Kitoma Indonesia - menyediakan EV260B, Servo-operated 2-way proportional solenoid valves
 

Solenoid valves EV260B is a proportional (modulating) servo-operated 2-way solenoid valve program with connections from 1/4” to 3/4”.
Through stepless regulation of the coil current, the armature can be placed in any position in the armature tube, thus setting the valve to any position between completely closed and completely open.
The valve is fully open when the coil current has reached its maximum value.
 

Features Solenoid valves EV260B

• For stepless flow regulation in industrial plants
• Short reaction time
• Linear characteristic throughout the regulation range
• Closes on power failure (fail-safe function)
• 24 V dc supply voltage
• Standard 4-20 mA or 0-10 V dc pilot signal
• For water, oil and similar neutral liquids
• Flow range for water: 0.5-12.7 m³/h
• Coil enclosure: IP 67
• Also available with NPT thread. Please contact Danfoss.

Technical data

Function

Proportional regulation of the opening and closing of the EV260B valves is achieved through stepless regulation of the coil current and thus of the pulling force of the solenoid coil.

When the coil current is increased, the pulling force of the coil (1) will at a certain point exceed the counteracting spring force of the closing spring (2). The armature (3) moves up, opening the pilot orifice (4) in the diaphragm (5), which due to the servo effect follows the armature’s movement.

The valve is fully open when the coil current has reached its maximum value.

Through stepless regulation of the coil current the armature can be placed in any position in the armature tube, and the valve thus set to any position between completely closed and completely open.

The effective coil current range for EV260B proportional valves without signal converter is approx. 300-600 mA.

The EV260B valves are also available with a signal converter built in the coil’s terminal box (6). The signal converter’s output terminals are connected to the solenoid coil.

The signal converter regulates the coil current so that it is proportional to the input signal (pilot signal).

The pilot signal may be a
- 0 - 10 V dc voltage signal or a
- 4 - 20 mA current signal

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