NORGREN pilot solenoid valve working principle
When energized, the electromagnetic force to open the pilot hole, the chamber pressure drops rapidly, forming a low and high pressure difference around the closing parts, fluid pressure to push the closing parts move up, the valve is opened; Power off, the spring force to close the pilot hole, the entrance pressure through the bypass hole quickly chamber around the valve close parts to form a low high pressure difference, fluid pressure to push the closing parts move down, close the valve. When the action time is very short and the frequency is high, the direct action type is selected, and the guide type is selected for large caliber.
NORGREN pilot solenoid valve features
The upper limit of the fluid pressure range is high. It can be installed arbitrarily (customized) but must meet the conditions of fluid pressure difference.
NORGREN Solenoid pilot Valve UK :SXE9673-A60-00B
The NORGREN solenoid pilot valve is connected to the body with a secondary opening valve and a secondary opening valve. The main valve and pilot valve step by step enable the electromagnetic force and differential pressure directly to open the main valve port. When the coil is energized, the electromagnetic force makes the moving iron core and the static iron core pull, the pilot valve opening and the pilot valve port on the main valve port, and the moving iron core and the main spool connected, at this time the pressure on the main valve chamber through the pilot valve port unloading, the pressure difference and the electromagnetic force at the same time under the action of the main spool upward movement, open the main valve medium flow. When the electromagnetic force disappears when the coil is powered off, the moving iron core closes the pilot valve hole under the action of self-weight and spring force. At this time, the medium enters the upper chamber of the main spool in the balance hole, so that the pressure of the upper chamber rises. At this time, the main valve is closed under the action of spring return and pressure, and the media is cut off. Reasonable structure, reliable action, and reliable work at zero pressure difference.
NORGREN solenoid pilot valve as a single control (i.e. single coil), two-position five-way solenoid valve as a double control (i.e. double coil). Coil voltage such as DC24V, AC220V and so on.
Two three-way solenoid valve is divided into normally closed type and normally open type two, normally closed type refers to the coil is not energized when the gas path is broken, normally open type refers to the coil is not energized when the gas path is through.
Normally closed two three-way solenoid valve operation principle: to energize the coil, the gas circuit is connected, the coil denier power, the gas circuit will be disconnected, which is equivalent to "point".
Normally open two three-way single electronically controlled solenoid valve action principle: to the coil energized, gas circuit disconnected, coil denier power, gas will be connected, which is also "point".
Action principle of two five-way double electronic control solenoid valve: to energize the positive action coil, then the positive action gas path is connected (positive action air vent), even if the positive action coil power off the positive action gas path is still connected, will be maintained until the anti-action coil is energized.
When the reverse action coil is energized, the reverse action gas path is connected (the reactionary air outlet has gas). Even if the reverse action coil is powered off, the reverse action gas path is still connected and will be maintained until the positive action coil is energized.