Danfoss VFG 2, VFG 21, VFGS 2, VFG 33, VFU 2 Data sheet
Data sheet
Two- and three way valves VFG.. / VFGS 2 / VFU..
for self-acting thermostats and electrical actuators
Description
VFG 2
VFG 21
(see pages 2, 3, 4)
VFGS 2
(see pages 5, 6)
VFG 33
(see pages 6, 7)
Valves for heating, district heating and cooling
systems.
The valves can be used with following actuators:
• Thermostats AFT..
• Actuators AMV(E) 655, 658 , 659 (from Q4 2014)
Main data:
• DN 15-250
• T
200 °C
max
• 2-way valve (Normaly Open)
• Media:
circulation water and glycolic water up to 30%
• Cone:
VFG 2 metal/metal sealing
VFG 21 soft sealing
• Pressure relieved
Main data:
• DN 15-250
• T
350 °C
max
• 2-way valve (Normaly Open)
• Media: steam
• Cone: metal/metal sealing
• Pressure relieved
Main data:
• DN 25-125
• T
200 °C
max
• Media:
circulation water and glycolic water up to 30%
• mixing pressure balanced valve
• Cone: metal/metal sealing
VFU 2
(see page 7, 8)
© Danfoss | 2018.10
Main data:
• DN 15-125
• T
150 °C
max
• 2-way valve (Normaly Close)
• Media:
circulation water and glycolic water up to 30%
• Cone: metal/metal sealing
• Pressure relieved
VD.LH.I4.02 | 1
Data sheet Two- and three way valves VFG.. / VFGS 2 / VFU..
Ordering (VFG 2)
Cone:
metal /metal sealing, pressure
relieved.
Picture
DN
(mm)
k
VS
(m3 /h)
Connections
T
(°C)
15 4.0
20 6.3 065B2389 065B2402 065B2412
max
Code No.
PN 16 PN 25 PN 40
T
(°C)
max
065B2388
Code No.
065B2401 06 5B 2411
25 8.0 065B2390 065B24 03 06 5B2413
32 16 065B 2391 065B2404 065 B2414
40 20 065B2392 065B2405 06 5B2415
50 32 065 B2393 065B2406 065 B2416
65 50 065B2394 065B2407 06 5B2 417
80 80 065B2395 065B2408 065 B2418
100 125 065B2396 065B2409 065 B2419
125 160 065B2397 0 65B2 410 065B2420
Flanges acc. to
EN 1092-1
150 280
200 320 065B2399 – 065B2422
150
150
1)
1)
065B2398
200
150
1)
– 065B2421
1)
250 400 065B2400 – 065B2423
150 280
200 320 065B2425 – On request
150
1)
065B2424
200
1)
– On request
250 400 065B2426 – On request
1)
For detaile d temperature limits refe r to pressure/temperature di agram pg 9
Technical data (VFG 2)
Nominal diameter DN 15 20 25 32 40 50 65 80 100 125 150 200 250
280
kVS value (m3/h) 4 6.3 8 16 20 32 50 80 12 5 16 0
320
z value acc. to VDMA 24 422 0.6 0.6 0.6 0.55 0.55 0.5 0.5 0.45 0.4 0.35 0.3 0.2 0.2
2)
Δp
(bar) PN 16 16 16 16 16 16 16 16 16 15 15
max.
AFT PN 25, 40 20 20 20 20 20 20 20 20 15 15
320
1)
1)
450
400
630
1)
3)
Δp
(bar) PN 16 16 16 16 16 16 16 16 16 15 15 12 10 10
max.
AMV(E) 655, 658 , 659
(from Q4 2014)
Nominal pressure
4)
2)
Flow media/Temperature
Pressure balance Stainless steel bellow, mat. No.1.4571
PN 25, 40 20 20 20 20 20 20 20 20 15 15 12 10 10
PN 16, 25 flanges to EN 1092-2 or 40, flanges to EN 1092-1
PN 16 Circulation water / Glycolic water up to 30 % / thermo oil / 2 … 150 °C
PN 25, 40 Circulation water / Glycolic water up to 30 % / thermo oil / 2 … 200 °C
Rolling diaphragm
PN 16 Grey cast iron EN-GJL-250 (GG-25)
Valve body material
PN 25 Ductile iron EN- GJS-400 -18-LT (GGG- 40.3)
PN 40 Cast steel GP240GH (GS-C 25)
Cone material Stainless steel, mat. No. 1.4404 mat . No. 1.4021
Seat material Stainless steel, mat. No. 1.4021 mat. No. 1.4313
1)
In combinatio n with actuators AMV(E), kVS values are highe r if Y6 0 piece is removed from valve.
