Solenoid valves Danfoss Type EV220B 65-100
Kitoma Indonesia - menyediakan Solenoid valves 2/2-way servo-operated Type EV220B 65-100
Solenoid valves EV220B (65-100 series), Servo-operated 2/2-way solenoid valves
EV220B 65-100 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 bodies and flanged connection.
Water-hammer damped design and built-in pilot filter ensures a reliable operational period.
Features Solenoid valves EV220B Cl
- For robust industrial application, such as supply
- For water and similar neutral media
- Flow range for water: 25 to 400 m³/h
- Differential pressure: Up to 10 bar
- Viscosity: Up to 50 cSt
- Ambient temperature: Up to +80°C
- Coil enclosure: Up to IP 67
- Flange connections: 2 1/2, 3 and 4”
- Water hammer damped
- Built-in filter for protection of pilot system
| Installation |
Optional, but vertical solenoid system is recommended. | ||
| Pressure range | 0.25 - 10 bar | ||
| Max. test pressure | 15 bar | ||
| Time to open 1) | DN 65: approx. 5 s | DN 80: approx. 5 s | DN 100: approx. 5 s |
| Time to close 1) | DN 65: approx. 7 s | DN 80: approx. 15 s | DN 100: approx. 29 s |
| Ambient temperatur | max. +80oC (depending on coil type, see data for the coil selected) | ||
| Medium temperature | -25 to +90oC | ||
| Viscosity |
max. 50 cSt | ||
| Materials | Valve body: Cast iron (GG 20), W.no. 0.6020 Armature/tube stop: Stainless steel, W.no. 1.4105/ AISI 430L Armature tube: Stainless steel, W. no. 1.4306/ AISI 304L Springs: Stainless steel, W. no. 1.4310/ AISI 301 Sleeve, etc.: EPDM, NBR, PTFE (EPDM versions) NBR, PTFE |
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1) The times are indicative and apply to water. The exact times will depend on the pressure conditions.
Function Solenoid valves EV220B Cl
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 equalising orifice (7). 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.
Coil voltage connected (open):
When voltage is applied to the coil (8), the armature (1) and the valve plate (3) are lifted clear of the pilot orifice (4). As the pilot orifice is larger than the equalising orifice (7), 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.
- Armature
- Closing spring in pilot system
- Valve plate
- Pilot orifice
- Servo piston
- Main orifice
- Equalising orifice
- Coil
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_Servo-operated_2-2-way_solenoid_valves.jpg "EV220B_(65-100_series)_Servo-operated_2-2-way_solenoid_valves.jpg")
EV220B (65-100 series) Servo-operated 2/2-way solenoid valves_Servo-operated_2-2-way_solenoid_valves_with_US_coil_type_BT.jpg "EV220B_(65-100_series)_Servo-operated_2-2-way_solenoid_valves_with_US_coil_type_BT.jpg")
EV220B (65-100 series) Servo-operated 2/2-way solenoid valves with US coil type BT
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