Step-by-step direct-acting solenoid valve
This valve uses a primary opening valve and a secondary opening valve connected to Integrated, the main valve and pilot valve step by step use electromagnetic force and pressure difference to directly open the main valve port. When the coil is energized, an electromagnetic force is generated to pull the moving iron core and the static iron core together, the pilot valve port opens and the pilot valve port is located on the main valve port, and the moving iron core and the main valve core are connected together. At this time, the main valve The pressure in the cavity is unloaded through the pilot valve port, and the main valve core moves upward under the simultaneous action of the pressure difference and the electromagnetic force, opening the main valve medium to flow. When the coil is powered off, the electromagnetic force disappears. At this time, the moving iron core closes the pilot valve hole under the action of its own weight and spring force. At this time, the medium enters the upper chamber of the main valve core in the balance hole, causing the pressure in the upper chamber to increase. At this time The main valve is closed under the action of spring return and pressure, and the medium is cut off. The structure is reasonable, the action is reliable, and it works reliably at zero pressure difference. Such as: ZQDF, ZS, 2W, etc.
