80+ Years of Sustainability
Danfoss has been engineering innovations designed to enhance comfort & save energy for over 80 years. Learn more about our sustainable building technology like AB-QM™ in our Sustainable Buildings video below...
Simple, Affordable, Comfort.
Pressure independent control excellence from the global market leader for over 30 years.
Discover how Danfoss AB-QM™ Pressure independent control valves (PICVs) can improve system efficiency by eliminating overflows and increasing ΔT.
What is Danfoss AB-QM™ ?
AB-QM™ is a pressure independent control valve with a built-in, integrated differential pressure regulator. The unique design allows the valve to be selected via required flow versus traditional Cv calculations.
When equipped with a perfectly matched Danfoss electric actuator, AB-QM™ PICVs increase energy efficiency & room temperature control, improving indoor climate conditions. PICVs are typically found in HVAC heating and cooling systems.
Typical AB-QM™ PICV applications include:
- air handling units
- climate ceilings
- variable air volume boxes
- fan-coil units
- terminal units
AB-QM™ Features & Benefits
Mechanical pressure independent technology
Integrated differential pressure regulator for exceptional flow control.
Easy setting and sizing
Selecting the right AB-QM™ is much 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.
Learn more about Danfoss AB-QM™ valves
Watch a brief overview of Danfoss AB-QM™ pressure independent control valves, see how they work, and how they can help optimize your HVAC system.
½" - 10" Valves
1.2 - 1600 GPM
Choice of pipe connections:
- ½" - 2"
- Male NPT
- Female NPT (¾" & 1")
- Female Sweat
- 2½" - 10"
- ANSI Flange
To take advantage of the combined balancing and control features of Danfoss AB-QM it has to be equipped with actuators controlled by room thermostats or a Building Management System. Danfoss offers a broad range of actuators varying from thermal on-off, to digital actuators with bus communication.
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.
|Type||Name||Language||Valid for||Updated||Download||File type|
|Brochure||AB-QM Brochure - Design Center Flyer||English||United States||04 Nov, 2015||381.6 KB|
|Brochure||AB-QM Brochure - General||English||United States||26 Apr, 2015||4.2 MB|
|Brochure||AB-QM Brochure - Hospitals||English||United States||22 Jun, 2015||2.3 MB|
|Brochure||AB-QM Brochure - NovoCon S Digital Actuator||English||United States||31 Aug, 2017||3.0 MB|
|Brochure||AB-QM Brochure - Universities||English||United States||04 Nov, 2015||809.5 KB|
|Tender text||AB-QM Specification Sheet - Building Control and Automation System (Section 25 10 00)||English||Multiple||25 May, 2020||441.7 KB|
|Tender text||AB-QM Specification Sheet - HVAC Piping (Section 23 21 13)||English||Multiple||25 May, 2020||368.9 KB|
|Tender text||AB-QM Specification Sheet - Simple||English||Multiple||25 May, 2020||114.8 KB|
|Data sheet||AB-QM Valve Datasheet, 1/2" to 10"||English||United States||16 Jun, 2020||3.3 MB|
|Fact sheet||AB-QM Valve High Flow ISO Flange Submittal VLA7H122||English||United States||18 Mar, 2012||75.9 KB|
|Installation guide||AB-QM Valve Installation - ½" to 2"||English||United States||30 Apr, 2012||2.3 MB|
|Installation guide||AB-QM Valve Installation - 1/2" to 1-1/4"||English||United States||31 Mar, 2015||1.0 MB|
|Installation guide||AB-QM Valve Installation - 2½" to 4"||English||United States||30 Nov, 2014||1.2 MB|
|Installation guide||ABQM Valve Installation - 5" to 10", ANSI||English||United States||31 May, 2011||813.8 KB|
|Installation guide||ABQM Valve Installation - 5" to 10", High Flow||English||United States||31 Jan, 2016||1.2 MB|
|Fact sheet||AB-QM Valve Neck Version Distinction||English||Multiple||31 Jul, 2013||88.3 KB|
|Fact sheet||AB-QM Valve Submittal - 1.5" to 2"||English||United States||02 Jan, 2012||119.4 KB|
|Fact sheet||AB-QM Valve Submittal - 1/2" to 1-1/4" (Gen. 3)||English||United States||31 Jan, 2016||35.5 KB|
|Fact sheet||AB-QM Valve Submittal - 2.5" to 4"||English||United States||30 Jun, 2017||238.6 KB|
|Fact sheet||AB-QM Valve Submittal - 2.5" to 4" High Flow||English||Multiple||31 Mar, 2020||167.5 KB|
|Fact sheet||AB-QM Valve Submittal - 5" to 10", High Flow||English||United States||30 Jun, 2017||190.3 KB|
|Fact sheet||AB-QM Valve Submittal - 5" to 6", 2PT||English||United States||30 Jun, 2017||137.6 KB|
