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Datasheet generated 2026-10-07
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Danfoss AFQMP 2 DN 65 PN 25 pressure-independent flow + differential-pressure control valve — flange, Kvs 60 m³/h, flow 5.4–61 m³/h, Δp 0.1 bar–1 bar (003G5570)

Danfoss · HVAC & Refrigeration · Balancing Valves · Denmark · danfoss.com
Part Number
003G5570  ·  HS 8481.80
Danfoss AFQMP 2 DN 65 PN 25 pressure-independent flow + differential-pressure control valve — flange, Kvs 60 m³/h, flow 5.4–61 m³/h, Δp 0.1 bar–1 bar (003G5570)

Danfoss AFQMP 2 DN 65 PN 25 — self-acting pressure-independent flow control valve with an integrated differential-pressure controller, for district heating and district cooling circuits. Combines automatic flow limitation, a control valve and a differential-pressure controller in one body: the flow set point is held independent of pressure variation, while the differential pressure across the control valve is kept constant. Flange connection. Kvs 60 m³/h; adjustable flow range 5.4–61 m³/h (flow restrictor differential pressure dpb 1 bar); differential-pressure setting range 0.1 bar–1 bar. Media temperature 2 °C to 150 °C. Maximum operating pressure 25 bar. Body Ductile cast iron EN-GJS-400-18-LT (GGG 40.3); valve cone and seat Stainless steel mat. No. 1.4021; EPDM seals and rolling diaphragm. Normally-open stem, stroke 12 mm. Medium: district heating/cooling circulation water (glycolic water up to 30%). OEM designation "AFQMP 2, PN 25, DN 65, 0.1 bar - 1 bar, Flow rate [m³/h]: 5.4 - 61, Flange, Mounting version: Free". OEM P/N 003G5570. EAN 5714279064773. Technical data quoted verbatim from store.danfoss.com (code 003G5570).

Technical Specifications

Code number003G5570
TypeAFQMP 2
Product groupPressure flow controllers
Gross weight77 Kilogram
Net weight52 Kilogram
Volume637.44 Liter
Actuator diaphragm materialEPDM (Rolling, fibre enforced)
Actuator size [cm²]160 cm²
ApplicationDistrict heating and cooling
Cavitation factor0.6
Cavitation factor 100%0.52
Cavitation factor 25%0.67
Cavitation factor 50%0.67
Cavitation factor 75%0.6
China RoHS complianceOut of scope
Connection sizeDN 65
Connection typesFlange
Contains batteriesNo
DescriptionPressure independent control valve
Diameter [mm]65 mm
Differential pressure range [bar] [Max]20 bar
Differential pressure setting [bar] [Max]1 bar
Differential pressure setting [bar] [Min]0.1 bar
EU RoHS complianceOut of scope
Flow controlYes
Flow limitationYes
Flow rate [m³/h]61 m³/h
Flow rate [m³/h] [Max]61 m³/h
Flow rate [m³/h] [Min]5.4 m³/h
Flow restrictor diff.pressure - dpb [bar]1 bar
FunctionFlow controller with int. control valve
Function VSP - PNo
Function VSP - QNo
Function VSP - TNo
Kvs values [m³/h]60 m³/h
Leakage rate [% Kvs]0.01
Leakage through port max. [% Kvs]0.01
Media pH [Max]10
Media pH [Min]7
Media temperature [°C] [Max]150 °C
Media temperature [°C] [Min]2 °C
Medium alternativeGlycolic water up to 30%
Mounting versionFree
Number of ports2
Operating pressure [bar] [Max]25 bar
Permissible mediaDistrict heating/cooling circulation water
PN alternative VSP40
Pressure classPN 25
Pressure controllerNo
Pressure nominal [bar]25 bar
Pressure relieve system control valve insertChamber
Pressure setting range [bar] [Max]1 bar
Pressure setting range [bar] [Min]0.1 bar
REACH Candidate List substancesLead (CAS no. 7439-92-1)
Sealing CV materialEPDM
Sealing DP materialEPDM
Setting TypeAdjustable
Stem positionNormally open
Stroke [mm]12 mm
Valve body materialDuctile cast iron EN-GJS-400-18-LT (GGG 40.3)
Valve cone CV materialStainless steel mat. No. 1.4021
Valve cone DP materialStainless steel mat. No. 1.4021
Valve seat DP materialStainless steel, mat. No. 1.4021
Valve seat materialStainless steel, mat. No. 1.4021
Valve sizeDN 65
EAN5714279064773
HS code8481.80

Properties

MaterialValve body Ductile cast iron EN-GJS-400-18-LT (GGG 40.3); cone/seat Stainless steel mat. No. 1.4021; EPDM diaphragm and seals
Pressure ratingPN 25
Temperature range2 °C to 150 °C
Standard sizeAFQMP 2
MOQ1

Compatibility

AFQMP 2 adds an integrated differential-pressure controller to the AFQM flow limiter, holding both the flow set point and the differential pressure across the control valve constant. Select by pipe size (DN 65), pressure class (PN 25), required flow range and differential-pressure setting. The AFQMP range spans DN 65–250 in PN 16 / PN 25 / PN 40. For flow limitation only use AFQM; for differential-pressure and flow limitation without an integrated control valve use AFPQ. Confirm DN, PN, flow band and Δp setting against the AFQMP data sheet before ordering.

Attached Documents