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Available in horizontal and vertical orientations. Casing may be split radially or axially. Axial thrust may or may not be balanced out, depending on design. Impellers are enclosed design with diffuser or volute casing. Higher pressure services such as boiler feed water, condensate, pipelines, reverse osmosis, and decaling.

Best ways to get high pressure with a centrifugal pump. Thrust loads may be lower than single stage designs. Regenerative Turbine Pumps. Regererative turbine pumps are not considered a true centrifugal, but works on the same kinetic principal as a centrifugal pump. Instead of an impeller with vanes, the turbine impeller has blades similar to turbines, which generate the head. Normally it is end suction, single stage, though multi-stage versions are available. Normally single stage, though multi-sage is available.


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Pump has very tight internal clearances, so liquid pumped must be quite clean. Pump has very steep head-capacity curve, so pump must be protected against possibly operating against closed valve. Small boiler feed pumps for dry cleaners, bakeries, and similar small commercial boilers. Also used in OEM applications such as chiller and laser cooling. Very compact pump for low flow, high head applications. This may result in space savings and reduced cost for small boiler feed pumps.

This pump type handles vapor and air mixed in with the liquid better than traditional centrifugal pumps. Slurry Pumps. Slurry pump is a general term for a pump that handles an abrasive slurry.

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They may be considered an end suction pump, vertical column pump, or submersible pump. Pumps are constructed either of high nickel cast iron white iron to withstand the abrasive wear of slurries, or the pump is lined with rubber for more round-edged slurries. Pumps often have replaceable wear plates on one or both sides of the impeller. Mining, minerals processing, transportation of slurries for processing, and dredging.

Also pumps used in slurry applications in coal fired power plants, steel mills, cement mills, etc. Ordinary pumps wouldn't withstand the abrasive wear that slurries cause on pump parts. Slurry pumps are designed to handle abrasive slurries and give pumps the longest life possible. Self-Priming Pumps. Self-Priming pumps are a type of centrifugal that can be located above the suction reservoir without an external priming system.

End suction configuration, but enlarged case to support priming. Sump pumps and dewatering applications.

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Transfer services where pump must be located above the suction vessel. Submersible Pumps. Submersible pumps involve a submersible motor with a close coupled to single stage pump that allows the entire assembly to operated submerged. Submerged motor, either air-filled or oil-filled. Different impellers are designed to accommodate solids of various sizes. Sump pump services, effluent and sewage services ranging in size from products for homes to main sewage treatment plants. Eliminates column shaft and bearings found in column sump pump. More compact, reduced sump installation cost.

May be located in areas prone to flooding. Trash Pumps. Trash pumps are a type of self-priming centrifugal or submersible centrifugal pump designed to handle rocks and other solids while dewatering. Open or non-clog enclosed impellers, designed to pass rocks and other debris. Pumps may be self-priming. Seals usually have hardened faces.

Dirty water containing mud, rocks, stone, and other debris. Designed to pump the solids and abrasives found in many dewatering applications. Vertical Sump Pumps. Vertical sump pumps involve a vertical shaft supported in a center column. Single impeller, open or enclosed, pumps through a volute casing and then out a discharge column pipe. Various impeller types for clean and dirty services. Sleeve bearings in the column pipe need to be lubricated by the sump water, or externally with water or grease. Relatively low cost sump pump.

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Most designs need no shaft seal, since shaft column not pressurized. Vertical Turbine Pumps. Vertical turbine pumps are a vertical shaft pump that is designed to fit in a bore-hole well. Can also pump out of open reservoir, river, intake structure, or tank, or can be mounted in barrel for booster pump applications. Pump can have one or more impellers and diffuser bowls, depending on total head requirement.

Available with open and enclosed impellers. Sleeve bearings in pump diffuser bowls are lubricated by liquid pumped. Vertical high thrust motor mounted on top for product lubricated lineshaft bearings, or submersible motor mounted below pump to eliminate lineshaft and lineshaft bearings. Irrigation, potable water supply, plant make-up water, cooling water, fire pumps, potable water distribution, booster pumps, process pumps.

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Only practical way to pump from a deep well. Wide flow and head ranges. Low floor space usage. Immersed pump eliminates priming. Canned pump version excellent for low NPSH services. Well Pumps. A type of vertical turbine pump designed especially for use in a drilled bore-hole well.

Also, for lower flow rates refer to jet pump type above. Irrigation, potable water supply, plant make-up water, cooling water, fire pumps, potable water distribution. Positive Displacement Pumps. A positive displacement PD pump is a general name for a pump type that does not have impellers, but rather relies on rotating or reciprocating parts to directly push the liquid in an enclosed volume, until enough pressure is built up to move the liquid into the discharge system.

This includes many specific types for specific applications, as described below. Pump works on positive displacement principal, either rotary or reciprocating type. See below for features of specific types. All types of services in many industries where positive displacement pumps are favored over centrifugal pumps due to high viscosity, presence of fragile or shear sensitive solids, or need for low flow and high pressure. High viscosity fluids, some thinner fluids, fluids containing solids, especially fragile solids, and shear sensitive liquids.

Best choice for higher viscosity services, and to move liquids gently. May also be needed for low flow, high pressure combination, or other application niches. Some types are inherently self-priming, and several types are sealless.


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AODD Pumps. Air section with shuttle valve applies air alternately to the two diaphragms. Each diaphragm has a set of check valves.

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Many applications in general plant service where electricity isn't available, or where the liquid being pumped has high solids content or high viscosity. Wide range of liquids, including liquids containing solids, and corrosive liquids. Can be used where no electricity is available, if compressed air is available. Available in a variety of metal and non-metallic materials depending on the fluid pumped. Able to pump liquids containing large solids. Pump is sealless and can run dry. Concrete pumps are a type of reciprocating positive displacement pump that is specially designed to pump concrete and other mixed aggregate solutions.

High pressure discharge for pumping concrete long distances or up high elevations. Materials of construction that can handle the abrasive aggregate.