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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

1) The times are indicative and apply to water. The exact times will depend on the pressure conditions.

 

Function Solenoid valves EV220B Cl


Function_EV220B_Cl.jpg

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.

  1. Armature
  2. Closing spring in pilot system
  3. Valve plate
  4. Pilot orifice
  5. Servo piston
  6. Main orifice
  7. Equalising orifice
  8. Coil    

 

EV220B_(65-100_series)_Servo-operated_2-2-way_solenoid_valves.jpgEV220B (65-100 series) Servo-operated 2/2-way solenoid valves

EV220B_(65-100_series)_Servo-operated_2-2-way_solenoid_valves_with_US_coil_type_BT.jpgEV220B (65-100 series) Servo-operated 2/2-way solenoid valves with US coil type BT

 

 

 

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