I-valve eqhelekileyo evulekile i-vamadic ye-pinenoid yohlobo lwe-valve ehlala ivulekile ekugqityweni okanye imeko eqhelekileyo kodwa inokuvalwa xa uphawu lombane lusetyenziswa. Iivila ze-vaumatic ze-pneumatic zezixhobo ezisetyenziselwa ukulawula ukuhamba komoya oxinzelelweyo okanye ezinye iigesi kwiinkqubo ze-Pneumatic. Ziqhelekile kwizicelo ezahlukeneyo zemizi-mveliso zokusebenza iinkqubo.
Kwisiqhelo esivulekileyo (Akukho), ivelve ivumela ukuhamba komoya okanye igesi ukudlula xa kungekho mandla wombane afakwe kwi-Socenoid. Xa isiginali yombane sinikezelwa kwi-Soutonoid, ayinamandla kwaye ibangela ivalve yokuvala, ukuvimba ukuhamba komoya okanye igesi.
I-Solenoid sisixhobo se-electromachichical esiquka i-coil ye-wire inxeba elijikeleze i-core. Xa ihamba ngenyawo yombane kwi-coil, ivelisa intsimi yemagneti eshukumisa i-core, iqhuba i-velo spicegran. Ngokulawula umqondiso wombane kwi-Socenoid, abaqhubi banokuvula okanye bavale ivalve kude, babonelela ngeendlela zokuzenzekelayo kunye nolawulo lweenkqubo ze-pneumatic.
