Chigwacho Nthawi zambiri amagwiritsidwa ntchito pamakina owongolera komanso mafakitale okhala pamwamba, kudzera pa coil wa solenoid kuti athetse udindo wa mpweya, kuti athetse kuwongolera kwa valavu. Chigwa cha solenoid chimakhala ndi njira zingapo zamagesi ndi valavu ya valavu, valavu yolumikizira kapena yopumira pakati pa njira zosiyanasiyana zamagesi
