Ukwazisa uluhlu lwe-PST4 oluVala iiMpompo ze-Centrifugal eziDityanisiweyo, ukuphuculwa kokugqibela kwiimpompo ze-PST esele zinamandla.Ngemisebenzi eyandisiweyo kunye namandla amakhulu, ezi mpompo zikhetho olugqibeleleyo kuluhlu olubanzi lwezicelo.