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About This Item
Full Description
The following pump types are included in this guideline:
- Slurry, end suction
- Solids-handling, end suction pumps
- Submersible sewage, end suction
- Stock, end suction
- Horizontal multistage, axial split, segmented ring diffuser barrel
- ASME B73, API end suction, end suction- small
- End suction - large (greater than 0.3 m3/s (5000 gpm)
- API double suction
- Double suction, general service
- Vertical turbine, mixed-flow and propeller, single and multistage diffuser type
- Learn how surface roughness and internal pump clearances affect pump efficiency
- Understand the power consumption and efficiency loss created by bearings, lip seals, mechanical shaft seals, and shaft packing. Small, low horsepower pumps are particularly sensitive to these mechanical losses.
- The type of pumpage - viscosity, solids size and density, and slurries will have an influence on efficiency
- Special impeller designs, such as those intended to increase suction specific speed or provide a specific curve shape can reduce the attainable efficiency
- Thrust balance devices that are used to balance hydraulic thrust operate on the basis of differential pressure and bypass pump flow can reduce pump efficiency
- Multistage vertical turbine (diffuser) type pumps exhibit a difference between attainable bowl efficiency and attainable pump efficiency