Isikhwama sekholomu lomoya siyisinto esivikelayo esisetshenziswa kakhulu ekupakisheni kwezokuthutha. Umgomo waso oyinhloko usezakhiweni kwe-valve yomoya ehamba ngendlela eyodwa.

Lapho kufuthwa umoya, igesi ingena isuka endaweni yokungena umoya ingene emgudwini womoya ovamile. Ngaphansi kwengcindezi yomoya, igesi icindezela ivule i-valve yomoya ngayinye futhi igcwalise wonke amakholomu omoya azimele. Ngemva kokuqeda ukufutha, ama-valve omoya ahamba ngendlela eyodwa azivala ngokuzenzakalelayo ukuvimbela ukubuyela emuva komoya, kugcine ingcindezi yangaphakathi ezinzile ngaphakathi kwekholomu ngayinye.

Ikholomu ngayinye yomoya isebenza ngokuzimela. Ngisho noma ikholomu yomoya ibhobozwa ngephutha noma yonakaliswa, ngeke kuthinte ukusebenza kokuvikela kwamanye amakholomu omoya. Umugqa wengcindezi obushelelezi uqinisekisa ukusatshalaliswa kwengcindezi okulinganayo ngesikhathi sokuthutha, kugwema ukugqashuka kwengcindezi yendawo.

Ngenxa yalesi sakhiwo esivuthiwe, izikhwama zomoya zihlinzeka ngokuvikelwa okuthembekile kokumunca ukushaqeka, ukuvimbela ukushayisana kanye nokubhafa emithwalweni. Zilula, zonga isikhala ngaphambi kokugcwaliswa umoya, zinciphisa kakhulu izindleko zokugcina kanye nezokuthutha.