Kitoma Indonesia - menyediakan Solenoid valves 2/2-way servo-operated Type EV220A 6-50

EV220A is a compact servo-operated 2/2-way solenoid valve program, especially designed for use in machines and equipment with limited space.
 

Features EV220A

• Compact solenoid valve for robust industrial applications
• Liquid hammer damped
• Low power consumption
• NO version, standard for ¼” to 1” valve sizes
• NC version, standard for ¼” to 2” valve sizes
• For water, oil, compressed air and similar neutral media
• Diff erential pressure: Up to 16 bar
• Viscosity: Up to 50 cSt
• Ambient temperatures: Up to +50oC
• Enclosure: Up to IP 65

Technical data

Function

De-energized closed version Coil voltage disconnected
When voltage is disconnected, the armature spring (2) presses the armature block (3) down against the pilot orifice (4). Pressure builds up over the diaphragm (5) via the equalising orifice (7). The diaphragm closes the main orifice (6) 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 equalising orifice (7), pressure over the diaphragm (5) falls and the diaphragm is lifted clear of the main orifice (6). The valve stays open for as long as the required least differential pressure is present and voltage is applied to the coil.

De-energized open version
In principle the function involves valve positions opposite to the above for applied and disconnected voltage respectively.

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