Author: Anonymous

Electric boilers are classified by water volume and wattage.

A ___ check valve is a check valve that prevents backflow through the use of a conical or cylindrical brass disc held in place by a spring.

Natural draft produces greater amounts of draft in the winter than in the summer.

A ___ check valve is a check valve that prevents backflow through the use of a conical or cylindrical brass disc held in place by a spring.

A power burner is a burner ___.

Natural draft produces greater amounts of draft in the winter than in the summer.

A power burner is a burner ___.

Scale formation can result in an increase in fuel required to generate steam.

A ___ maintains the NOWL in a boiler by controlling the amount of feedwater pumped to the boiler from the surge tank.

___ and waist belts are used to reduce injuries from falling.