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Datasheet generated 2026-10-08
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Danfoss VRB 3 3-Way seated control valve body DN 20 Kvs 6.3 PN 16 external-thread (065Z0156)

Danfoss · Valves · Globe Valves · Denmark · danfoss.com
Part Number
065Z0156  ·  HS 8481.80
Danfoss VRB 3 3-Way seated control valve body DN 20 Kvs 6.3 PN 16 external-thread (065Z0156)

Danfoss VRB 3 3-way seated mixing/diverting control-valve body (OEM designation "VRB 3 PN16 20/6,3 3-way seated ext. A external-thread globe-type valve body for motorised control of District heating/cooling circulation water on heating, cooling and district-heating circuits — driven by a separately-ordered Danfoss AMV/AME electric actuator for constant-flow mixing or diverting service. Valve size DN 20; PN 16; Kvs 6.3 m³/h; 3 ports; External Thread connection G 1 1/4; Equal percentage flow characteristic; control ratio 100:1; Mixing valve; body Red bronze, mat. 2.1096.1 (RG5); cone Brass; stem Stainless steel; stuffing-box seal EPDM; seat leakage bubble tight design % Kvs. Media District heating/cooling circulation water (Glycolic water up to 50%), -10 °C to 130 °C. OEM P/N 065Z0156. Technical data quoted verbatim from store.danfoss.com (code 065Z0156). Deployed in process, utility and marine piping loops for on-off shutoff, control, safety relief or diversion service. No. 2.1096.1 (RG5); Standard size: VRB 3; Thread: External Thread G 1 1/4; Pressure rating: PN 16; Temperature range: -10 °C to 130 °C; HS code: 8481.80.

Technical Specifications

Code number065Z0156
TypeVRB 3
Product groupOther valves
Gross weight0.996 Kilogram
Net weight0.9 Kilogram
Volume1.426 Liter
ApplicationHeating and cooling
Application alternative VSPChilled water
Cavitation factor0.4
Closing differential pressure (diverting) [bar] [Max]1 bar
Closing differential pressure (mixing) [bar] [Max]4 bar
Connection sizeG 1 1/4
Connection typesExternal Thread
Control ratio100:1
DescriptionVRB 3 PN16 20/6,3 3-way seated ext. thr
Diameter [mm]20 mm
Flow characteristicEqual percentage
FunctionMixing valve
Kvs values [m³/h]6.3 m³/h
Leakage through port (B-AB) max. [% Kvs]1.0
Leakage through port max. [% Kvs]bubble tight design
Media pH [Max]10
Media pH [Min]7
Media temperature [°C] [Max]130 °C
Media temperature [°C] [Min]-10 °C
Medium alternativeGlycolic water up to 50%
Mounting versionFlow
Number of ports3
Permissible mediaDistrict heating/cooling circulation water
PN alternative VSP10
Pressure nominal [bar]16 bar
Stroke [mm]15 mm
Stuffing box sealing materialEPDM
Valve body materialRed bronze, mat. No. 2.1096.1 (RG5)
Valve cone materialBrass
Valve stem materialStainless steel
EAN5702421559109
HS code8481.80
Nominal diameterDN20

Properties

MaterialRed bronze, mat. No. 2.1096.1 (RG5)
Pressure ratingPN 16
Temperature range-10 °C to 130 °C
Standard sizeVRB 3
Thread standardExternal Thread G 1 1/4
MOQ1

Compatibility

Order a Danfoss AMV/AME linear actuator (15 mm stroke) to drive this VRB 3 body — the body ships without actuator. Three-port valve for mixing (two inlets, one outlet) or diverting service; confirm the flow/mixing mounting orientation. Match DN (DN 20), Kvs (6.3), PN (PN 16) and the external-thread connection (G 1 1/4) against the VRG/VRB data sheet before ordering; external-thread and internal-thread bodies of the same DN are not interchangeable.

Attached Documents