Maddock Industries represents Danfoss who is a leading manufacturer in industrial machinery aiming to innovate and engineer solutions to create a more sustainable and healthier world.

AB-QM Pressure Independent Control Valves (PICVs) by Danfoss increase energy efficiency and room temperature control, thereby improving indoor climate conditions.

Let the hydronics experts at Maddock Industries determine if Danfoss PICVs are right for your applications.

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Overview Video

AB-QM Pressure Independent Control Valves

AB-QM is a pressure independent control valve with a built-in, integrated differential pressure regulator. This Danfoss design allows the valve to be selected via required flow versus traditional Cv calculations. AB-QM features include:
Pressure independent control valves (PICVs)

  • Mechanical pressure independent technology: integrated differential pressure regulator for exceptional flow control
  • Easy setting and sizing: less complicated than sizing and selecting conventional control valves, and no Cv calculations are required
  • Wide range of valve sizes: valves are available in ½” through 10”, covering a wide variety of HVAC applications
  • Field adjustable flow setting: no tools are required for the ½” to 1-¼” valves. Simply lift, rotate, and lock valve adjustment knob on your required flow setting
  • Tight close-off/clog resistant: unique two-stage close off resists debris

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