What safety device is designed to open quickly if the pressure of a gas in a closed space exceeds a preset limit?
A. Relief valve
B. Safety valve
C. Multiport valve
D. Block valve
A. Incorrect. A relief valve is designed to open slowly if the pressure of a liquid in a closed space exceeds a preset limit.
B. Correct. Safety valves are safety devices designed to open quickly if the pressure of a gas in a closed vessel exceeds a preset level.
C. Incorrect. A multiport valve is used to split or redirect a single flow into multiple flows or direct flows from multiple sources to the same destination.
D. Incorrect. Block valves are those valves used to block flow to and from equipment and piping systems.
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