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1. 1VD.HD.S3.02 © Danfoss 09/2013DEN-SMT/SI
Butterfly valves with gear box
VFY-WG, VFY-LG
Data sheet
Ordering
Description Features:
• Spline driven one piece shaft connected to
spherically machined disc allows high torque
transmission i.e. quick response and minimum
back-lash
• Long term reliability due to upper and lower
anti-friction bearings
• Safe maintenance: shaft blow out protection
with circlip
• Position indicator
Main Data:
• DN 50-350
• kVS 79-8520 m3
/h
• PN 16
• EPDM Liner
• Stainless steel or Polyamid coated disc
• Medium:
- Circulation water, drinking water or chilled
glycolic water up to 50 %
• Medium Temperature:
−10 … 120 °C
• Wafer or Lug connection
• Approvals
PED 97/23/CE
Wafer type VFY-WG
Picture DN
kVS
PN
Tmax
Disc Code No.
(m3
/h) (°C)
XX
X
50 79
16 120 Stainless Steel
065B7440
65 174 065B7441
80 275 065B7442
100 496 065B7443
125 883 065B7444
150 1212 065B7445
200 2500 065B7446
250 3948 065B7447
300 5635 065B7448
350 8520 065B7449
50 79
16 120 Polyamid Coating
065B7430
65 174 065B7431
80 275 065B7432
100 496 065B7433
125 883 065B7434
150 1212 065B7361
200 2500 065B7362
250 3948 065B7363
300 5635 065B7364
350 8520 065B7435

2. 2 VD.HD.S3.02 © Danfoss 09/2013 DEN-SMT/SI
Data sheet Butterfly valves with gear box VFY-WG, VFY-LG
Lug type VFY-LG
Picture DN
kVS
PN
Tmax
Disc Code No.
(m3
/h) (°C)
XX
XX
DN XX
XX XX
50 79
16 120 Stainless Steel
065B7460
65 174 065B7461
80 275 065B7462
100 496 065B7463
125 883 065B7464
150 1212 065B7465
200 2500 065B7466
250 3948 065B7467
300 5635 065B7468
350 8520 065B7469
50 79
16 120 Polyamid Coating
065B7451
65 174 065B7452
80 275 065B7453
100 496 065B7454
125 883 065B7455
150 1212 065B7376
200 2500 065B7377
250 3948 065B7378
300 5635 065B7379
350 8520 065B7456
Ordering
Replacement butterfly valve VFY-WB (wafer type)
DN PN Disc Code No.
50
16 Stainless steel
065B7545
65 065B7546
80 065B7547
100 065B7548
125 065B7549
150 065B7550
200 065B7551
250 065B7552
300 065B7553
350 065B7554
50
16 Polyamid coated
065B7382
65 065B7383
80 065B7384
100 065B7385
125 065B7386
150 065B7387
200 065B7388
250 065B7389
300 065B7390
350 065B7391
Replacement Disc VFY-Disc
DN PN Disc Code No.
50
16 Stainless steel
065B7567
65 065B7568
80 065B7569
100 065B7570
125 065B7571
150 065B7572
200 065B7573
250 065B7574
300 065B7575
350 065B7576
50
16 Polyamid coated
065B7555
65 065B7556
80 065B7557
100 065B7558
125 065B7559
150 065B7560
200 065B7561
250 065B7562
300 065B7563
350 065B7564
Replacement Liner VFY-Liner
DN PN Liner Code No.
50
16 EPDM
065B7582
65 065B7583
80 065B7584
100 065B7585
125 065B7586
150 065B7587
200 065B7588
250 065B7589
300 065B7590
350 065B7591
Replacement gearbox VFY-Gearbox
for DN Code No.
50/65/80/100 065B7595
125/150 065B7596
200 065B7597
250 065B7598
300 065B7599
350 065B7600
Spare parts

