Sketch arrows next to each of the two solenoid valves showing the directions of air flow in the energized (E)…
Identify all spool valve positions, and also trace the direction of oil flow, following a solenoid “trip” event.
Suppose this valve control system has a problem. The control valve (LV-104) does not move to the full-open position as…
Sketch arrows next to each of the two solenoid valves showing the directions of air flow in the energized (E)…
Determine the “normal energization” states (e.g. NE or NDE) of each solenoid valve in this diagram, assuming the process valve…
Solenoid valve SV-92 plays an important role in this compressor inlet separator control system. Level control valve LV-92 opens up…
A burner management system (BMS) monitors the status of the flame at the base of this incinerator, to ensure fuel…
