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Datasheet generated 2026-10-07
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Danfoss ASV-PV 3G DN 125 differential pressure controller 70-150 kPa flanged (003Z0656)

Danfoss · HVAC & Refrigeration · Balancing Valves · Denmark · danfoss.com
Part Number
003Z0656  ·  HS 8481.80
Danfoss ASV-PV 3G DN 125 differential pressure controller 70-150 kPa flanged (003Z0656)

Danfoss ASV-PV 3G DN 125 — third-generation self-acting differential-pressure controller for automatic hydronic balancing. Installed in the return pipe of a heating or cooling circuit, it holds a constant differential pressure across the branch or terminal (paired with an ASV-BD/ASV-M/ASV-I partner valve and an impulse tube), so that two-way control-valve authority stays high and flow noise is avoided at part load. Differential-pressure setting range 70-150 kPa (factory setting ), Kvs 160 m³/h, Grey cast iron EN-GJL-250 (GG-25) body, Flange connection, PN 16, media temperature 2 °C to 120 °C, integral shut-off. OEM P/N 003Z0656. EAN 5710104509600. Technical data quoted verbatim from store.danfoss.com (code 003Z0656).

Technical Specifications

Code number003Z0656
TypeASV-PV 3G
Product groupAutomatic balancing
DescriptionASV-PV 3G, DN 125, 70 KPa - 150 KPa, Flange
Valve sizeDN 125
Valve body materialGrey cast iron EN-GJL-250 (GG-25)
Connection typesFlange
Pressure classPN 16
Pressure nominal [bar]16 bar
Kvs values [m³/h]160 m³/h
Differential pressure setting [kPa] [Min]70 KPa
Differential pressure setting [kPa] [Max]150 KPa
Diameter [mm]125 mm
Permissible mediaDistrict heating/cooling circulation water
Media temperature [°C] [Min]2 °C
Media temperature [°C] [Max]120 °C
Contains batteriesNo
EU RoHS complianceYes with exemptions
EU RoHS exemption clause6(c)
China RoHS complianceOut of scope
REACH Candidate List substancesLead (CAS no. 7439-92-1)
Net weight90 Kilogram
Gross weight119.3 Kilogram
Volume504 Liter
EAN5710104509600
Actuator diaphragm materialEPDM
ApplicationHeating
Cavitation factor0.35
Differential pressure range [bar] [Max]2.5 bar
Differential pressure range [bar] [Min]0.1 bar
Differential pressure setting [bar] [Max]1.5 bar
Differential pressure setting [bar] [Min]0.7 bar
Flow controlNo
Flow limitationNo
FunctionDiff. press. controller
Function VSP - PYes
Function VSP - QNo
Function VSP - TNo
Media pH [Max]10
Media pH [Min]7
Medium alternativeGlycolic water up to 30%
Mounting versionReturn
Number of ports2
Pressure controllerDifferential pressure controller
Sealing DP materialMetal
Setting TypeAdjustable
Stem positionNormally open
Valve cone DP materialStainless steel, mat. No. 1.4404
Valve seat materialStainless steel, mat. No. 1.4021

Properties

MaterialValve body Grey cast iron EN-GJL-250 (GG-25)
Pressure ratingPN 16
Temperature range2 °C to 120 °C (media)
MOQ1

Compatibility

Danfoss ASV-PV 3G differential-pressure controller for DN 125 circuits. The valve maintains a set differential pressure and is used with a matching ASV-BD/ASV-M/ASV-I partner (manual balancing / shut-off) valve; select the setting range (70-150 kPa here) to bracket the required branch differential pressure, and confirm the connection type (Flange) matches the pipework. Impulse tube is supplied with the valve.

Approvals

Attached Documents