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The ASME Boiler and Pressure Vessel Code requires each automatically fired steam boiler to be protected from overpressure by ___ pressure-actuated control(s).

The ___ is a nongovernmental international organization that is comprised of national standards institutions of over 90 countries.

When a handwheel is turned to open a nonreturn valve, the stem retracts but the valve ___.

A ___ is a component of a refrigerant system that controls the flow of refrigerant into an evaporator.

The two types of pressure control are additive pressure control and subtractive pressure control.

Check valves are available as swing, lift, and spring check valves.

The ___ is a nongovernmental international organization that is comprised of national standards institutions of over 90 countries.

Dampers regulate draft by restricting the flow of air and/or the gases of combustion.

The two types of pressure control are additive pressure control and subtractive pressure control.

A(n) ___ is an absorption chiller system component that vaporizes the refrigerant and separates it from the absorbent.