932.0 KB	.pdf
Brochure	AB-PM connection sets Product leaflet	German	Multiple	09 Nov, 2020	1.4 MB	.pdf
Brochure	AB-PM connection sets Product leaflet	English	Multiple	27 Oct, 2020	417.9 KB	.pdf
Brochure	AB-PM rack set Product leaflet	English	Multiple	05 Nov, 2020	376.7 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

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3D models and drawings

BIM library for MEP designs

Get your 3D BIM objects and start design dynamic HVAC solutions.

Articles

How to balance HVAC systems in “Shell and Core buildings”

Shell & Core buildings – larger buildings split in smaller zones for rental purpose – such as office buildings or shopping malls are rapidly gaining in popularity. The design and commissioning of the HVAC system in such buildings requires another approach. If this is not taken into account issues like a long handover time, an over-dimensioned and unreliable system will occur.

Tender texts

AB-PM (DN10-32) – Combined Automatic Balancing Valve

Branch should be balanced with a differential pressure controller for dynamic hydronic balance, with following characteristics:

Valve should keep differential pressure across the branch by membrane driven controller.
Valve should have shut-off function.
Valve should have possibility to mount actuator.
Valve should have variable setting. Setting value should allow to set a combination of needed Dp and max flow limitation.
Setting should be lockable to prevent unauthorized change.
Valve should have metal to metal sealing to ensure sufficient performance of differential pressure control at low flows.
Shut-off service function should be possible to do by hand / without a tool.
Valve should be delivered with impulse tube. Diameter of impulse tube should not be bigger than 1.2 mm.
Valve should be delivered in reliable packaging for safe transport and handling.

Product characteristics:

Pressure class: PN 16
Temperature range: −10 … +120 °C.
Connection size: DN10-DN32
Connection type: External thread ISO 228/1
Valve body material: DZR brass
Installation: on flow pipe with connection via impulse tube to return pipe.

DN10-32:

Dp setting range: 5-15 kPa
Nom flow at 10 kPa: 110 l/h (DN10), 300 l/h (DN15), 600 l/h (DN20), 1200 l/h (DN25) and 2300 l/h (DN32)
Minimum Dp across valve and loop 18 kPa to ensure proper control
Max Dp at zero flow: 22 kPa
Max Dp across the valve: 4 bar

DN10-32 HP:

Dp setting range: 10-25 kPa
Nom flow at 20 kPa: 110 l/h (DN10), 300 l/h (DN15), 600 l/h (DN20), 1200 l/h (DN25) and 2300 l/h (DN32)
Minimum Dp across valve and loop 28 kPa to ensure proper control
Max Dp at zero flow: 35 kPa
Max Dp across the valve: 4 bar

AB-PM (DN40-100) – Combined Automatic Balancing Valve

AB-PM DN 40-100 is a combined differential pressure controller for dynamic hydronic balance.

The valve should be able to ensure hydronic balance for each zone with one or more terminal units.
Valve shall have flexible functionality as either DPCV or PIBCV.
The valve can be connected to either flow or return pipe via impulse tube
With impulse tube connected to flow, the valve should keep differential pressure across the branch by membrane driven controller.
With impulse tube connected to the return, the valve should control the flow on every terminal unit
Valve should have shut-off function.
Valve should have possibility to mount actuator.
Valve should have variable setting.
Setting value should allow to set a combination of needed differential pressure and flow for zone.
Setting should be lockable to prevent unauthorized change.
Control valve should have metal to metal sealing to ensure sufficient performance of differential pressure control at low flows.
Shut-off service function should be possible to do with hand or a tool. The Dp controller should have soft sealing to ensure sufficient closing in case of zero flow
Valve should be delivered with min. 2.5 m impulse tube. Diameter of impulse tube should not be bigger than 1.2 mm.
Valve should be delivered in reliable packaging for safe transport and handling.

Product characteristics:

Pressure class: PN16
Max. pressure drop across AB-PM: 4 bar
Temperature range: –10 … 120 °C
Connections size: DN 40-100
Connection type: External tread ISO 228/1 (DN 40, DN50), Flange EN1092-2 (DN 65-100)
Installation: in return pipe with connection via impulse tube to flow or return pipe
Setting range: Flow: 40-100%, Δp setting : 0-20 turns (DN40, DN50), 0-40 turns (DN65-DN100)
Nom. flow at factory setting (Δpr 25 kPa): 5000l/h (DN40), 6500 l/h (DN50), 16800 l/h (DN65), 19600 (DN80), 21000 (DN100)
Minimum differential pressure across valve and zone 42 kPa (DN40, DN50), 60 kPa (DN65-100)

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