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A major source facility is a facility that emits less than 10 tons per year of any single air toxic and less than 25 tons per year of any combination of air toxics.

A(n) ___ is a combustion control system that controls the amount of steam produced by changing the burner firing rate.

A major source facility is a facility that emits less than 10 tons per year of any single air toxic and less than 25 tons per year of any combination of air toxics.

A ___ provides access inside the water side of a boiler for inspection, sight, or cleaning.

Piping system designs vary depending on the degree of temperature control desired and the specific application.

A deaerator is a boiler water treatment accessory that heats feedwater to the temperature of saturated steam at the pressure within a pressure vessel.

___ certification is required for technicians servicing low-pressure appliances that use a refrigerant that boils above 50°F at atmospheric pressure.

___ certification is required for technicians servicing low-pressure appliances that use a refrigerant that boils above 50°F at atmospheric pressure.

Suction lift is the pressure at a pump inlet when the liquid supply to the pump is taken from a tank or other supply source that is above the pump.

A feedwater ___ valve is located next to a feedwater stop valve and prevents feedwater from flowing from the boiler back to the feedwater pump.