Options:
a) Fully open
b) Fully closed
c) Proper operating
d) Emergency
Correct Answer:
c) Proper operating
Explanation:
Control valves regulate the flow, pressure, or temperature of a system. They should always be in the proper operating position based on system requirements and conditions. Unlike manual valves, control valves adjust dynamically to maintain the desired parameters.
- Fully open or closed positions (options a and b) are generally not suitable for control valves, as their purpose is to modulate, not simply start or stop flow.
- Emergency position (option d) is a specific scenario used during failures or shutdowns, not standard operation.
Ensuring the valve is in its proper operating position enhances efficiency, safety, and reliability.
