During normal operation, safety valves are designed to close quickly without chattering.
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During normal operation, safety valves are designed to close…
During normal operation, safety valves are designed to close quickly without chattering.
At sea level, a vacuum in a boiler results in a force of ___…
At sea level, a vacuum in a boiler results in a force of ___ lb applied on every square inch of surface.
A brick refractory should be cooled rapidly for energy effic…
A brick refractory should be cooled rapidly for energy efficiency.
Gear pumps are widely used positive-displacement pumps becau…
Gear pumps are widely used positive-displacement pumps because of their simple design and ease of repair.
A boiler room contains many combustible materials, and boile…
A boiler room contains many combustible materials, and boiler room fire safety requires established procedures to reduce or eliminate conditions that could cause a fire.
When an increase in steam pressure is required, the ___ acti…
When an increase in steam pressure is required, the ___ activates the programmer to start a purge cycle and lights the pilot light.
A boiler room contains many combustible materials, and boile…
A boiler room contains many combustible materials, and boiler room fire safety requires established procedures to reduce or eliminate conditions that could cause a fire.
Well-designed burners firing gaseous and liquid fuels operat…
Well-designed burners firing gaseous and liquid fuels operate at excess air levels of about ___% and result in negligible amounts of unburned fuel.
A(n) ___ is an air pressure-activated switch that closes aft…
A(n) ___ is an air pressure-activated switch that closes after proving sufficient pressure of combustion air from the forced draft fan.