I-Hikelok inemikhiqizo ehlukahlukene, okuhlanganisa ama-valve ezinsimbi kanye nokufakwa kwazo, imikhiqizo yokucindezela okuphezulu kakhulu, imikhiqizo yobumsulwa obuphezulu kakhulu, ama-valve enqubo, imikhiqizo ye-vacuum, uhlelo lokuhlola, uhlelo lokufaka ngaphambi kokufakwa, iyunithi yokucindezela kanye nezesekeli zamathuluzi.
Izilawuli zezinsimbi zeHikelok zimboza umlawuli wokunciphisa ingcindezi, umlawuli wokucindezela emuva, umlawuli wokucindezela wesigaba esiphindwe kabili kanye nohlelo lokushintsha.
