Urukurikirane rw'iyungurura rufite intoki zo kugenzura. Mugihe cyo kubungabunga, cheque ya cheque igomba gufungwa kugirango ihagarike amavuta ava muri tank. Akayunguruzo kagomba kuba munsi yamavuta mugihe ushyiraho. Niba cheque valve idafunguye rwose, nyamuneka ntutangire pompe ikora, kugirango bitazatera impanuka.
Ikimenyetso cya vacuum muyungurura kizerekana igihe igitutu kigabanutse hejuru yibintu bigera kuri 0.018MPa byerekana ko akayunguruzo kagomba gusukurwa.