Danfoss AB-QM Pressure Independent Control Valve
Danfoss AB-QM Pressure Independent Control Valve
The Danfoss AB-QM is a Pressure Independent Control Valve (PICV) for HVAC systems. It combines an integrated differential pressure regulator and flow limitation, making sizing easy and balancing automatic. It delivers consistent flow to terminal units, increases comfort and energy efficiency, and simplifies commissioning
Product Description
Key Features & Benefits
100% Valve Authority
Unique 100% authority ensures precise control at all flow rates, guaranteeing comfort and maximizing energy savings.
Automatic Balancing & Easy Sizing
Eliminates complex Kv calculations. Simply select based on design flow and set on the 10-100% scale.
Perfect Flow Control
Delivers the exact required flow to each terminal unit, optimizing chiller/boiler efficiency and reducing pump energy.
Energy & Cost Savings
Reduces overall system energy use, minimizes actuator wear (fewer movements), and lowers total cost of ownership.
Simplified Commissioning
Replaces lengthy manual balancing; setting the design flow is the only commissioning step required.
Technical Specifications
Size Range
DN15 – DN250
Key Function
Pressure Independent Balancing & Control Valve (PICV)
Setting Scale
10% or 20% to 100% of max. flow
Actuator Compatibility
Designed for use with Danfoss actuators (e.g., for 2-point or modulating control).
Installation & Control
Terminal Unit Connection
Installed at the inlet of terminal units like FCUs, AHUs, or climate ceilings.
Simple Flow Setting
The design flow is set manually using the adjustment dial on the valve body.
Actuator Integration
An actuator (sold separately) is mounted on top for automatic control via room thermostat or BMS.
Design Software Support
Can be sized and integrated into system designs using the free Danfoss SET 365 software.
Use Cases
- Fan Coil Units (FCUs)
- Air Handling Units (AHUs)
- Chilled Beams & Climate Ceilings
- Hospital & Laboratory HVAC
Product brochure
User Manual
Related Products
Related products
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Danfoss AB-QM 4.0
- BTU Meters
Danfoss SonoSensor™ 30
- BTU Meters
Danfoss SonoSelect 10



