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A ___ is an auxiliary device commonly used with boilers to transfer heat from a hotter fluid to a cooler fluid.

Four common types of ___ include the thermostatic, float thermostatic, inverted bucket, and thermodynamic.

Only watertube boilers have bottom blowdown valves.

Water added to a boiler to replace water lost due to leaks or lost condensate is known as ___ water.

___ is the rapid opening and closing of a safety valve.

After the total force of steam has lifted a safety valve off its seat, the steam enters the ___.

A ___ is a pipe fitting with removable plugs that allows for cleaning and inspection of piping.

Water added to a boiler to replace water lost due to leaks or lost condensate is known as ___ water.

If there is an overpressure condition in a boiler, then the water level controls have failed.

A ___ is a pipe fitting with removable plugs that allows for cleaning and inspection of piping.