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Gate valves are commonly used as feedwater stop valves.

Before relighting a burner, the combustion control programmer must go through a purge cycle.

All boilers in battery must have two main steam stop valves or one main steam stop valve and one ___.

After blowing down the water column and gauge glass, the low water fuel cutoff should be blown down also.

Hot water boilers operating with a 250°F water temperature and ___ psi water pressure or less are classified as low pressure.

The effect of hydrostatic pressure must be considered when calibrating a pressure gauge.

In a scotch marine boiler, the gases of combustion pass through tubes that are surrounded by water.

In a low pressure gas system, the manual reset valve cannot open until the gas pilot is lit.

The effect of hydrostatic pressure must be considered when calibrating a pressure gauge.

In a low pressure gas system, the manual reset valve cannot open until the gas pilot is lit.