Danfoss VFY-LA Data sheet
Data sheet
Butterfly valve with electrical actuator
VFY-LA
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
• Manual operation
• Position indicator
• Torque limiter
• Complete installation from factory - ready for
installation
Main Data:
• DN 50-350
• kVS 79-8520 m3/h
• PN 16
• EPDM Liner
• Stainless steel or Ductile iron Epoxy Coated
disc
• Medium:
- Circulation water, drinking water or chilled
glycolic water up to 50 %
• Medium temperature:
−10 … 130 °C (SS disc)
• Nominal voltage:
- 24 V; 50 Hz/60 Hz
• Control input signal: On/Off or 3-point
• Torque: 20-600 Nm
• Grade of enclosure: IP66/68
• Ambient temperature: −10 … 55 °C
• Duty rating IEC34: cycle S4 (50 % )
• Approvals:
Ordering
Typ e VFY-LA 24 V
Picture DN
k
VS
(m3/h)
50 79
65 174 082X3001
80 275 7 082X3002
100 496 12 082X3003
125 883 12 082X3004
150 1212 12 082X3005
200 2500 30 082X3006
250 3948 60 082X3007
300 5635 38 082X3008
350 8520 38 082X3009
PN
16 130
T
(°C)
max
Opening time
(s)
12
Disc Code No.
082X3000
Stainless
Steel
© Danfoss | 2021.12 AI399435509284en-GB0101 | 1
Data sheet VFY-LA
−10 … 130 (see PT diagram)
Lug (Tapped lugs)
Zinc coated S. + PTFE
Ordering (continuous)
Spare parts
Replacement actuator AMB-Y
Actuator
type
ER20 50/65 20 12 15
ER35 80 35 7 45 082G7389
ER60 100 60 12 45 082G7390
ER60 125 -150 60 12 45 08 2G7414
VS15 0 200 15 0 30 45 082G7399
VS300 250 300 60 45 082G7393
Note:
Contact Danfoss s ales organization regardi ng information about rep lacement actuators for V FY butterfly valve s purchased before
01/2015.
for DN Torque
Opening time
(s)
Power
consumption
(W)
Supplay
voltage
(V)
24 V
Code No.
082G7388
Replacement Liner VFY-L Liner
DN PN Liner Code No.
50
65 065B7583
80 065B758 4
100 065B7585
125 0 65B7578
150 0 65B7579
200 065B7592
250 065B7593
300 065B7594
350 065B7591
16 EPDM
065B7582
Technical data
Actuator
Power supply DN 50-250 V 15-30 ac; 12-48 dc
Frequency (AC) Hz 50/60
Control Input DN 50-350 on/off or 3-point
Torque Nm 20-600
Ambient temperature °C −10 … 55
Duty Rating IEC34 S4 (50 %)
Grade of enclosure
- marking in accorance with standards
DN 50-150 IP66
DN 200-350 IP68 (1m, 72h)
Low voltage directive (LVD) 2006/95/EC: EN61000-3-2, EN61000-3-3, EN61000-6 -4,
EN61000-6-2
EMC Direct ive 2004/10 8/EC: EN61010 -1
Valve
Nominal diameter DN 50-350
kVS value m3/h 79-8520
Rotation angle 90°
Leakage rate Acc. to PED 2014/68/EU, EN 12266-1, Rate A
Nominal pressure PN 16
Medium Circulation water, drinking water, chilled glycolic water up to 50%
Medium temperature SS disc
Connection
Mounting Mounting deadline
Material
Body
Disc 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
1)
No visible defe ctable leakage during th e testing procedure.
DN 50-150 Cast iron EN GJL 250 (DIN GG25)
DN 200-350 Ductile iron (DIN GGG40)
o
C
1)
2 | AI399435509284en-GB0101 © Danfoss | 2021.12
Data sheet VFY-LA
10
15
20
25
30
∆PP
0
2777,8
1111,1
1666,7
2222,2
1388,9
FLOW Pressure drop kPa (100 kPa = 1 bar = ~ 10m HFLOW Pressure drop kPa (100 kPa = 1 bar = ~ 10m H
2
O)O)
P-T diagram
Pressure (bar)
5
Headloss diagram
For water at 20°C
0
10
2,8
20
5,6
30
8,3
11,1
16,7
22,2
27,7
41,7
55,6
69,4
83,3
111,1
138,9
166,7
222,2
277,8
417,7
555,6
694,4
833,3
40
60
80
100
150
200
250
300
400
500
600
800
1000
1500
2000
2500
3000
4000
5000
6000
8000
10000
30 50 70 90 100 110 120 130
10 -10 0
Temperature (°C)
2
10020 30 401072345 60 8015681,5
∆
DN
50
65
80
10
125
150
200
250
300
350
l/sec m3/h
Flow Rate
(liquid with specific a gravity of 1)
AI399435509284en-GB0101 | 3© Danfoss | 2021.12
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