Wood's metal is used to make:
a. gas cylinders.
b. fusible-plug pressure-relief valves.
c. rupture-disk pressure-relief valves.
d. spring-loaded pressure-relief devices.
ANS: B
Fusible-plug pressure-relief valves are made of a metal alloy that melts when the temperature of the gas in the tank exceeds a predetermined temperature. This is called Wood's metal.
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