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Centrifugal pumps with an internal suction stage such as water-jet pumps or side-channel pumps are also classified as self-priming pumps. [10] Self-Priming centrifugal pumps were invented in 1935. One of the first companies to market a self-priming centrifugal pump was American Marsh in 1938. [citation needed]
While centrifugal pumps impart momentum to the fluid by motion of blades, positive displacement pumps transfer fluid by variation in the size of the pump’s chamber. Centrifugal pumps can be of rotor or propeller types, whereas positive displacement pumps may be gear-based, piston-based, diaphragm-based, etc. As a general rule, centrifugal ...
An axial-flow pump for industrial use. An axial-flow pump, or AFP, is a common type of pump that essentially consists of a propeller (an axial impeller) in a pipe.The propeller can be driven directly by a sealed motor in the pipe or by electric motor or petrol/diesel engines mounted to the pipe from the outside or by a right-angle drive shaft that pierces the pipe.
An example is Aid Foundation International in the Philippines, who won an Ashden Award for their work developing ram pumps that could be easily maintained for use in remote villages. [11] The hydraulic ram principle has been used in some proposals for exploiting wave power , one of which was discussed as long ago as 1931 by Hanns Günther in ...
Goulds Water Technology is a brand of Xylem Inc. providing pumps for residential, commercial and agricultural applications and Goulds Pumps remains a part of ITT Corporation providing pump products for the industrial market. Xylem comprises three business units – Water Solutions, Analytics, and Applied Water Systems.
2004 - Thompsons Kelly & Lewis [15] (Australian supplier of centrifugal pumps [16]) 2005 - Interseal assets (from Australia-based Ludowici Mineral Processing Equipment Pty Ltd. [17]) 2006 - HydroTechnik (privately held mechanical seal manufacturer based in Olomouc, Czech Republic [18]) 2007 - MF Sealing Systems (British industrial pump and seal ...
Pump and volute casing. A volute is a curved funnel that increases in area as it approaches the discharge port. [1] The volute of a centrifugal pump is the casing that receives the fluid being pumped by the impeller, maintaining the velocity of the fluid through to the diffuser. As liquid exits the impeller it has high kinetic energy and the ...
Feedwater pumps range in size up to many kilowatts and the electric motor is usually separated from the pump body by some form of mechanical coupling. Large industrial condensate pumps may also serve as the feedwater pump. In either case, to force the water into the boiler, the pump must generate sufficient pressure to overcome the steam ...