Danfoss VFS 2 Data sheet
Data sheet
Seated valve for steam (PN 25)
VFS 2 – Two way valve, flange
Description
VFS 2 valve is a range of 2 port flanged valve
for chilled water, LPHW, MPHW, HPHW (low,
medium or high pressure hot water) and steam
applications.
The valve is designed to be combined with
following actuators:
• DN 15-50 AMV(E) 25 (SU/SD), AMV(E) 35,
AMV(E) 56 (with clutch "065Z7551")
• DN 65-100 AMV(E) 55, AMV(E) 56, AMV(E) 85,
AMV(E) 86, AMV (E) 65x
Features:
• Logarithmic characteristic
• Rangeability R= >100:1 by DN 20-100
• Suitable for steam applications
Main data:
• DN 15-100
• kVS 0.4 -145 m3/h
• PN 25
• Down to close
• Medium:
Circulation water/glycolic water up to 50 % /
steam (max. p = 6 bar)
• Temperature:
1)
At temperature s from −10 °C up to +2 °C use stem heater
2 (10
1)
) … 200 °C
• Logarithmic characteristic
• Flange PN 25 connections
• Compliance with Pressure Equipment Directive
2014/6 8/EU.
Ordering
Example:
Two way valve, DN 15, kVS 1.6, PN 25,
T
200 °C, flange connection
max
- 1× VFS 2 DN 15 valve
Code No.: 0 65B1513
Two way valve VFS 2
k
DN
15
20 6.3 06 5B1520
25 10 06 5B1525
32 16 0 65B1532
40 25 06 5B1540
50 40 065B1550
65 63 065B3365
80 100 0 65B3380
100 145 065B3400
VS
(m3/h) (°C)
0.4
0.63 06 5B1 511
1.0 06 5B1512
1.6 06 5B1513
2.5 06 5B1514
4.0 06 5B1515
PN
25 200
T
max.
065 B1510
Code No.
Spare parts – stuffing box
DN Description Co de No.
15
20
25
32
40
50
65
100
Four PTFE rings
Seal for valve cover
Gland ring
Washer
Instructions
Three PFTE rings
Gland ring
Instructions
065B0001
065B000680
Accessories
Typ e Code No.
Stem heater 24 V AC/DC
(AMV(E) 25, 35 and VFS 2 valves DN 15-50)
Stem heater 24 V AC/DC
(AMV(E) 56 and VFS 2 valves DN 15-50)
Stem heater 24 V AC/DC
(AMV(E) 85, 86 and and VFS 2 valves DN
65-100)
Stem heater 24 V AC/DC
(AMV(E) 55, 56, 655, 658, 659 and VFS 2
valves DN 65-100)
Adapter AMV(E) 25 (SU/SD), AMV(E) 35
and VFS 2 DN 15-50
(for media temperatures over 150 °C)
Clutch
(AMV(E) 56 and VFS 2 valves DN 15-50)
06 5B2171
065Z7020
065Z7021
065Z7022
065Z 7548
065Z7551
© Danfoss | 2022.01 AI094186477177en-010404 | 1
Data sheet Two way valve VFS 2
Technical data
Nominal diameter DN 15 20 25 32 40 50 65 80 100
kVS value m3/h 0.4 0.63 1.0 1.6 2.5 4.0 6.3 10 16 25 40 63 100 145
Stroke mm 15 40
Rangeability > 3 0:1 > 50:1 > 10 0:1
Control characteristic Logarithmic
Cavitation factor z 0.5 0.5 0.5 0.5 0. 5 0.5 0.4 0.3 0.3
Leakage acc. to standard IEC 534
< 0.05 % of k
VS
Nominal pressure PN 25
Medium Circulation water/glycolic water up to 50 % /steam (max. ∆p = 6 bar)
Medium pH Min. 7, max. 10
Medium temperature °C 2 (–101)) … 200
Connections Flange ISO 7005-2
Materials
Ductile iron
Body and cover Ductile iron EN- GJS-400 -18-LT (GGG 40.3)
EN-GJS-400-15
(GGG 40)
Cone, seat and spindle Stainless steel
Gland seal Replaceable PTFE rings
1)
At temperature s from -10 °C … +2 °C use stem heater .
Pressure temperature diagram Valve characteristics-logarithmic
DN 15-50: EN-GJS -400-18-LT (GGG-4 0.3) PN 25
DN 65-100: EN- GJS-400 -15 (GGG-40) PN 25
Max. closing pressure1) and recommended Δp
Capacity
2)
-way
2
Stroke
AB
A
Valve Actuator
DN
15
Stroke
(mm)
AMV(E) 25
[AMV(E) 25 SU/SD]
25 [223)] 25 -
15 (kVS 4.0) 25 [163)] 20 -
20 25 [103)] 13 -
25 16 [53)] 8 -
15
32 9 [2.53)] 5 -
40 6 [23)] 3 -
50 3 [0.53)] 2 -
65
80 - - 3 2 8 3
40
- - 4.5 3 13 4.5
AMV(E) 35 AMV(E) 55 AMV(E) 56 AMV(E) 85, 86 AMV(E) 65x
3)
max. closing pressure 1) (bar)
4)
25
4)
25
4)
25
4)
21
4)
12
4)
8
4)
5
- -
- -
- -
- -
- -
- -
- -
100 - - 1.5 1 5 1. 5
Note:
1)
Max. Δp is t he physical limit of diffe rential pressure the valve will cl ose against. Max. Δp for ste m application is 6 bar.
2)
The recommen ded Δp is based on the generati on of noise, plug erosion e tc.
Max. re commended Δp is 4 bar.
If max. c losing pressure is smaller tha n 4 bar than the recommended Δ p is the same as closing Δp.
3)
Values in parenth eses [ ] are based on the force of the ac tuator AMV(E) 25 SU/SD only.
4)
With stem connec tor (On request)
2 | AI094186477177en-010404 © Danfoss | 2022.01
Data sheet Two way valve VFS 2
Installation
T
≤150 °C for AMV(E) 25 (SU/SD), 35
max
T
≤200 °C for other AMV(E)
max
AMV(E) 25(SU/SD)/35
AMV(E) 55/56 AMV(E) 65x
T
= 150 ... 200 °C AMV(E) 25 (SU/SD), 35
max
AMV(E) 85/8 6
Valve mounting
Before mounting the valve be sure that the pipes
are clean and free from abrasion.
It is essential that the pipes are lined up squarely
with the valve at each connection and that they
are free from vibrations.
Adapter for
VFS 2 DN 15 -50
Always install the valve with the arrow on the
body in the same direction as the ow. In order to
avoid turbulence, which will aect the measuring
accuracy, it is recommended to have a straight
length of pipe up and down stream from the
valve as shown (D - diameter of pipe).
Install the motorized control valves with the
actuator in a vertical or horizontal position in
accordance to recommendations described in
Installation above.
Note that the actuator may be rotated up to 360°
with respect to the valve body by loosening the
retaining fixture. After this operation retighten.
Leave sufficient clearance to facilitate the
dismantling of the actuator from the valve body
for maintenance purposes.
Note that the actuator may be rotated up to 360°
with respect to the valve body by loosening the
retaining fixture. After this operation retighten.
AMV(E)
FVR/FVF
2D
5D
Note:
Install a strainer upstream of the valve
(e.g. Danfoss FVR/FVF)
AI094186477177en-010404 | 3© Danfoss | 2022.01
Loading...