Solenoid valves are electric devices, no longer pneumatic.
right here's why:
an electrical sign actuates Solenoid Valves. They use a solenoid—an electromagnetic coil that, while energized with an electrical modern, creates a magnetic area that moves an inner plunger or armature. This motion shifts or opens the valve, permitting air (or different fluids) to go with the flow via or divert to a distinct port.
at the same time as solenoid valves are managed by way of electricity, they may be regularly used in pneumatic systems (or hydraulic structures, depending on the software). The cause of the solenoid in the valve is to manipulate the float of air (or gasoline) in the gadget based totally on electrical enter.
precis:
Solenoid Valves = electric manipulate (the use of electromagnetic action).
Pneumatic Valves (in widespread) = manipulate of air/gas go with the flow (generally with the aid of air stress or manual operation).
So, solenoid valves are electric powered in terms in their actuation, but they regularly manipulate pneumatic systems or glide.