Servo-operated 2/2-way solenoid valves
Type EV220B 65 - EV220B 100
EV220B 65 - EV220B 100 is a 2/2-way solenoid
valve program for use in robust industrial
applications, demanding high flow rates.
The valve is designed with cast iron valve
body and flanged connection.
Water-hammer damped design and built-in pilot
filter ensures a reliable operation.
Featuresy For water and similar neutral media
y Flow range for water KV: 50 - 130 m³/hy Ambient temperature: Up to 80 °Cy Differential pressure: Up to 10 bary Viscosity: Up to 50 cSty Coil enclosure: Up to IP67
y Flange connections: 2 ½, 3 and 4”y Water hammer dampedy Built-in filter for protection of pilot systemy Seal material: EPDM and NBR
Data sheet | Solenoid valves, type EV220B 65 - EV220B 100
Function
7
2
3
4
1. Armature
2. Closing spring in pilot system
3. Valve plate
4. Pilot orifice
5. Servo piston
6. Main orifice
7. Coil
8. Equalizing orifice
8
Coil voltage disconnected (closed):
When the voltage is disconnected, the valve plate
(3) is pressed down against the pilot orifice (4) by
the pilot system’s closing spring (2).
The pressure across the servo piston (5) is built
up via the equalizing orifice (8). The servo piston
closes the main orifice (6) 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.
5
6
Coil voltage connected (open):
When voltage is applied to the coil (7), the
armature (1) and the valve plate (3) are lifted
clear of the pilot orifice (4). As the pilot orifice is
larger than the equalizing orifice (8), the pressure
across the servo piston (5) drops and therefore it
is lifted clear of the main orifice (6).
The valve will be open for as long as the
minimum differential pressure across the valve is
maintained, and for as long as there is voltage to
the coil.
2 ½ weld type 11 according to DIN EN 1092-1EV220B 65027N3065
3 weld type 11 according to DIN EN 1092-1EV220B 80027N3080
4 weld type 11 according to DIN EN 1092-1EV220B 100027N3100
Seal materialDescriptionCode number
EPDM
Manuel override kit. used for manuel overrride in event of power failure.]
Note: Valve height is increased by 16 mm
032U7390
AI243586443728en-000901| 4
H
D
Data sheet | Solenoid valves, type EV220B 65 - EV220B 100
Dimensions and weight
Dimensions
Type
L
[mm]
L
1
[mm]
Required
min. L2*
(mm)
B1 [mm]
Coil type
BB/
BE
BG
øD
[mm]
H1
[mm]
[mm]
H2
Weight
without
coil
[kg]
Required
min. inside
tube diameter
d** (mm)
EV220B 653202243004666185851852465
EV220B 803702653504666200932153480
EV220B 100430315400466622010324044100
70
d
100
min.L2min.L2
1
H
L1
L
*Avoid closing problems caused by turbulent flow it is required to have a straight tube on both sides of the
valve.
** Required to keep same tube size for entire application, same or bigger inside diameter as valve orifice
65 / 80 / 100 mm
Data sheet | Solenoid valves, type EV220B 65 - EV220B 100
Periodic maintenance/inspection
Maintenance/Inspection every 6 to 12 months recommended.
Before starting maintenance/inspection be sure:
- Coil is not energized when removed from the armature tube.
- System/solenoid valve is not pressurerised. Eventually close ball valves on each side of the valve.
– Be sure any pumps one the upstream (inlet supply) will not be energized or a pressure sensor or switch will not start the pump.
- After cleaning and service, eventually with Danfoss spare part kit, it is recommended to lubricate piston and piston sealing with a
thin layer of lubrication included into the spare part kit.
Frequency and maintenance depend largely on the application and the medium used in the valve. Mechanical contaminants, iron,
excessive mineralization, through the valve or may cause problems with the operation of the valves. All maintenance and repair work
should be carried out by technically trained personnel who are familiar with the operation of the installation.
In case of large impurities visible on the filter, piston scale and cover, other impurities inside the valve, the frequency of inspections