Labels:text | diagram | plan | line | technical drawing | parallel | schematic | number OCR: VALUE STEAM ENGINE DRIVE 9 +FROM BOILER + P 8 R T THROTTLE > E VALUE 600 PSIG 7 S BOILER PRESSURE S 0070wZ6w :- 6U R D 5 E E 4 X 1 30 0 2 P S - 6 1 ATMY 0 G O ATM-A.