Danfoss VGUF Control Valve Body DN 40 PN 25 Kvs 20 m³/h (2-Way flanged)
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Product Description
Danfoss VGUF two-way flanged seat (globe) control valve body, OEM order code 065B0798. Nominal size DN 40, pressure class PN 25, flow coefficient Kvs 20 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 40 (EN 1092-2). OEM P/N 065B0798. Data quoted verbatim from store.danfoss.com (code 065B0798). 1.4571; Standard size: DN 40; 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
- Brand
- Danfoss
- Part number
- 065B0798
- Type
- VGUF
- Product group
- Motorized control valves
- Application
- Cooling
- Function
- Control valve
- Valve size
- DN 40
- Pressure class
- PN 25
- Nominal pressure
- 25 bar
- PN alternative (VSP)
- 16
- Kvs value
- 20 m³/h
- Connection type
- Flange
- Connection size
- 40
- Connection standard
- EN 1092-2
- Number of ports
- 2
- Flow characteristic
- Approx. linear
- Cavitation factor
- 0.6
- Spindle position
- Normally closed
- Pressure relief system
- Piston
- Stroke
- 5 mm
- Diameter
- 40 mm
- Differential pressure (max)
- 16 bar
- Media temperature
- 2 °C to 150 °C
- Permissible media
- District heating/cooling circulation water
- Medium alternative
- Glycolic water up to 30%
- Media pH range
- 7 to 10
- Leakage through port (max)
- 0.05 % Kvs
- Mounting version
- Free
- Valve body material
- Ductile cast iron EN-GJS-400-18-LT (GGG 40.3)
- Valve cone material
- DZR brass CuZn36Pb2AS (CW 602N)
- Valve seat material
- Stainless steel, mat. No. 1.4571
- Sealing material
- EPDM
- Net weight
- 10.015 Kilogram
- Gross weight
- 10.015 Kilogram
- Volume
- 14.31 Liter
- EAN
- 5702421543801
- HS code
- 8481.80 (taps, cocks, valves for pipes)
- China RoHS compliance
- Out of scope
- Connection types
- Flange
- Description
- VGUF PN25 40/20 2-way flange flow/ret
- Diameter [mm]
- 40 mm
- Differential pressure range [bar] [Max]
- 16 bar
- EU RoHS compliance
- Out of scope
- Kvs values [m³/h]
- 20 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 system
- Piston
- REACH Candidate List substances
- Lead (CAS no. 7439-92-1)
- Stroke [mm]
- 5 mm
Standards & Compliance
- Size / Series
- DN 40
- Material
- Ductile cast iron EN-GJS-400-18-LT (GGG 40.3); cone DZR brass CuZn36Pb2AS (CW 602N); seat Stainless steel, mat. No. 1.4571
- Pressure Rating
- PN 25 (25 bar); max differential pressure 16 bar
- Temperature Range
- 2 °C to 150 °C
- Classification / Approval
- CE
- HS Code
- 8481.80
Compatibility & Fitment
Valve body for a Danfoss cooling control-valve assembly. Combine the VGUF DN 40 body with a matched electric AMV / AME (or self-acting) actuator sized for the required duty. Select by nominal size (DN 40), pressure class (PN 25) and flow coefficient (Kvs 20 m³/h); verify actuator stroke 5 mm and media compatibility before ordering.
Product Documentation
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Technical guides
- Cross-Referencing Danfoss Refrigeration Components by IMPA and OEM Code
- Danfoss Product Code Decoder — 003Z, 013G, 017B, 023U, 027L, 032F, 060G, 060H, 065B, 065Z, 068Z, 084H, 132F, 148B Series (Complete Reference)
- Danfoss Maneurop MTZ Reciprocating Compressors — Model Range, Voltage Codes and Replacement Guide
Catalogue entry last verified: 2026-08-29. A manufacturer datasheet is attached to this entry — confirm application-critical values against it.
Frequently asked questions
- Where can I buy 065B0798?
- 065B0798 can be ordered from cballast.com as a Danfoss catalogue item: request a quotation on this page or email sales@cballast.com, and the order ships worldwide.
- What is the manufacturer part number for this Danfoss product?
- The manufacturer part number is 065B0798.
- What is the HS code for 065B0798?
- The customs tariff (HS) code for 065B0798 is 8481.80.
- Who manufactures 065B0798?
- 065B0798 is a Danfoss product in the Valves range.
- Is a datasheet available for 065B0798?
- Yes — the 065B0798 datasheet can be viewed and downloaded on this page.
- What is the minimum order quantity for 065B0798?
- The minimum order quantity is 1.
- Is 065B0798 available?
- Yes — 065B0798 is available to order: fulfilment is from supplier stock in cBallast's European network, dispatched directly from the warehouse to the customer, with the exact lead time stated in the quotation (reply within 24 hours).