Danfoss EV245B Data sheet

Page 1
Data Sheet
Solenoid valve Type EV245B
Servo piston operated for steam applications
EV245B is a servo piston operated 2/2-way solenoid valve for use in steam applications.
The servo piston operated design with PTFE seal on the main orice and steel valve plate in the armature secures a reliable function and long life in steam applications.
Features and versions
Specically designed for steam applications, 160 - 185 °C
• Clip on coil
• Ambient temperature: Up to 40 °C
• Coil enclosure: IP65
• EV245B used with BQ coil
AC voltage up to 185 °C
• EV245B used with BN coil
DC voltage up to 160 °C
• EV245B used with BB coil
AC voltage up to 160 °CDC voltage up to 140 °C
• Connection: ISO 228/1
AI247086497359en-000801
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Features
EV245B
Body material
Brass
DN [mm]
15 - 20
Connection
G1/2'' - G3/4''
Sealing material
PTFE
Function
NC
Kv [m3/h]
4.5 - 5.5
Dierential pressure range [bar]
0.1-10
Temperature range [°C]
0-185
Solenoid valve, Type EV245B
1 Portfolio overview
Table 1: Portfolio overview
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1.2.3.4.5.6.7.8.Coil
Valve plate
Pilot orice
Armature spring
Equalizing orice
Diaphragm
Main orice
Closing spring
Solenoid valve, Type EV245B
2 Function
2.1 Function NC
Coil voltage disconnected (closed)
When the voltage is disconnected, the valve plate (2) is pressed down against the pilot orice (3) by the armature spring (4). The pressure across the piston (6) is built up via the equalizing orice (5). The piston closes the main orice (7) as soon as the pressure across the piston is equivalent to the inlet pressure. The valve will be closed for as long as the voltage to the coil is disconnected.
Coil voltage connected (open)
When voltage is applied to the coil (1), the pilot orice (3) is opened. As the pilot orice is larger than the equalizing orice (5), the pressure across the piston (6) drops and therefore it is lifted clear of the main orice (7). The valve is
now open for unimpeded ow and will be open for as long as the minimum dierential pressure across the valve is maintained, and for as long as there is voltage to the coil.
Figure 1: Function NC
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Danfoss
32U1460
ON
OFF
24h
Danfoss
32U9100
Solenoid valve, Type EV245B
3 Applications
It is recommended to use a lter in front of the valve. Recommended lter 50 mesh (297 microns).
Figure 2: Filter
In water applications, exercise the valves at least once every 24 hours, meaning change the state of the valve. The valve exercise will minimize the risk of the valve sticking due to calcium carbonate, zinc or iron oxide build-up.
Figure 3: Exercise: Valve on/o
To minimize scaling, and corrosion attack it is recommended that the water passing the valve have the following values:
• Hardness 6-18 °dH to avoid scaling (chalk / lime stone build up).
• Conductivity 50 – 800 µS/cm to avoid brass dezincication and corrosion.
• Above 25°C media temperature avoid stagnant water inside the valve to avoid dezincication and corrosion attack.
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Media
PTFE
Steam
Media temperature [°C]
BQ
0-185°C
BB AC BN DC
0-160°C BB DC
0-140°C
Ambient temperature [°C]
Max. 40 °C at a medium temperature of 185 °C
Kv value [m3/h]
DN15
4.5 m3/h
DN20
5.5 m3/h
Min. Opening dierential pressure [bar]
0.1 bar
Max. Opening dierential pressure [bar]
Up to 10 bar
Max. working pressure [bar]
Up to 10 bar (Equal to max. working pressure)
Max. test pressure [bar]
25 bar
Viscosity [cSt]
Max. 50 cSt
Connection ISO228/1
Coil type BQ AC
Coil type BN DC
Coil type BB AC
Coil type BB DC
[Bar]
[Bar]
[Bar]
[Bar]
G1/2
0.1-10
0.1-5
0.1-5
0.1-3.6
G3/4
0.1-10
0.1-5
0.1-5
0.1-3.6
Solenoid valve, Type EV245B
4 Product specication
4.1 Technical data
Table 2: Technical data
Dierential pressure range
Table 3: Dierential pressure range
Steam capacity diagrams
Example:
Capacity for EV245B 20BD inlet pressure (p1) of 6 bar absolute, at dierential pressure at 1 bar. Approx. 100kg/h/80kW
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Main type
EV245B 15 – 20
Time to open [ms]
(1)
200
Time to close [ms]
(1)
2000
Components
Materials
Specications
Valve body/cover
Brass
EN 12165, CW 617N
Armature/armature stop
Stainless steel
W. no. 1.4105 / AISI 430FR
Armature tube
Stainless steel
W. no. 1.4306 / AISI 304L
Springs
Stainless steel
W. no. 1.4310 / AISI 301
Piston seal
PTFE
Piston ring
PTFE with
grate
Valve plate
Stainless steel
W. no. 1.4122
External gasket
PTFE
Solenoid valve, Type EV245B
Figure 4: Steam capacity diagrams
Time to open/close
Table 4: Time to open/close
(1)
(1)
The times are indicative. The exact times will depend on the pressure conditions.
