Author: Anonymous

Stop valves before and after a pressure-reducing valve allow servicing of the pressure-reducing valve.

A flammability hazard on the NFPA Hazard Signal System indicates the degree of susceptibility of materials to explode or release energy by themselves or by exposure to certain conditions or substances.

___ are used in boilers to direct the gases of combustion for multiple passes to obtain maximum efficiency.

In a natural-circulation hot water heating system, the ___ functions as a relief valve.

___ are used in boilers to direct the gases of combustion for multiple passes to obtain maximum efficiency.

___ is credited with the development of the reciprocating steam engine.

Scale acts as an insulating material and reduces the transfer of heat to water.

___ is heat transfer that occurs when currents circulate between warm and cool regions of a fluid.

A boiler management and control system may also be known as a boiler control system (BCS) or microcomputer boiler control system (MBCS).

A ___ is a dynamic pump with a rotating impeller inside a cast iron or steel housing.