TY JOUR TI CLASSIFICATION OF “ELE CTRIC DRIVE – STOP VALVE” SYSTEMS FROM POSITION OF ENERGY SOURCE USED FOR “OPEN-CLOSED” CYCLE CARRYING OUT KW classification KW electric drive KW pipeline stop valve KW energy source JO Bulletin of Bryansk state technical university AU Plakhotnikova, E.. PY 2016 IS 2016 PB Bryansk State Technical University