The times are indicative. The exact times will depend on the pressure conditions.
Materials
Table 5: Materials
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Type
LBH
H1H
2
Weight gross
valve body with
coil BQ, BB
Weight gross
valve body with
coil BN
[mm]
[mm]
[mm]
[mm]
[mm]
[kg]
[kg]
EV245B 15B
80.55712424100
0.75
1.03
EV245B 20B
80.55712424100
0.72
1.00
67
65
Danfoss
32U1702.11
Coil type BQ, BB
Coil type BQ, BB
32U1701.eps,32U1702_11.eps
Danfoss
32U1778.10
Solenoid valve, Type EV245B
4.2 Dimension and weight
Table 6: Dimension and weight
Table 7: Dimension
4.3 Mounting
Figure 5: Mounting angle
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ISO228/1 connection
Orice
Kv value
Function
[mm]
[m3/h]
NC
G1/2
15
4.5
032U3833
G3/4
20
5.5
032U3853
Type
Tambient
Supply voltage
Voltage
variation
Frequency
Power consumption
Approval
Code no.
[°C]
[V]
[Hz]
[W]
[VA]
BQ024CS
-40 – 40 24
-15%, 10%5010
17
018F4517
24
-15%, 10%
60
9.0
16
BQ120BS
40 – 40
110 / 120
-15%, 6%6013.5
19
018F4519
BQ240CS
-40 – 40
230
-15%, 6%5010
17
018F4511
208 / 240
-6%, 6%609.5
16
Type
Tambient
Supply voltage
Voltage
variation
Frequency
Power consumption
Approval
Code no.
[°C]
[V]
[Hz]
[W]
[VA]
BN024DS
-40 – 5024±10%DC20
018F6968
Solenoid valve, Type EV245B
5 Ordering
5.1 Parts program
Table 8: Brass, valve body NC
5.2 Accessories
Coil
Coil type BQ AC Steam coil to 185 °C
Figure 6: Coil type BQ AC
Table 9: Coil type BQ AC Steam coil to 185 °C
Coil type BN DC Steam coils to 160 °C
Figure 7: Coil type BN DC
Table 10: Coil type BN DC Steam coils to 160 °C
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Type
Tambient [°C]
Supply voltage
[V]
Voltage variation
Frequency [Hz]
Power consumption
Code no.
[W]
[VA]
BB024AS
-40 – 80
24
-15%, 10%501119018F7358
BB115AS
-40 – 80
115
-15%, 10%501119018F7361
BB230AS
-40 – 80
220 / 230
-15%, 10%501119018F7351
BB240AS
-40 – 80
240
-15%, 10%501119018F7352
BB440CS
-40 – 80 400
±10%5014
24
018F7353
440
±10%601524BB024BS
-40 – 80
24
-15%, 10%601423018F7365
BB110CS
-40 – 50 110
±10%5015
28
018F7360
110
±10%6013
22
BB230CS
-40 – 50
220 / 230
±10%6013
24
018F7363 220 / 230
±10%5016
31
Type
Tambient [°C]
Supply voltage
[V]
Voltage variation
Frequency [Hz]
Power consumption
Code no.
[W]
[VA]
BB012DS
-40 – 5012±10%DC14
018F7396
BB024DS
-40 – 5024±10%DC16
018F7397
Cable plug size
Description
Code no.
DIN 18
Cable plug IP67
042N1256
Solenoid valve, Type EV245B
Coil type BB AC Steam coils to 160 °C
Figure 8: Coil type BB AC
Table 11: Coil type BB AC Steam coils
Coil type BB DC Steam coils to 140 °C
Table 12: Coil type BB DC Steam coils
Cable plug
Figure 9: Cable plug
Table 13: Cable plug
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1.
2.
3.
Type
Voltage
Suitable for coil types
Code no.
[v]
BA024A
24 - 240
AL, AM, AS, AZ, BA, BD, BB
042N0185
Type
Seal material
PTFE
EV245B (Coil: BQ, BN, BB, BR)
032U3121
1
2
3
Spring Assembled armature tted on piston Gasket PTFE
Solenoid valve, Type EV245B
Universal electronic multi-timer, Type ET 20 M
Figure 10: Type ET 20 M
Table 14: Universal electronic multi-timer, Type ET 20 M
Spare part
Table 15: Spare part kits for EV245B 15-20
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