2)
Ab ove operating pressure of 14 bar use of valve ste m extension ZF4, ZF6 or combinati on piece KF2 is necessary.
3)
I n order the actuator can close at m ax differential pressu re flow velocity musn’t e xceed 2 m/s.
4)
With adapter : 065B3 527
2 | © Danfoss | 2018.10
VD.LH.I4.02
Data sheet Two- and three way valves VFG.. / VFGS 2 / VFU..
1
Design (VFG 2)
1. Valve body
2. Valve seat
3. Bellows
4. Valve insert
5. Diaphragm
6. Valve body extension
7. Shut off valve for water filling
8. Closing plug
VFG 2 DN 15-125
2
5
3
4
VFG 2 DN 150-250
VFG 2 DN 150-250, T
max
200 °C
Ordering (VFG 21)
Cone:
soft sealing, pressure relieved.
Picture
8
6
5
7
DN
(mm)
15 4.0
20 6.3 065B2503
25 8.0 065B2504
32 16 065B2505
40 20 065B2506
50 32 065B2507
65 50 065B2508
80 80 065B2509
100 125 065B2 510
125 160 06 5B2 511
150 280
200 320 065B2513
250 400 065B 2514
k
VS
(m3 /h)
Connections
Flanges acc. to EN
1092-1
T
(°C)
150
150
max
Code No.
PN 16
065B2502
06 5B2512
VD.LH.I4.02
© Danfoss | 2018.10 | 3
Data sheet Two- and three way valves VFG.. / VFGS 2 / VFU..
1
Technical data ( VFG 21)
Nominal diameter DN DN 15 20 25 32 40 50 65 80 100 125 150 200 250
280
kVS value (m3/h) 4 6.3 8 16 20 32 50 80 125 16 0
z value acc. to VDMA 24 422 0.6 0.6 0.6 0.55 0.55 0.5 0.5 0.45 0.4 0. 35 0.3 0.2 0.2
2)
Δp
(bar) PN 16 16 16 16 16 16 16 16 16 15 15
max.
Δp
(bar) PN 16 16 16 16 16 16 16 16 16 15 15 12 10 10
max.3)
320
320
1)
1)
450
400
630
1)
AMV(E) 655, 658 , 659
(from Q4 2014)
Nominal pressure
4)
2)
PN 25 20 20 20 20 20 20 20 20 15 15 12 10 10
PN 16 or 25, flanges to EN 1092-2
Flow media/Temperature Circulation water / Glycolic water up to 30 % / 2 … 150 °C
Pressure balance Stainless steel bellow, mat. No.1.4571 Rolling diaphragm
Valve body material
PN 16 Grey cast iron EN-GJL-250 (GG-25)
PN 25 Ductile iron EN- GJS-400 -18-LT (GGG- 40.3)
Cone material Stainless steel, mat. No. 1.4404 mat . No. 1.4021
Seat material Stainless steel, mat. No. 1.4021 mat. No. 1.4313
Conical seal EPDM
1)
in combinatio n with actuators AMV(E), kVS values are highe r if Y6 0 piece is removed from valve.
2)
above operati ng pressure of 14 bar use of valve stem extensi on ZF4, ZF6 or combination piece KF2 is ne cessary.
3)
I n order the actuator can close at m ax differential pressu re flow velocity musn’t e xceed 2 m/s.
4)
With adapter : 065B3 527
Design (VFG 21)
VFG 21 DN 15-125 VFG 21 DN 150 -250
1 Valve body
2 Valve seat
3 Bellow
2
4 Valve insert
5 Diaphragm
3
5
4
4 | © Danfoss | 2018.10
VD.LH.I4.02
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