1. Ukuxhathisa ulwelo kuphantsi kakhulu. Iivalve yebholangokubhoboza ngokupheleleyo ngokusisiseko akukho ukumelana nokuqukuqela.
2. Isakhiwo esilula, ubungakanani obuncinci, kunye nobunzima obulula.
3. Iqinile kwaye ithembekile. Ineendawo ezimbini zokutywina, kunye nezixhobo zokutywina zevalve yebhola yenziwe ngokubanzi ngeeplastiki ezahlukeneyo. Inomsebenzi obalaseleyo wokutywina kwaye inokufikelela ukutywinwa okupheleleyo. Ikwasetyenziswa ngokubanzi kwiinkqubo zevacuum.
4. Ukusebenza kulungele kwaye ukuvula / ukuvala ngokukhawuleza.
Ukusuka ekuvuleni ngokupheleleyo ukuya kukuvalwa ngokupheleleyo, kufuna kuphela ukujikeleza kwe-90 °, okwenza kube lula ukulawula umgama.
5. Kulula ukuyigcina. Iivalve yebholainesakhiwo esilula kwaye amakhonkco okutywina ahlala eshukuma. Ngoko ke, ukuchithwa kunye nokutshintshwa kulungelelaniso.
6. Xa ivuliwe ngokupheleleyo okanye ivalwe ngokupheleleyo, iindawo zokutywina ze-sphere kunye nesihlalo sevalve zihlukaniswe phakathi. Xa isiphakathi sidlula, asisayi kubangela ukhukuliseko kumphezulu wokutywina wevalve.
7. Uluhlu olubanzi lwesicelo, kunye nobubanzi obusuka kwiimilimitha ezimbalwa ukuya kwiimitha ezininzi. Ingasetyenziswa ukusuka kwivacuum ephezulu ukuya kuxinzelelo oluphezulu.
8. Ngenxa yepropathi yokucima i-valve yebhola ngexesha lokuvula kunye nokuvala inkqubo, ingasetyenziselwa kwimidiya equkethe iinqununu eziqinileyo ezimisiwe.