3. 3VD.HD.S3.02 © Danfoss 09/2013DEN-SMT/SI
Not recommendedPossiblePossibleRecommended
Data sheet Butterfly valves with gear box VFY-WG, VFY-LG
Technical data Type VFY-WG VFY-LG
Nominal diameter DN 50-350
kVS value m3
/h 79-8520
Rotation angle 90 °
Leakage rate Acc. to PED 97/23/CE, EN 12266-1, Rate A 1)
Nominal pressure PN 16
Medium Circulation water, Glycolyc water up to 50 % or drinking water
Medium temperature °
C −10 ... 120
Connection Wafer (centering lugs) Lug (Tapped lugs)
Mounting mounting between flanges mounting deadline
Material
Body
Cast iron EN GJL 250 (DIN GG25) DN 50-300 Cast iron EN GJL 250 (DIN GG25) DN 50-150
Ductile iron (DIN GGG40) DN 350 Ductile iron (DIN GGG40) DN 200-350
Disc Ductile iron EN GJS 400-15 (DIN GGG 40) with Polyamid coating or Stainless Steel
Shaft Stainless steel AISI 420
Liner EPDM
Circlip Steel XC 75 / Stainless steel
O-ring Nitrile/Viton
Upper guide bush Zinc coated S. + PTFE
Lower guide bush Zinc coated S. + PTFE
Gear box Aluminium
1)
No visible defectable leakage during the testing procedure
Installation positions

4. 4 VD.HD.S3.02 © Danfoss 09/2013 DEN-SMT/SI
2-3DN
DN
1DN
DN
2-3DN
DN
1DN
DN
5-6DN
1 DN
DN
2-3DN
1 DN
DN
0
5
10
15
20
25
30
30 50 70 90 100 110 12010-10 0
Temperature (°C)
Pressure(bar)
Data sheet Butterfly valves with gear box VFY-WG, VFY-LG
Installation conditions It is recommended that distances indicated
below are respected in order to prolong lifetime
of the valve. Mounting the valve close to
pipework junctions (turbulent zones) increases
wear.
P-T diagram

5. 5VD.HD.S3.02 © Danfoss 09/2013DEN-SMT/SI
100
DN
10020 30 401072 3 4 5 60 80156 81,5 ∆P
1000
150
200
250
300
400
500
600
800
10000
2000
3000
4000
6000
8000
5000
2500
1500
50
65
80
100
125
150
200
250
300
80
60
40
30
20
10
27,7
277,8
41,7
55,6
69,4
83,3
111,1
138,9
166,7
222,2
2777,8
555,6
833,3
1111,1
1666,7
2222,2
1388,9
694,4
417,7
22,2
16,7
11,1
8,3
5,6
2,8
FLOW Pressure drop kPa (100 kPa = 1bar = ~ 10m H2
O)
l/sec m3
/h
Flow Rate
(liquid with specific a gravity of 1)
350
Data sheet Butterfly valves with gear box VFY-WG, VFY-LG
Headloss diagram
For water at 20 °C

6. 6 VD.HD.S3.02 © Danfoss 09/2013 DEN-SMT/SI
9
5
6
7
3
2
4
8
1
Data sheet Butterfly valves with gear box VFY-WG, VFY-LG
Design
1. Body
2. Disc
3. Shaft
4. Liner
5. Circlip
6. O-ring
7. Upper guide bush
8. Lower guide bush
9. Gear box

7. 7VD.HD.S3.02 © Danfoss 09/2013DEN-SMT/SI
Dimensions
D
Ø DN
C
BA
Ø E
D
AB
C
Ø DNDN
Ø E
Waffer type VFY-WG
DN
A B C D ØE Weight
mm (kg)
50 62 225,5 120 43 125 3,6
65 70 234,5 120 46 125 4
80 89 240,5 120 46 125 4,3
100 106 264,5 120 52 125 6,3
125 120 279,5 120 56 125 7,4
150 131 292,5 120 56 125 8,5
200 164 373,5 197 60 200 16,5
250 200 399 197 68 200 22,9
300 235 459 239 78 250 34,3
350 270 468 239 78 250 41,4
Lug type VFY-LG
DN
A B C D ØE Weight
mm (kg)
50 62 225,5 120 43 125 4
65 70 234,5 120 46 125 4,5
80 89 240,5 120 46 125 5,4
100 103 264,5 120 52 125 7,9
Lug type VFY-LG
DN
A B C D ØE Weight
mm (kg)
125 119 279,5 120 56 125 9,9
150 133 292,5 120 56 125 11,9
200 168 373,5 197 60 200 22,9
250 198 399 197 68 200 29,6
300 227 459 239 78 250 41,3
350 248 468 239 78 250 49,7
BA
D
DN
ØEC
Data sheet Butterfly valves with gear box VFY-WG, VFY-LG

8. 8 VD.HD.S3.02 Produced by Danfoss A/S © 09/2013
Data sheet Butterfly valves with gear box VFY-WG, VFY-LG