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EV251B 2/2-Way Solenoid Valve
Brand: DanfossEV251B with assisted lift is especially suitable for applications such as closed systems with low and fluctuating pressure conditions or open systems with differential pressure down to 0 bar.
EV251B valves are supplied complete, including coil and plug.
Features- For water, oil, compressed air and similar neutral media
- Flow range: 1.5 to 3.5 m³/hr
- Differential pressure: 0 to 10 bar
- Media temperature: From -10° to 90° C
- Ambient temperature: Up to 80° C
- Coil enclosure: IP 65
- Thread connections: From G 3/8" to G 1"
- DN 10 to 22
- Viscosity: Up to 50 cSt
- Brass NBR version, NC
Specifications
Brand
Ambient Temperature Range
- 24 Vdc Coil: 50° C (122° F) - Max.
- 24/230 Vac Coil: 80° C (176° F) - Max.
Applications
- Closed Systems with Low & Fluctuating Pressure Conditions
- Open Systems with Differential Pressure down to 0 bar
Approvals & Certifications
- CE
BSP Connection
- G 1" Female
- G 1/2" Female
- G 3/4" Female
- G 3/8" Female
Coil Voltage
- 230 V 50 Hz
- 24 V 50 Hz
- 24 Vdc
Consumption
- 10 W AC - Power Consumption
- 18 W DC - Power Consumption
Diaphragm Material
- NBR
Differential Pressure
- psi: 0 to 145 (kPa: 0 to 1,000, bar: 0 to 10)
Electrical Connectors
- DIN Connector (DIN 43650-A)
Electrical Contacts
- Normally Closed
Enclosure, Body Material
- Brass (W. No. 2.0402)
Environmental Protection
- IP00
- IP20
- IP65
Flow Rate
- 0.88 to 2.06 scfm (1.5 to 3.5 m³/hour)
Function
- Start with Pulse
Interval Time
- 1 to 45 minutes
Materials of Construction
- Armature Tube (1.4306 / AISI 304L), Armature & Armature Stop (1.4105 / AISI 430FR): Stainless Steel
- Valve Plate: NBR
Maximum System Pressure
- psi: 232.1 (kPa: 1,600, bar: 16)
- psi: 725.2 (kPa: 5,000, bar: 50)
Media
- Compressed Air
- Oil
- Water
Mounting Position
- Vertical
O-Ring Material
- NBR (Only EV251B 10, Other Versions are without O-Ring)
Operating Temperature
- -10° to 50° C (14° to 122° F) - Ambient Operating Temperature
Override
- Manual Override (Test Button)
Power
- 20 W Max.
Process Temperature
- -10° to 90° C (14° to 194° F)
Response Time
- 300 to 500 ms - Time to Close
- 50 to 200 ms - Time to Open
Seat / Seal Material
- Seal: NBR
Solenoid Type
- 2/2-Way
Spring Material
- 301 Stainless Steel, 1.4310
Supply Voltage
- 24-240 Vac / 50/60 Hz
Turn-On Time
- 1 to 15 seconds Drain Open
- Closed Systems with Low & Fluctuating Pressure Conditions
- Open Systems with Differential Pressure down to 0 bar