|Fact sheet||AB-QM Valve Submittal - 5" to 6", 3PT||English||United States||31 Jan, 2019||137.8 KB|
|Fact sheet||AB-QM Valve Submittal - 8" to 10", ISO||English||United States||24 Jun, 2012||101.2 KB|
|Fact sheet||AB-QM Valve Submittal - Hose Package||English||United States||30 Sep, 2018||140.7 KB|
|Fact sheet||AB-QM Valve Submittal - Tailpiece 0.5" - 1.25", Gen. 3||English||United States||30 Nov, 2014||77.1 KB|
|Case story||AB-QM Valves Raise Profits for CUBO Organic Poultry Farmer VZA7N122||English||United States||03 Aug, 2017||2.3 MB|
|Promotion material||AB-QM™ Presetting and Tagging Services Flyer||English||United States||31 Mar, 2017||1.9 MB|
|Catalog||AB-QM™ Quick Select Guide||English||United States||30 Sep, 2018||7.3 MB|
|Data sheet||AME 10 and 13 series modulating actuator||English||United States||26 Jun, 2016||238.1 KB|
|Fact sheet||AME 25 SU_SD Actuator Submittal VLHUE122||English||United States||20 Jun, 2016||383.5 KB|
|Fact sheet||AME55QM actuator submittal VLHUH122||English||United States||20 Jun, 2016||264.4 KB|
|Case story||Amsterdam Noord-Holland State Case Study||English||United States||31 Jul, 2014||113.7 KB|
|Fact sheet||AMV435 Actuator Submittal VLHUG122||English||United States||20 Jun, 2016||449.9 KB|
|Data sheet||Battery Backup for AME 55QM & 85QM- VDHUD122||English||United States||02 Feb, 2012||164.5 KB|
|Article||Delta T for Texas As Seen in Engineered Systems Magazine VØA7I122||English||United States||30 Jun, 2015||282.8 KB|
|Case story||High-end renovation project (Waldorf Astoria Hotel)||English||United States||26 May, 2015||479.3 KB|
|Article||Houston Methodist Hospital Gains Energy & Performance Benefit from Improved Chilled_Water Delta-T||English||United States||26 May, 2015||233.8 KB|
|Case story||Hydronic Analyzer Tests Prove Significant Savings in Malaysian Hotel VZA7S122||English||United States||10 Jun, 2015||417.2 KB|
|Case story||Keeping it Cool in Downtown Dubai, Burj Khalifa, VZA7T122||English||United States||10 Jun, 2015||223.4 KB|
|Case story||Monumental Energy Savings in Cooling System, Consplant Tower VZA7Q122||English||United States||10 Jun, 2015||247.7 KB|
|Case story||NA AB-QM Project References||English||United States||28 May, 2012||394.7 KB|
|Article||PICVs & VRFs: Two Sides of the Same Coin VØA7H122||English||United States||10 Jun, 2015||557.2 KB|
|Case story||Prime Tower Case Study||English||United States||31 Aug, 2014||219.4 KB|
|Case story||Renovation of a one pipe system with 18 percent energy savings||English||United States||31 Aug, 2014||719.2 KB|
|Case story||Rochester Institute of Technology (RIT) Case Study||English||United States||26 May, 2015||381.9 KB|
|Case story||Second Life for One-Pipe Heating System in Moscow, Russia VZA7U122||English||United States||10 Jun, 2015||612.9 KB|
|Case story||Sky-High Comfort, the Sustainable Way, Sky Tower VZA7R122||English||United States||10 Jun, 2015||282.0 KB|
|Case story||The Park - Small Valves Introduce Big Changes to Building Efficiency and Occupant Comfort VZA70122||English||United States||25 May, 2015||180.0 KB|
|Case story||UMKC Student Union Building Chooses Danfoss AB-QM||English||United States||21 Sep, 2017||104.8 KB|
A. Control Valves:
Factory fabricated pressure independent with internal differential pressure regulator (DPRV) which automatically adjusts to normal changes in system pressure and provides 100 percent control valve authority at all positions of the valve; maintain proportional/linear flow coil characteristics; and maintain a liner flow characteristic. The PICV shall accurately control the flow from 0-100 percent full rated flow with an operating pressure differential range of 3 to 60 PSIG, FCI 70-2 Class 4 shut-off on all sizes and field serviceable. Control valve shall incorporate control, balancing and flow limiting. Hydronic system pressure independent control valve bodies shall meet ASME B16.34 or ASME B16.15 pressure and temperature class ratings based on the design operating temperature and 150 percent of the system design operating pressure and shall have the following characteristics:
1. NPS 2 and Smaller: Class 150 bronze or brass body with union connections, stainless steel trim, stainless steel rising stem, stainless steel disc or ball, and screwed ends with back seating capacity repackable under pressure.
