Solenoid valves for water shut off and leak detection
Types EV220T, EV220W, EV220B, and EV228B
Solenoid valve range for water leak detection in
residential and industrial buildings:
• Houses and apartments
- Kitchen and bathrooms
• Commercial buildings
• Industrial buildings
Solenoid valves used for shut-off water supply to
prevent water damages from leaking systems.
Features and versions
y Clip-on coily Flow range for water in Kv: 0.7 - 40 m³ / hy Differential pressure: 0.3 – 16 bary Media temperature from 0 – 120 °Cy Ambient temperature: up to 80 °Cy Coil enclosure: IP65y Thread connections: From G 3/8 – G 2y DN 6 – 50y Water hammer dampedy Built-in filtery Adjustable closing time available
y EV220T 14-18, NC, polymery EV220W 10-22, NC, brassy EV220B 6 -12, NO, brass and DZR brassy EV220B 6 -12, NC, brassy EV220B 15-50, NO, brass and DZR brassy EV220B 15-50, NC, brassy EV228B 15-25, UN (Latching), DZR Brass
When voltage is disconnected, the armature
spring (2) presses the armature (3) down against
the pilot orifice (4). Pressure builds up over the
diaphragm (5) via the equalizing orifice (6). The
diaphragm closes the main orifice (7) as soon as
the pressure over the diaphragm equals the inlet
pressure. The valve stays closed for as long as
voltage remains disconnected.
Coil voltage connected (open)
When voltage is applied to the coil (1), the pilot
orifice (4) is opened. Since the pilot orifice is
larger than the equalizing orifice (6), pressure
over the diaphragm (5) falls and the diaphragm
is lifted clear of the main orifice (7). The valve
stays open for as long as the required minimum
differential pressure is present and voltage is
applied to the coil.
Data sheet | Solenoid valves for water shut off and leak detection, Types EV220T, EV220W, EV220B, and EV228B
Function, NC
1
2
3
4
5
6
7
Pos. no. Description
1
Coil
2
Armature spring
3
Armature
4
Pilot orifice
5
Diaphragm
6
Equalizing orifice
7
Main orifice
Dimensions and weight
Coil voltage disconnected (Closed)
When voltage is disconnected, the armature
spring (2) presses the armature (3) down against
the pilot orifice (4). Pressure builds up over the
diaphragm (5) via the equalizing orifice (6). The
diaphragm closes the main orifice (7) as soon as
the pressure over the diaphragm equals the inlet
pressure. The valve stays closed for as long as
voltage remains disconnected.
L1
L
Coil voltage connected (open)
When voltage is applied to the coil (1), the pilot
orifice (4) is opened. Since the pilot orifice is
larger than the equalizing orifice (6), pressure
over the diaphragm (5) falls and the diaphragm
is lifted clear of the main orifice (7). The valve
stays open for as long as the required minimum
differential pressure is present and voltage is
applied to the coil.
DesignIn accordance with UL 429
Insulation of coil windingsClass H according to IEC 85
ConnectionSpade connector in accordance with DIN 43650 form A
Enclosure, IEC 529IP00 with DIN spade connector, IP65 with cable plug
Plug typeCable plug (042N0156)
L without cable plugL with cable plugL with protective capWeight
[mm][mm][mm][kg]
4872640.10
Type, Form ACode no.
GDM 2011 (grey) cable plug according to DIN 43650-A PG11042N 0156
Data sheet | Solenoid valves for water shut off and leak detection, Types EV220T, EV220W, EV220B, and EV228B
Function, NO
1
2
8
3
4
6
7
5
Coil voltage disconnected (open):
When the voltage to the coil (8) is disconnected,
the pilot orifice (6) is open. As the pilot orifice is
larger than the equalizing orifice (4), the pressure
across the diaphragm (7) drops and therefore it
is lifted clear of the main orifice (5). The valve will
be open for as long as the minimum differential
pressure across the valve is maintained, and for
as long as the voltage to the coil is disconnected.
