Danfoss EV310B Data sheet
Data Sheet
Solenoid valve
Type EV310B
Direct-operated 3/2-way solenoid valves for universal use
EV310B covers a wide range of direct-operated
3/2-way solenoid valves for universal use.
EV310B is a real robust valve program with high
performance and can be used in all kind of
tough working conditions. Clip-on coils can not
be used on EV310B.
Features
• For water, oil, compressed air and similar
neutral media
• Screw on coil
• Ambient temperature: Up to 40 °C
• Coil enclosure (cable plug): Up to IP67
• Viscosity: Up to 50 cSt
AI206986429628en-000901
Features
EV310B
EV310B MAN
EV310B Flange MAN
Body material
Brass
Brass
Brass
DN [mm]
1.5-3.5
2.0
2.0
Function
NC, NO
NC, NO
NC
Connection
G⅛ - G⅜
G¼
Flange 32x32 mm
Sealing material
FKM
FKM
FKM
Kv [m3/h]
0.8-0.40
0.15
0.15
Dierential pressure range [bar]
0-20
0-16
0-16
Temperature range [°C]
-10 - 100
-10 - 100
-10 - 100
Manual override (MAN)
No
Yes
Yes
Solenoid valve, type EV310B
1 Portfolio overview
Table 1: Portfolio overview
© Danfoss | Climate Solutions | 2021.06 AI206986429628en-000901 | 2
NC: R(3)
NC: A(2)
1
2
3
4
Danfoss
32U1781.10
1234pAR
Coil
Armature
Closing spring
Valve plate
Pressure port (stamped: 1)
Application port (stamped: 2)
Relief port (3)
Solenoid valve, type EV310B
2 Functions
2.1 Function, NC
Coil voltage disconnected (closed):
When the voltage to the coil is disconnected, the armature with the valve plates is pressed down by the closing
spring and closes the connection between P and A. At the same time, the connection between ports A and R is
opened.
The connection between P and A will be closed for as long as the voltage to the coil is disconnected.
Coil voltage connected (open):
When voltage is applied, the armature with the valve plates is lifted and closes the connection between A and R. At
the same time, the connection between P and A is opened.
The connection between P and A will be open for as long as there is voltage to the coil.
2.2 Function, NO
Coil voltage disconnected (open):
When the voltage is disconnected, the armature with the valve plates is pressed down by the opening spring and
closes the connection between A and R. At the same time, the connection between ports P and A is open.
The connection between P and A will be open for as long as the voltage to the coil is disconnected.
On valves with manual override the connection between P and A can be closed using a closing screw in the valve
body.
Coil voltage connected (closed):
When voltage is applied to the coil, the armature with the valve plates is lifted and closes the connection between P
and A. At the same time, the connection between ports A and R is opened.
© Danfoss | Climate Solutions | 2021.06 AI206986429628en-000901 | 3
Danfoss
32U1782.10
1
2
3
4
NO: R(3) NO: A (2)
NO: P(1)
1234pAR
Coil
Armature
Opening spring
Valve plate
Pressure port (1)
Application port (stamped: 2)
Relief port (stamped: 3)
Solenoid valve, type EV310B
The connection between P and A will be closed for as long as there is voltage to the coil.
2.3 Function, NC FL MAN
Coil voltage disconnected (open):
When the voltage to the coil is disconnected, the armature, with the valve plates, is pressed down by the closing
spring and closes the connection between P and A. At the same time, the connection between ports A and R is
opened. The connection between P and A will be closed for as long as the voltage to the coil is disconnected. On
valves with manual override the connection between P and A can be opened using an opening screw in the valve
body.
Coil voltage connected (closed):
When voltage is applied, the armature with the valve plates is lifted and closes the connection between A and R. At
the same time, the connection between P and A is opened.
The connection between P and A will be open for as long as there is voltage to the coil.
© Danfoss | Climate Solutions | 2021.06 AI206986429628en-000901 | 4
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