An aquastat is a hot water boiler fitting that measures the water temperature in the boiler and controls the temperature by starting and stopping the burner.

The work activities of the boiler operator determine the degree of dexterity required and the duration, frequency, and degree of exposure to potential hazards.

The capacity of a safety valve is measured by the amount of steam that can be discharged per ___.

A safety data sheet (SDS) is an informational form used to relay chemical hazard information from the manufacturer, importer, or distributor to the employer.

The temperature range of a thermostatic drain valve is normally adjustable between 43°F and 79°F.

The capacity of a safety valve is measured by the amount of steam that can be discharged per ___.

Scale is caused by ___.

A ___ valve is a valve that allows fluid to flow by raising or lowering a valve disc against a seat.

Scale is caused by ___.

A(n) ___ test is the most accurate method of testing a low water fuel cutoff.