Pilot hydraulic force to a valve solenoid switch with pilot filtering

The present invention discloses a pilot hydraulic force to a valve solenoid switch with pilot filter, comprising a valve body, a valve cover, and the pilot solenoid valve disposed lumen, the primary valve seal member, the main spool, the pilot valve seal member, the pilot spool, the spring seal, filter rod, unloading damping; a main valve body and the valve cover clearance fit, the main spool of the main valve body seal interference fit, and compressed with a pilot valve seat; and a pilot valve body solenoid armature is connected by the cylindrical pin; pilot spool and the pilot spool seal clearance fit, the lower portion of the positioning ring; rely on the pilot spool of the main spool positioned upper ring, the low pressure can be directly lifted main spool; pilot a valve seat formed in the valve body lower portion a clearance fit is formed when the main role in guiding movement of the valve body; a pilot valve seat hole and unloading damping interference fit is formed when the back pressure pilot oil passage is opened. The present invention in comparison with the other solenoid valve switches, small size, light weight, wide operating pressure range, anti-pollution properties, and reduces vibration and noise of the valve, the valve operation stability is improved.