Emva kokuba inkqubo yokutshiza icinyiwe, umlomo uyaqhubeka uthontsiza, yinto eqhelekileyo leyo. Kwamanye amashishini (njengokucoca ukutshiza, ukupholisa ukutshiza, njl. Kodwa kweminye imimandla ethile (enjengokutshiza ngokuchanekileyo kwemveliso, ukutshiza ngemichiza, ukutshiza okuninzi, njl. Ngesi sizathu, siyile izisombululo ezibini ezichasene nokukhupha idrip ngokhetho lwakho.

Isisombululo sokuqala kukufaka intwasahlobo yoxinzelelo ngaphakathi kombhobho, kwaye ufake ibhola yokutywina kwelinye icala lentwasahlobo. Xa uxinzelelo kumbhobho lungaphantsi koxinzelelo lwasentwasahlobo, xa intwasahlobo ichasene nebhola yokutywina, umlomo uvaliwe. Iya kuthabatha umlomo. Xa uxinzelelo lombhobho lukhulu kunoxinzelelo lwasentwasahlobo, ibhola yokutywina ityhilwe ivulekile, umjelo wombhobho uvula kwangoko, kwaye umlomo uza kuqala ukutshiza. Izibonelelo zesisombululo ziindleko eziphantsi, ubhetyebhetye obuphezulu, kunye nefuthe elifanelekileyo lokuthintela ukuvuza. Ukungancedi kukuba kulungele kuphela iimeko ezinoluhlu olukhulu loxinzelelo.

Ngenxa yokuba isisombululo sokuqala sifuna uxinzelelo lwenkqubo ephezulu, sayila esinye isisombululo sokuthintela ukuvuza. Esi sisombululo sisebenzisa iivensi ze-solenoid okanye izixhobo zomoya we-pneumatic ukuvala ngokukhawuleza umbhobho xa umlawuli ekhupha umyalelo wokwenza uxinzelelo lombhobho Ulahlekile kwimpompo yamanzi, kwaye umlomo usekwimeko yokuxinana koxinzelelo lwangaphakathi nangaphandle kwangoko, okuthintela ulwelo olugqithisileyo ukusuka ekuthontsizeni umlomo. Esi sisombululo sinoluhlu olubanzi lokusetyenziswa. Ingatshintshwa kwinkqubo yokutshiza yoqobo, okanye unoku-odola umbhobho womoya okanye umbane wombane, umlomo udityaniswe nevalve.