Hydraulic solenoid valves are normally similar to pneumatic solenoid valves apart from that they control the move of hydraulic fluid (oil). Hydraulic equipment use solenoids to control the move of oil. Taking away the pneumatic pressure triggers the piston to maneuver downward due to pressure in the spring. This movement https://messiahxrpgz.ampblogs.com/Considerations-To-Know-About--51170617