: The library only contains a schematic graphic but lacks the underlying SPICE simulation model.
You can find downloadable library files for solenoid valves on several community platforms: solenoid valve library for proteus portable download
Ensure the flyback diode is connected in parallel with the solenoid valve, pointing towards the positive voltage rail (reverse-biased). Without this, the simulated transistor may fail due to inductive kickback. : The library only contains a schematic graphic
Completing Your Proteus Simulation: Downloading and Installing Solenoid Valve Libraries solenoid valve library for proteus portable download
: Open your Proteus Portable folder. Look for a directory named LIBRARY . In many portable versions, this is directly within the root folder of the portable application (e.g., Proteus Portable\Data\LIBRARY or simply Proteus Portable\LIBRARY ).