In accordance with the invention a centrifugal pump is provided with an improved pump construction including adaptability of pump casing to pump impeller, and variability therein to desired operating conditions, a circular or concentric pump housing preferably being employed, which may be of sheet metal and stamped or forged to shape, and which inludes a cut water tongue or plate which is readily mounted within the casing and which has a cut-out shaped to a selected impeller with the periphery of the impeller running in close relation and which extends along the sides of the impeller, the structure of casing, cut-water tongue or plate and impeller effecting more efficient conversion of velocity into pressure head, directing the pumped fluid into the discharge connection in a more effective manner, reducing turbulence and excessive flow with resultant friction within the pump casing by preventing rotation of the fluid within the casing.Water Pump Control Valves It is the principal object of the invention to provide an improved centrifugal pump of increased efficiency which can be readily and inexpensively constructed. It is a further object of the invention to provide a centrifugal pump or simplified construction of pump casing, inlet and delivery connections, and impeller, with capabilities of variation of pump characteristics as desired by change of minor components.

It is a further object of the invention to provide a centrifugal pump of the character aforesaid which includes an inserted cut water plate or tongue in the casing having a cut-out for clearance by the impeller, the shape of the cut-out being variable to accommodate impellers of different diameters and widths. MULTI-FUNCTIONAL WATER PUMP CONTROL VALVEIt is a further object of the invention to provide a centrifugal pump having a simplified pump casing which does not require casting but can be formed of sheet metal and with inlet and delivery pipes of the desired size, which can be standard pipe sizes, welded to the housing.

It is a further object of the invention to provide a centrifugal pump in which the pump structure can be easily changed to accommodate fluids of different specific gravity.

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2011-12-21

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