photo © 2011 Les Chatfield | more info (via: Wylio)
Centrifugal pumps are used to supply large volumes of water at a constant output pressure. The pressure generated by a centrifugal pump is less compared to other types of pumps, such as a reciprocating (positive-displacement) pump. Centrifugal pumps are designed for either horizontal or vertical operation. The horizontal centrifugal has a vertical impeller connected to a horizontal drive shaft. One of the disadvantages of a centrifugal pump is that it has to operate at a high enough rpm to push the water all the way out of the well.
L&S Electric provides complete pump rebuilding capabilities, including centrifugal pumps. Centrifugal pumps are typically constructed of cast iron, aluminum or high grade stainless steel that can withstand harsh conditions or hazardous materials. This kind of pump offers a uniform rate of flow and can accommodate solid and liquid mixtures. Centrifugal pumps are used for large discharge through smaller heads.
If you’d like a good overview of the basic operations of centrifugal pumps, click here:
Vertical centrifugal pumps are also referred to as cantilever pumps. They utilize a unique shaft and bearing support configuration that allows the volute to hang in the sump while the bearings are outside of the sump. This style of pump uses no stuffing box to seal the shaft but instead utilizes a “throttle Bushing”. A common application for this style of pump is in a parts washer.