1. Vula kwaye uvale ngaphandle kokungqubuzana.Lo msebenzi uyisombulula ngokupheleleyo ingxaki yokuba i-valve yendabuko ichaphazelekayo yingxabano phakathi kwendawo yokutywinwa kunye nokutywinwa.
2. Isakhiwo sejacket.I-valve efakwe kumbhobho inokujongwa kwaye ilungiswe ngokuthe ngqo.Inokunciphisa ngokufanelekileyo ukupaka kunye nokunciphisa iindleko zokuvelisa.
3. Uyilo lwesihlalo esinye.Iphelisa ingxaki yokuba i-cavity ephakathi kwevalve ichaphazeleka ngoxinzelelo olungaqhelekanga.
4. Uyilo lwetorque ephantsi.Uyilo olukhethekileyo lolwakhiwo lwesiqu, kuphela ngesivalo esincinci sesandla esinokuvula nokuvala ngokulula.
5. Isakhiwo sokutywinwa kwe-Wedge.Ivalve ngamandla omatshini abonelelwa sisikhondo kwaye i-wedge icinezelwe kwisihlalo kwaye itywinwe.Umsebenzi wokutywina wevalve awuchatshazelwa kukutshintsha koxinzelelo lombhobho umahluko, kwaye ukusebenza kokutywina kuqinisekisiwe. phantsi kweemeko ezahlukeneyo zokusebenza.
6. Isakhiwo esizicocayo somphezulu wokutywina.Xa ibhola ityekela isuka esihlalweni, amava okuqukuqela kombhobho ecaleni kobuso besphere yetywina ukuya ngokulinganayo nge-360 °.Ayipheli kuphela ukugungxulwa kwesantya esiphezulu solwelo ukuya esihlalweni, kodwa iphinde ihlambe izinto eziqokelelweyo kumphezulu wokutywina ukuze kufezekiswe iinjongo zokuzicoca.