I-DR4 - 5 I-Hydraulic ibuyela emuva i-valve ye-Electric terminal Type System System. Ukukhishwa kwepompo okufuywayo kudliwa ngokuhlukile i-valve ifakwe umsebenzi wokulawula ingcindezi futhi ungashintsha ukuqondiswa ngokuzenzakalelayo. Ingcindezi ingashintshwa kusuka ku-0 kuye ku-20MPA, futhi kulula ukujwayela, isakhiwo silula, futhi i-changever inokwethenjelwa.I-valve ilula ngesakhiwo, ithembekile ekuqondisweni.
