TM 10-6640-239-13 1-26 MBPLB-1-6-3A STOPCOCK VALVE STOPCOCK VALVE STREETSIDE CURBSIDE STOPCOCK VALVE AIR COMPRESSOR DRAIN TRAP DRAIN HOSE THROUGH FLOOR AIR RECEIVER ELECTRIC SENSOR AIR PRESSURE GAGE DRAIN VALVE DRIER AIR SHUTOFF VALVE MECHANICAL ROOM DETAIL B STOPCOCK VALVE FUMEHOOD STOPCOCK VALVE FUMEHOOD Figure 1-7.  Water, Air, and Vacuum System Functional Diagram (Sheet 3 of 5)