Emva kokuba umatshini wokuqhuba uqalisiwe, uqhuba isiguquli se-compressor ukujikeleza ngebhanti engunxantathu, eguqulwa ibe yipiston ngokusebenzisa indlela yentsimbi yokwenza ukuphindaphinda kwisilinda. Xa ipiston isuka kwikhava isiya eshafini, ivolumu yesilinda iyenyuka, uxinzelelo kwisilinda lusezantsi kunoxinzelelo lomoya, kwaye umoya wangaphandle ungena kwisilinda ngokusebenzisa isihluzo kunye nevalve yokutsala; Emva kokufika kwiziko elifileyo elisezantsi, ipiston iyahamba ukusuka kwicala leshafti iye kwicala elingaphandle, ivalve yokufunxa ivaliwe, ivolumu yesilinda iyancipha ngokuthe chu, umoya okwisilinda ucinezelwe kwaye uxinzelelo luyonyuka. Xa uxinzelelo lufikelela kwixabiso elithile, ivelufa yokukhupha ityhalwa ivulekile, kwaye umoya oxineneyo ungena kwitanki yokugcina umoya ngombhobho. Ngale ndlela, isiguquli sisebenza ngokungqukuva kwaye sijikeleza, ngokuqhubekayo sithumela umoya oxinanisiweyo kwitanki yokugcina umoya, kwaye ngokuthe ngcembe sonyusa uxinzelelo kwitanki, Ukuze ufumane umoya ocinezelekileyo ofunekayo.