2. NPS 2-1/2 and Larger: Class 125 iron or ductile iron body, stainless steel trim, stainless steel rising stem, stainless steel disc or ball, flanged ends with back seating capacity repackable under pressure.
3. Pressure Control Seat: Brass construction with vulcanized EPDM.
Retain one or both sub-paragraphs below.
Maximum pressure drop of up to 5 psig (35 kPa) is usually acceptable. Show pressure drop on Drawings where critical.
4. Sizing: Line size.
5. Fittings and Components: All Fittings and Components shall meet ANSI standards and be totally compatible with readily available components in North America (except as allowed for 8” valves and above – Proper Companion Flanges must be supplied).
6. Close-Off (Differential) Pressure Rating: Combination of actuator, DPRV action, and trim shall provide minimum close-off pressure rating of 150 percent of total system (pump) head.
7. Valves shall be manufactured by one manufacturer throughout the project.
8. PICV’s shall be supplied by the PICV manufacturer only; “branded or 3rd party” PICV’s (those products which have been purchased from a manufacturer and labelled as manufactured by a supplier) are not acceptable.
B. Electronic Actuators:
Direct-mounted self-calibrating type designed for minimum 60,000 full-stroke cycles at rated force and shall be from the same manufacturer as the pressure independent control valve; branded or 3rd party actuators must be submitted and approved prior to bid. The actuator shall provide visible position indication. Fail positions on power failure shall include in-place, open or closed as noted in the ATC / BAS controls specifications.
Coordinate first subparagraph and list below with Part 2 "Manufacturers" Article. Retain "Available" for non-proprietary and delete for semi-proprietary specifications. If list does not include manufacturers of systems that make or market this equipment under their own name, those manufacturers' names may be added. List can be deleted if it is not important that specific manufacturers be named for this product.
1. Valves: Sized for maximum circuit flow rate, generally line sized.
2. Actuator to Coil Characteristics: Actuators shall be matched to provide the Heat Exchanger or Coil Characteristics of the product to be controlled – either Linear or Equal Percentage.
Actuators for Equal Percentage Characteristic coils shall be field set to Equal Percentage characteristics or possess built in adjustment features to provide an Alpha (α) Characteristic matching theα Characteristic of the coil or Heat Exchanger.
3. Overload Protection: Electronic overload or digital rotation-sensing circuitry.
4. Fail-Safe Operation: Mechanical, spring-return mechanism or Capacitance return. Power Requirements (Two-Position Spring Return): 24-V ac.
5. Power Requirements (Modulating): Maximum 10 VA at 24-V ac or 8 W at 24-V dc.
6. Proportional Signal: 0 to 10Vdc or 2 to 10-V dc or 4 to 20 mA, and 2- to 10-V dc position feedback signal.
7. Actuators for service above Ceilings shall possess UL listings and Approvals.
8. Temperature Rating: 40 to 104 Degrees F.
C. 3rd Party Test Results: The manufacturer shall submit in his submittal documentation package a set of 3rd Party test reports from a recognized testing agency verifying the accuracy and operation of the submitted valves and associated actuators. Separate reports for valves and actuators will not be acceptable.
D. Acceptable Manufacturers:
1. Base Bid: Danfoss AB-QM PICV valves
2. Alternate Deduct Manufacturer Bids may be Accepted with Approval by the Engineer Prior to Bid, including submission of 3rd Party Test Reports.
Engineering Tomorrow solves complex energy and comfort problems for elementary school
Built in 1921, A.K. Suter Elementary School in Pensacola, Florida — like many older public schools in the state — used a retrofitted patchwork of packaged and split system air conditioning equipment to keep students comfortable in a warm, humid climate. In order to rejuvenate the almost 100-year-old school, the District decided in 2011 to tear down the old school and rebuild it from scratch using new, high-efficiency HVAC technology. Today, the brand new A.K. Suter Elementary is by far the most energy-efficient of all ECSD schools – thanks in part to advanced HVAC technology, including Danfoss Turbocor® oil-free centrifugal compressors and AB-QM™ valves.
High-end climate solutions in Waldorf Astoria by Hilton, Amsterdam, the Netherlands
Application: Hydronic balancing and control for radiator heating and fan coil cooling
Challenge: Establish top level comfort and minimum energy consumption for heating and cooling
Solution: Fan-coil units for cooling; 8 heating risers and radiators equipped with Danfoss products.
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.
SAMBA bank head office cuts energy use by 25% with AB-QM, Riyadh, UAE
At the heart of the new King Abdullah Financial District in Riyadh stands the impressive SAMBA head office. The 40-story 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.
Rochester Institute of Technology puts PICVs to the Test
In hydronic HVAC systems made up of traditional balancing and control valves, system pressure is affected every time a valve changes its position. When the system pressure changes, the flow through all of the valves reacts and causes the amount of heat transfer through each device to also change.