Boiler feed pumps manufacturers



Boiler feed pumps manufacturers

A boiler feed water pump is a specific type of pump used to pump feed water into a steam boiler. The water may be freshly supplied or the condensate produced as a result of the condensation of the steam produced by the boiler. These pumps are normally high pressure units that take suction from a condensate return system and can be of the centrifugal or positive displacement type of pump. Cooling water pumps vary in size up to many horsepower and the electric motor is often separated from the pump body by some form of mechanical coupling. Large industrial condensate pumps can also serve as a feed water pump. In any case, in order to force the water into the boiler, the pump must generate sufficient pressure to overcome the vapor pressure developed by the boiler. This is usually achieved by the use of a centrifugal pump.


Another common form of boiler feed water pumps operates constantly and is provided with a minimum flow device to stop pump overpressure at low flow rates. The minimum flow normally returns to the tank

Steam locomotives and steam engines used on ships and stationary applications, such as power plants, also require feed water pumps. In this situation, however, the pump was often fed with a small steam engine that operated with the steam produced by the boiler. Of course, a means had to be provided for putting the initial charge of water into the boiler (before steam power was available to run the steam-powered feed water pump). The pump was often a positive displacement pump that had valves and steam cylinders at one end and feed water cylinders at the other end; No crankshaft was required.

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