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 6U N R D 5 E E 4 X 1 30 0 R 2 P - S - 6 1 ATMY 0 G 0 ATM-7.