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Datasheet generated 2026-10-07
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Danfoss VB 2 seated flanged 2-Way control valve body DN 20 PN 25 Kvs 6.3 m³/h (065B2057)

Danfoss · Valves · Globe Valves · Denmark · danfoss.com
Part Number
065B2057  ·  HS 8481.80
Danfoss VB 2 seated flanged 2-Way control valve body DN 20 PN 25 Kvs 6.3 m³/h (065B2057)

Danfoss VB 2 2-way seated control-valve body (OEM designation "VB 2 PN25 20/6,3 2-way seated flange"). A flanged globe-type valve body for use with a Danfoss AMV/AME electric linear actuator on District heating/cooling circulation water heating and district-heating circuits — the actuator is ordered separately and drives the 5 mm stroke spindle. Valve size DN 20; PN 25; Kvs 6.3 m³/h m³/h; Flange connection; Split flow characteristic; control ratio 50:1; maximum differential pressure 16 bar; spindle Normally open. Body Ductile cast iron EN-GJS-400-18-LT (GGG 40.3); cone Stainless steel; seat Stainless steel; stuffing-box seal EPDM; seat leakage ≤ 0.05 % Kvs. Media District heating/cooling circulation water (Glycolic water up to 30%), 2 °C to 150 °C. OEM P/N 065B2057. EAN 5702421508466. Technical data quoted verbatim from store.danfoss.com (code 065B2057).

Technical Specifications

Code number065B2057
TypeVB 2
Product groupMotorized control valves
Gross weight4.558 Kilogram
Net weight4.558 Kilogram
Volume4.786 Liter
ApplicationDistrict Heating
Application alternative VSPHeating
Connection typesFlange
Control ratio50:1
DescriptionVB 2 PN25 20/6,3 2-way seated flange
Diameter [mm]20 mm
Differential pressure range [bar] [Max]16 bar
Flow characteristicSplit
FunctionPressure relief
Kvs values [m³/h]6.3 m³/h
Leakage through port max. [% Kvs]0.05
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%
Number of ports2
Permissible mediaDistrict heating/cooling circulation water
PN alternative VSP16
Pressure classPN 25
Pressure nominal [bar]25 bar
Spindle positionNormally open
Stroke [mm]5 mm
Stuffing box sealing materialEPDM
Valve body materialDuctile cast iron EN-GJS-400-18-LT (GGG 40.3)
Valve cone materialStainless steel
Valve seat materialStainless steel
Valve sizeDN 20
Valve stem materialStainless steel
EAN5702421508466
HS code8481.80

Properties

MaterialDuctile cast iron EN-GJS-400-18-LT (GGG 40.3)
Pressure ratingPN 25
Temperature range2 °C to 150 °C
Standard sizeVB 2
Thread standardFlange
MOQ1

Compatibility

Order a Danfoss AMV/AME linear actuator (5 mm stroke) to drive this VB 2 body — the body ships without actuator. Flanged body; mate to PN-matched counter-flanges. Confirm DN (DN 20), Kvs (6.3 m³/h), PN (PN 25) and the actuator stroke/force against the VM 2 / VB 2 data sheet before ordering. The replaceable valve insert (065B2033-2041) and stuffing-box service kit (065B2070) are the field-serviceable parts.

Attached Documents