Danfoss VGS Data sheet
Data sheet
2 - way valve for steam, pressure relieved (PN 25)
VGS - external thread
Description
Ordering
Example:
Valve for steam, DN 15; kVS 1.6;
PN 25; T
- 1× VGS DN 15 valve
Option:
- 1× Weld-on tailpieces
The valve will be delivered together
with two adapters:
M34 × M45 and M34 × M30
200 °C; ext. thread
max
Code No: 065B0787
Code No: 003H6908
VGS is pressure relieved 2-way normally open (NO)
valves for steam, designed to be combined with:
- AVT Temperature actuators
- STM Safety temperature monitors
- STL Safety temperature limiters
- AMV(E) 20 / AMV(E) 30 electrical actuators
- AMV(E) 23 / AMV(E) 33 electrical actuators
with spring return function
In combination with AVT temperature actuators
and AMV(E) electrical actuators, valves can be
used for temperature control with steam or hot
water up to 200 °C.
Main data:
• DN 15-25
• kVS 1.0 - 6.3 m3/h
• PN 25
• Temperature:
- Steam/circ. water/glycolic water up to 30 %:
2 … 200 °C
• Connections:
- Ext. thread (weld-on, thread and flange
tailpieces)
• Flow and return mounting
Picture
1)
DN k
(mm) (m3/h)
15
20 4.5 G 1 A 065B0789
25 6.3 G 1¼ A 065B0790
VS
1.0
1.6 065B0787
3.2 065B0788
Cylindrical external
thread acc. to
Connection Code No.
G ¾ A
ISO 228/1
VGS valve
1)
Two adapters are deli vered together with the valve: M34 × M 45 and M34 × M30 (for detai ls see Accessories);
M34 × M45 is factory as sembled on the valve.
065B0786
© Danfoss | 2017.01
VD.HD.W3.02 | 1
Data sheet 2 - way valve for steam, pressure relieved (PN 25)
Ordering (continuous)
Accessories
Picture Type designation DN Connection Code No.
15
Weld-on tailpieces
20 003H6909
-
25 00 3H6910
External thread tailpieces
15
Conical ex t. thread acc. to
20 R ¾ 003H6903
25 R 1 003H6904
EN 1022 6-1
R ½ 003H6902
15
Flange tailpieces
20 003H 6916
Flanges PN 25, acc. to EN 1092-2
25 0 03H6 917
1)
Adapter
2)
Adapter
1)
Adapter for VGS combi nations with electrical a ctuators type AMV(E) 20, 23, 3 0, 33.
2)
Adapter for VGS combina tions with temperature act uators AVT, temperature monito rs STM and temperature limi ters STL.
M34 × 1.5 mm / M30 × 1.5 mm 003H18 35
M34 × 1.5 mm / M45 × 1.5 mm 003H6927
Service kits
Picture Type designation for valves DN k
15 3.2
Valve body extension with stuf fing box
25 6.3
VS
003H6908
003H6915
Code No.
003H687720 4.5
Technical data
Nominal diameter DN 15 20 25
k
value m3/h 1.0 1.6 3. 2 4.5 6.3
VS
Stroke mm 3 5
Control ratio >1: 50
Control characteristic linear
Cavitation factor z ≥ 0.6 ≥ 0.55
Leakage acc. to standard IEC 534 % of k
VS
Nominal pressure PN 25
Max. differential pressure bar 10
Medium Steam / Circulation water / Glycolic water up to 30%
Medium pH Min. 7, max. 10
Medium temperature
Connections
valve External thread
tailpieces Weld-on, external thread and flange
°
C 2 … 200
Materials
Valve body Red bronze CuSn5ZnPb (Rg5)
Valve seat Stainless steel, mat. No. 1.4571
Valve cone Stainless steel, mat. No. 1.4122
Pressure relive system Bellows
≤ 0.05
2 | VD.HD.W3.02
© Danfoss | 2017.01
Data sheet 2 - way valve for steam, pressure relieved (PN 25)
Application principles
Pressure temperature
diagram
CuSn5ZnPb (Rg5) PN 25
Maximum allowed operating pressure as a function of medium temperature (according to EN 1092-3).
© Danfoss | 2017.01
VD.HD.W3.02 | 3
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