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Datasheet generated 2026-10-07
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Danfoss VGUF Control Valve Body DN 50 PN 25 Kvs 25 m³/h (2-Way flanged)

Danfoss · Valves · Globe Valves · Denmark · danfoss.com
Part Number
065B0799  ·  HS 8481.80
Danfoss VGUF Control Valve Body DN 50 PN 25 Kvs 25 m³/h (2-Way flanged)

Danfoss VGUF two-way flanged seat (globe) control valve body, OEM order code 065B0799. Nominal size DN 50, pressure class PN 25, flow coefficient Kvs 25 m³/h. The VGUF is the valve-body element of a Danfoss cooling control-valve assembly: it pairs with a matched electric AMV / AME (or self-acting) actuator to form a temperature, pressure or flow controller. Ductile cast iron EN-GJS-400-18-LT (GGG 40.3) body with DZR brass CuZn36Pb2AS (CW 602N) cone and stainless-steel, mat. 1.4571 seat, approx. linear flow characteristic, 5 mm stroke, spindle normally closed, piston pressure relief. Rated for district heating/cooling circulation water at 2 °C to 150 °C, maximum differential pressure 16 bar. Connection 50 (EN 1092-2). OEM P/N 065B0799. Data quoted verbatim from store.danfoss.com (code 065B0799). 1.4571; Standard size: DN 50; Pressure rating: PN 25 (25 bar); max differential pressure 16 bar; Temperature range: 2 °C to 150 °C; Approval: CE; Approvals: CE; HS code: 8481.80. Deployed in process, utility and marine piping loops for on-off shutoff, control, safety relief or diversion service.

Technical Specifications

BrandDanfoss
Part number065B0799
TypeVGUF
Product groupMotorized control valves
ApplicationCooling
FunctionControl valve
Valve sizeDN 50
Pressure classPN 25
Nominal pressure25 bar
PN alternative (VSP)16
Kvs value25 m³/h
Connection typeFlange
Connection size50
Connection standardEN 1092-2
Number of ports2
Flow characteristicApprox. linear
Cavitation factor0.6
Spindle positionNormally closed
Pressure relief systemPiston
Stroke5 mm
Diameter50 mm
Differential pressure (max)16 bar
Media temperature2 °C to 150 °C
Permissible mediaDistrict heating/cooling circulation water
Medium alternativeGlycolic water up to 30%
Media pH range7 to 10
Leakage through port (max)0.05 % Kvs
Mounting versionFree
Valve body materialDuctile cast iron EN-GJS-400-18-LT (GGG 40.3)
Valve cone materialDZR brass CuZn36Pb2AS (CW 602N)
Valve seat materialStainless steel, mat. No. 1.4571
Sealing materialEPDM
Net weight11.642 Kilogram
Gross weight11.642 Kilogram
Volume15.159 Liter
EAN5702421543818
HS code8481.80 (taps, cocks, valves for pipes)
China RoHS complianceOut of scope
Connection typesFlange
DescriptionVGUF PN25 50/25 2-way flange flow/ret
Diameter [mm]50 mm
Differential pressure range [bar] [Max]16 bar
EU RoHS complianceOut of scope
Kvs values [m³/h]25 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
Pressure nominal [bar]25 bar
Pressure relieve systemPiston
REACH Candidate List substancesLead (CAS no. 7439-92-1)
Stroke [mm]5 mm

Properties

MaterialDuctile cast iron EN-GJS-400-18-LT (GGG 40.3); cone DZR brass CuZn36Pb2AS (CW 602N); seat Stainless steel, mat. No. 1.4571
Pressure ratingPN 25 (25 bar); max differential pressure 16 bar
Temperature range2 °C to 150 °C
Standard sizeDN 50
MOQ1

Compatibility

Valve body for a Danfoss cooling control-valve assembly. Combine the VGUF DN 50 body with a matched electric AMV / AME (or self-acting) actuator sized for the required duty. Select by nominal size (DN 50), pressure class (PN 25) and flow coefficient (Kvs 25 m³/h); verify actuator stroke 5 mm and media compatibility before ordering.

Approvals

Attached Documents