Direct Drive Type 2W Series Water Solenoid Valve 2W200-20 made of
Brass
Direct-acting solenoid valve, when energized, the electromagnetic
coil produces electromagnetic force to lift the closure from the
valve seat, the valve open; When the power, the electromagnetic
force disappeared, the spring to the closure of the pressure on the
seat, the valve closed.
| Model No. | 2W200-20 |
| Working Medium | Air,Water,Oil,Gas |
| Motion Pattern | Direct Drive Type |
| Type | Normal Close Type |
| Aperture of Flow Rate | 20 |
| Joint Pipe Bore | 3/4” |
| Operation Fluid Viscosity | 20 CST(below) |
| Working Pressure(kgf/cm²) | Gas:0~7, Oil:0~5, Air:0~7, Water:0~5 |
| Material of Oil Seal | NBR,EPDM Or Viton |
The Drawings of 4V200-20
Sample
The Sample Coil
The mainly Feature
1. Pilot diaphragm structure.
2. Protective diaphragm structure design, life extension of two
times.
3. Piping can be installed at any Angle, and it is better to have
the horizontal pipe connecting coil facing up to enhance the
service life.
4. Coil protection grade IP65
Working principles
This valve is the pilot type solenoid valve of the second opening
valve. Its structure is mainly composed of the pilot valve and the
main valve. The main valve adopts the rubber sealing structure.
When in normal position, the guide valve is sealed with movable
iron core, the pressure in the valve chamber is balanced, and the
main valve is closed. When the coil is energized, electromagnetic
force is generated to absorb the moving iron core, and the
dielectric self-guiding valve mouth in the main valve cavity is
discharged, resulting in pressure difference. The diaphragm or
valve cup is quickly lifted, and the main valve mouth is opened,
and the valve shows a path. When the coil power off, the magnetic
field disappeared, the resetting of the active iron core, closed
valve mouth, valve and the main valve chamber pressure balance, the
valve was closed state
How to distinguish the normally closed solenoid valve, and, normal,
open, type, electrical, magnetic valve,
No power valve for the path state is normally open, is closed state
is normally closed. Working principle is to rely on the solenoid
valve coil power supply magnetic force to drive the spool action to
connect or disconnect the pipeline.
Normally open and normally closed are only switches, namely the two
states of the relay. Normally open and normally closed can be set
by themselves. For example, when the pressure value is lower than a
certain value, it is normally open.
It can also be normally closed when the pressure value is lower
than a certain value. When the pressure value is higher than this
value, the switch action will make the normally closed state become
normally open. It depends on how you set it up.
Two - way valve is usually open and often closed two kinds, but
either solenoid valve, or manual valve, never seen two kinds of
control, the valve will often open valve spool reverse assembly
becomes normally closed.
Job purpose
Water solenoid valve is suitable for water or liquid as the working
medium, can automatically control or remote control of water, oil,
liquid and other working medium pipeline on and off. Because this
valve USES the rubber seal, therefore to the working medium
cleanliness greatly reduces, has opens and closes quickly, the
reliability high characteristic.
