A ___ pump draws fuel oil from a fuel oil tank and delivers it to a burner at a controlled pressure.

___ are located on the blowdown line used to release water from the bottom of a boiler.

A tankless boiler has an added heat exchanger to remove the required additional heat from the gases of combustion in order to allow the water vapor to condense.

___ are located on the blowdown line used to release water from the bottom of a boiler.

___ applications use steam to produce heat, force, and/or mechanical action in a production application.

Vacuum is pressure ___ pressure.

The ___ is the part of a boiler with water on one side and heat from gases of combustion on the other.

A temperature-pressure gauge indicates the ___.

A temperature-pressure gauge indicates the ___.

The ___ is the part of a boiler with water on one side and heat from gases of combustion on the other.