Vallervalve ya solenoid ni igice cyo kugenzura, mugihe cyamashanyarazi cyangwa imbaraga, uhagarike cyangwa wemere cyangwa yemere amazi. Iyo ifite imbaraga, umurima wa magneti wubaka ukurura plunger kurwanya ibikorwa byimpeshyi. Iyo uharanira imbaraga, plunger cyangwa armature ihamye itangwa kumwanya wambere nigikorwa cyimpeshyi. Actuator ifata imiterere ya electomagnet.
