Iimpawu zokufaka kunye nemveliso ye-vacuum booster.Kukho indawo ye-inflection kwi-curve nganye ehambelana needigri ezahlukeneyo ze-vacuum kumfanekiso, obizwa ngokuba yindawo yokuncedisa amandla aphezulu, oko kukuthi, indawo apho umahluko woxinzelelo osebenza kwi-servo diaphragm ufikelela kubuninzi bawo njengoko amandla okufakwayo asanda.Ukususela kweli nqanaba, ukunyuka kwamandla okuvelisa kufana nokunyuka kwamandla okufakwayo.
Ngokutsho kwe-QC/T307-1999 "Iimeko zobuGcisa kwi-vacuum Booster", iqondo le-vacuum yomthombo we-vacuum ngexesha lovavanyo yi-66.7±1.3kPa (500±10mmHg).Igalelo kunye nemveliso yeempawu ze-vacuum booster zinqunywe kwangaphambili yindlela yokubala.Ngokomgaqo wokusebenza we-vacuum booster, iiparitha ezimbini zeempawu kwi-curve yeempawu zinokuqikelelwa: amandla okufakwayo ahambelana neyona ndawo iphezulu yamandla kunye nesamba;Umlinganiselo wamandla emveliso ukuya kumandla okufakwayo phambi kowona mmandla mkhulu wamandla, oko kukuthi umlinganiselo wamandla
