Identify all Spool Valve Positions
Identify all spool valve positions, and also trace the direction of oil flow, following a solenoid “trip” event....
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Solenoid Valves Practical Problems
Suppose this valve control system has a problem. The control valve (LV-104) does not move to the full-open position as it should when the solenoid is de-energized, although it will...
Solenoid Valves Questions & Answers – 5
Sketch arrows next to each of the two solenoid valves showing the directions of air flow in the energized (E) and de-energized (D) states, assuming the process control valve is...
Solenoid Valves Questions & Answers – 4
Sketch arrows next to each of the two solenoid valves showing the directions of air flow in the energized (E) and de-energized (D) states, assuming both of the solenoid valves...
Solenoid Valves Questions & Answers – 3
Determine the “normal energization” states (e.g. NE or NDE) of each solenoid valve in this diagram, assuming the process valve needs to be closed when the process is running as...
Solenoid Valves Questions & Answers – 2
Solenoid valve SV-92 plays an important role in this compressor inlet separator control system. Level control valve LV-92 opens up when needed to drain liquid out of the “boot” of...
Solenoid Valves Questions & Answers – 1
A burner management system (BMS) monitors the status of the flame at the base of this incinerator, to ensure fuel gas does not keep entering the combustion chamber unless there...