What is Solenoid Valve ? How it works ? Animation
A solenoid is an electrical coil.When a battery is connected to the coil,a magnetic field is created.And pull the plunger or armature back.This opens the valve,allowing high pressure air to flow into the pneumatic cylinder.When the battery is disconnected,the plunger is pushed back closing the valve and blocking the flow of high pressure air,well letting the air flow out of the cylinder.
Read more Direct Acting Solenoid Valve