When voltage is applied to the coil, the valve
plate (3) is pressed down against the pilot orifice
(6). The pressure across the diaphragm (7) is built
up via the equalizing orifice (4). The diaphragm
closes the main orifice (5) as soon as the pressure
across the diaphragm is equivalent to the inlet
pressure. The valve will be closed for as long as
there is voltage to the coil.
Data sheet | Solenoid valves for water shut off and leak detection, Types EV220T, EV220W, EV220B, and EV228B
Function, NC
1
2
8
3
4
6
7
5
Coil voltage disconnected (closed):
When the supply voltage to the coil (8) is disconnected, the valve plate (3) is pressed down
against the pilot orifice (6) by the armature spring
(1). The pressure across the diaphragm (7) is built
up via the equalizing orifice (4). The diaphragm
closes the main orifice (5) as soon as the pressure
across the diaphragm is equivalent to the inlet
pressure. The valve will be closed for as long as
the voltage to the coil is disconnected.
When voltage is applied to the coil, the pilot
orifice (6) is opened. As the pilot orifice is larger
than the equalizing orifice (4), the pressure across
the diaphragm (7) drops and therefore it is lifted
clear of the main orifice (5). The valve is now open
and 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.
Coil voltage disconnected (open):
When the voltage to the coil (1) is disconnected,
the pilot orifice (4) is open. As the pilot orifice is
larger than the equalizing orifice (7), the pressure
across the diaphragm (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 the voltage to the coil is disconnected.
Coil voltage connected (closed):
When voltage is applied to the coil (1), the valve
plate (3) is pressed down against the pilot orifice
(4). The pressure across the diaphragm (5) is built
up via the equalizing orifice (7). The diaphragm
closes the main orifice (6) as soon as the pressure
across the diaphragm is equivalent to the inlet
pressure. The valve will be closed for as long as
there is voltage to the coil.
When the voltage is disconnected, the valve plate
(3) is pressed down against the pilot orifice (4) by
the armature spring (2). The pressure across the
diaphragm (5) is built up via the equalizing orifice
(7). The diaphragm closes the main orifice (6)
as soon as the pressure across the diaphragm 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
orifice (4) is opened. As the pilot orifice is larger
than the equalizing orifice (7), the pressure across
the diaphragm (5) drops and therefore it is lifted
clear of the main orifice (6). The valve is now
open for unimpeded flow and 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.
When – (minus) is supplied to the right terminal
pin and + (plus) to the left (see fig. a), the valve
plate is pressed down against the pilot orifice (4)
by the armature spring (2).
The pressure across the diaphragm (5) is built
up via the equalizing orifice (7). The diaphragm
closes the main orifice (6) as soon as the
pressure across the diaphragm is equivalent to
the inlet pressure. The valve will stay closed, until
the poles are switched (see fig. b).
–
+
+
Fig. b
Switching poles
When + (plus) is supplied to the right terminal
pin and – (minus) to the left (see fig. b), the pilot
orifice (4) is opened. As the pilot orifice is larger
than the equalizing orifice (7), the pressure across
the diaphragm (5) drops and therefore it is lifted
clear of the main orifice (6). The valve is now
open for flow and will stay open as long as the
minimum differential pressure across the valve
is maintained, until the poles are switched back
(see fig. a).
DesignIn accordance with VDE 0580
Insulation of coil windingsClass H according to IEC 85
ConnectionSpade connector in accordance with DIN 43650 form A
Enclosure, IEC 529IP00 with spade connector, IP20 with protective cap, IP65 with cable plug
Duty ratingContinuous
Plug typeCable plug (042N0156)
Type, Form ACode no.
GDM 2011 (grey) cable plug according to DIN 43650-A PG11042N 0156
EEC Electronic coil controller
Type
BE240CS-25 – 55
Tambient
[°C][V][Hz][W]
EEC electronic coil controller for solenoid valves,
type EV220B.
The EEC gives the coil a short over-boost, and
controls the armature speed:
y Low power consumption (holding power: 4 W)y Reduced noise during operationy Increased MOPD compared to standard coilsy Increased lifetime of the solenoid valvey Enclosure: