Pump Types Guide - Find the Right Pump for the Job
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Pump Types Guide Find the right pump for the jobContributed by: PumpScout Staff
There are lots of pump types available, but which one is right for you? Understanding which pump type is right for your application is critical to reduce costsand increase the life of your pump and system. We've worked with leading pump experts to put together this comprehensive guide to the most popular pumptypes. The individual pump types are listed in the left column and are grouped by either centrifugal pumps or positive displacement pumps.This content is a copywrite of PumpScout.com and can not be copied or reproduced. If you would like to share this valuable information with others, pleaseconsider linking to this page.
Pump Type Basic Description Key Features ApplicationsUsed
RecommendedMedia (Fluid) Advantages
FlowRate
Ranges
Total Head(Pressure)Ranges
HorsePowerRanges
CentrifugalPumps
General name forpumps with one ormore impellers. Manytypes andconfigurations fordifferent applications.See below for specificcentrifugal pumptypes.
One or moreimpellers. Casing isvolute or diffusertype. Normallyelectric motor driven,but other drive typesavailable.
All sorts of liquidscan be pumps withcentrifugal pumps.Highest flow ratesof all pump types.Handles clean ordirty liquids, andliquids with lowviscosity. Liquidshould not containair or vapors.
Water and relativelythin liquids (won'tpump thicker oils).Can pump liquidswith or without solidsif proper impellertype is chosen.Available in alloys forcorrosive services.
Best pump choicefor lower viscosity(thin) liquids andhigh flow rates. Nopulsations thatmay be found insome positivedisplacementpumps.
5 200,000gpm19
757,080 lpm
10 7,500 ft
3 2,286 m
0.125 5,000 hp
ANSI ProcessPumps
ANSI Process pumpsare the onlydimensionally standardpump type in the U.S.pump industry (e.g.,comparable sizes of allmanufacturers haveidentical envelope andinterface dimensions.)ANSI process pumpsare, by definition, ahorizontal, end suction,single stagepump. The pumpmeets ANSI B73.1(ASME B73.1).
Considered an endsuction pump, framemounted. Normallysupplied with openimpellers.Dimensionallystandard sizessupplied by allmanufacturers.Available in a widevariety of alloys andnonmetals for manycorrosive services.
Transfer andprocess applicationsin chemical plants,pulp and papermills, refineries, foodprocessing plants,and generalservices inmanufacturingplants of all types.
Water and relativelythin liquids (won'tpump thicker oils).Can pump liquidswith or without solidsif proper impellertype is chosen.Available in alloys forcorrosive services.
Dimensionalstandardizationallows the completepiping, foundation,and building designto be completedbefore the pumpsupplier is chosen.Also, this permitsthe pump brand tobe switched in thefield without havingto repipe or modifythe motor,coupling, orbedplate. Thispump type hasmore materialoptions than othertypes.
10 5,000gpm38
18,927 lpm
50 750 ft
22 325 psi1 250 hp
API ProcessPumps
The API pump typeapplies to pumps builtto the API 610standard for pumpsfor refineries,pipelines, and otherhydrocarbonprocessingapplications. Itincludes end suction, horizontal split case,vertical turbine, andother types.
Meets API 610standard forhydrocarbonservices. Includesclosed impellers, withlocked wearing rings.Normally centerlinemounted to minimizethermal movement.
Hydrocarbontransfer andprocessingservices inrefineries, pipelines,and hydrocarbonprocessing plants.
Crude oil and alltypes ofhydrocarbons.
Meets API 610requirements,assuring safetyand reliability forhigh pressure, hightemperaturehydrocarbonservices.
10 10,000gpm
38 37,854lpm
50 7,500 ft
22 3251 psi
1 5,000hp
Axial Flow Pumps
Axial Flow pumps area very high flow, lowhead type of pump.Also called a propellerpump.
Single stage, highspecific speed impellerfor high flow low head.
Flood dewatering,power plantcirculating waterpump, evaporatorservices, andirrigation.
Water and relativelythin liquids. Canpump liquids with orwithout solids ifproper impeller typeis chosen.
This pump type isthe best type toachieve very highflow rate with verylow head, ahydraulicrequirementneeded for certainapplications suchas flooddewatering.
5,000 200,000gpm18,927
757,08 lpm
10 30 ft4 13 psi
10 1,500hp
Booster Pumps
Booster pumps areused to further boostthe pressure in asystem. It may be anend suction, inlinecirculator, horizontalsplit case, or verticalturbine in a can type ofpump.
Booster pumps arealmost always a multistage pump (hasmore than oneimpeller). All otherfeatures are quitespecific to theapplication.
Potable waterdistribution,irrigation booster,cooling waterbooster, processbooster service
Water and relativelythin liquids (won'tpump thicker oils).Normally not usedfor liquids containingsolids. Available inalloys for corrosiveservices.
Allows the buildingup of additionalpressure that isrequired to moveliquid a longdistance or to usethe high pressurefor spraying orother services.
5 10,000gpm
19 37,854lpm
200 7,500 ft
87 3,251 psi
1 5,000hp
Canned Motor
Canned Motor pumpsare sealless centrifugalpumps. The impeller isdirectly attached to the
Pump and motor areclose coupled, so nomechanical seal.Pump rotor includes acirculating path ofpumped liquid to
Pumping chemicals,hydrocarbons, orother liquids that aredifficult to seal, orwhere theconsequences ofleakage areserious. Pumping All types of thin (non
Eliminates themechanical seal,one of the largestcomponents of
5 1,500gpm 25 400 ft
0.5 300
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Pumps motor rotor, with a canseparating the wettedrotor from the motorstator.
lubricate sleevebearings and thrustsurfaces. These wearareas are made ofceramic, siliconcarbide, or tungstencarbide.
heat transfer fluidswhich are hightemperature orwhich are prone tocostly evaporativelosses withtraditionalmechanical seals.
viscous liquids). pump maintenancecost. Plus, thepump is assured tobe leakfree.
19 5,678
lpm
11 173 psi
hp
Chopper Pumps
Chopper Pumps are atype of centrifugalpump that is designedto chop up solids andstringy material as itpumps. It is availablein a vertical columnand end suctionconfiguration.
Pump impellercontains heavy dutygrinding teeth, andmany havereplaceable wearplates in the casing,to allow chopping ofsolids as the pumpoperates.
Chopper pumps areused in applicationsthat plugconventional solidshandlingwastewater pumpsin industrial,chemical, and foolprocessingfacilities.
Liquids containingsolids and stringymaterial that wouldotherwise be difficultto pump.
Able to pumpliquids containinglong stringymaterials or othersolids that wouldplug up in otherpump types.
50 10,000gpm189
37,854 lpm
15 200 ft
7 87 psi1 500 hp
Circulator PumpsCirculator pumps isgenerally a pump withinline suction anddischarge flanges.
Inline suction anddischarge pipingconnections. Pumpmay be equipped witha traditional motor andcoupling, or may havea wetted rotor motorthat eliminates theseal.
Circulator pumpsare used in HVACsystems in buildings(chilled watercirculation, hotwater circulation,potable watercirculation). Alsocirculation of coolingwater in plants.
Water and relativelythin liquids.
Inline design saveson floor space.
5 750 gpm
19 2,839lpm
20 180 ft9 78 psi
1 50 hp
Cryogenic PumpsCryogenic pumps areused to handle verylow temperatureliquids.
Special materials,seals, and clearancesto tolerate very lowtemperatures.
Low temperatureapplications inprocess industries,LNG supply, andsemiconductormanufacturing.
Ideal for very lowtemperature liquids.
Able to tolerate thelow temperaturesfound in certainapplications.
5 1,000gpm
19 3,785lpm
25 1,000 ft
11 434 psi
0.5 500hp
Drum Pumps
Drum pumps are usedto pump smallquantities of liquid outof drums and carboys.Pump is very slim to fitin drum opening.Normally supplied ascentrifugal pump, butpositive displacementpump types areavailable for thickerliquids and pastes.
Small diameter tubesurrounding the shaftfits into the opening ofa 55 gallon drum.Normally has a handtrigger controlledmotor.
Pumping smallquantities of liquidsout of 55 gallondrums and largercarboys.
Wide variety of thinand thick liquids,including corrosiveliquids.
Very practical wayto pump smallamounts of variousfluids that arestored in drums orcarboys.
0.5 70gpm
2 265 lpm
20 75 ft9 33 psi
0.25 1 hp
End SuctionPumps
End suction pumpsare the common typeof centrifugal pump.Has horizontal shaftwith overhungimpeller. Flow goes inthe end of the casing,and out the top.
Horizontal shaft,single impeller (seemultistage categoryfor pumps with moreimpellers). Variousimpeller types forclean and dirtyservices, manymaterial options
Any transfer orcirculation of liquid.Handles clean ordirty liquids, andliquids with lowviscosity. Liquidshould not containair or vapors.
Water and relativelythin liquids (won'tpump thicker oils).Can pump liquidswith or without solidsif proper impellertype is chosen.Available in alloys forcorrosive services.
Lowest first costoption for mostapplications.Stocked by mostdistributors incommon sizes.
5 7,000gpm
19 26,498lpm
10 750 ft
4 325 psi
0.125 250 hp
Fire Pumps
Centrifugal pump usedfor fire fighting inbuildings, plants, andother locations. Maymeet UL/NFPAstandards for firepumps. Normally this isa horizontal split caseor vertical turbinepump for UL/FMservices. Non listedpumps may be endsuction type.
Listed pumps meetthe requirements ofUL/FM for firefightingservices.
Fire fighting servicesof all types, bothUL/FM listed andunlisted.
Water
Meetsrequirements ofUL/FM for firefighting pumps.Suppliers ofteninclude completesystem, includingengine andcontrols.
20 5,000gpm
76 18,927lpm
100 1,200 ft
43 520 psi
10 800hp
Grinder Pumps
Grinder pumps are atype of submersiblesewage pump that hascutting teethincorporated onto theimpeller, to grind thesewage for pressuresewer applications.Also available inprogressing cavitypump positivedisplacement type.
Grinding teeth on theinlet of the impeller,submersible motor.
Residentialpressure sewersystems.
Sewage and otherwastewater.
This type ofsewage pumpallows smallerdiameter sewagelines than typicalgravity drainsewers. Also, thesewer lines canfollow the contourof the land sincethey don’t have tocontinuously drainto the collectionpoint.
5 50 gpm
19 189 lpm
50 150 ft
22 65 psi0.5 5 hp
Horizontal SplitCase Pumps
Horizontal Split Casepumps are a types ofcentrifugal pump typehas a single doublesuction impellersupported betweenbearings. Casing issplit horizontally formaintenance. Suctionand discharge flangesare opposed to eachother.
Double suctionimpeller gives betterNPSH and lower axialthrust. Casing isnormally doublevolute, to reduceradial bearing loads. Pump has two seals,both sealing suctionpressure.
Usually higher flowrate applicationsthan end suctionpumps. Used forcooling water, plantmakeup water,potable waterdistribution, firepumps, pipelines,and other mainprocess flows.
Water and relativelythin liquids (won'tpump thicker oils).Normally not used forliquids containingsolids. Available inalloys for corrosiveservices.
This pump typepermits muchhigher flow ratesthan end suctionpumps. The doublesuction impeller hasno axial thrustloads, and is lesslikely to cavitate.
100 100,000gpm379
378,540 lpm
50 1,500 ft
22 650 psi
3 5,000hp
Jet pumps are a typeof home water well
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Jet Pumps
pump that is used forlower flow rates thanvertical turbine types.It is a horizontal endsuction pump, putmakes use of anejector to assist theflow.
Horizontal endsuction pump withejector eithermounted on the pump(for shallow wellservices), or locateddown in the well.
Domestic waterwells Water
Lower costdomestic wellpump thansubmersible.
1 70 gpm
4 265 lpm
20 200 ft
9 87 psi0.5 5 hp
Magnetic DrivePumps
Magnetic drive pumpsare a type of seallesscentrifugal pump. Ittransmits the torquefrom the motor to theimpeller by means of arotating outer magnetwhich transmits themagnetic flux througha can to an innermagnet that isattached to theimpeller. The inside ofthe can is thus isolated,with no shaftpenetration, and theseal is eliminated.
Magnets are typicallymade of ceramic,samarium cobalt, orneodymium. Bushingsand thrust surfacesinside the can aremade of siliconcarbide or tungstencarbide, or ceramic, tohandle the potentiallyabrasive liquid thatcirculates inside thecan. Most must beprotected against lossof flow, which couldseriously damage thepump due totemperature buildupdue to the magneticflux.
Pumping chemicals,hydrocarbons, orother liquids that aredifficult to seal, orwhere theconsequences ofleakage are serious.Pumping heattransfer fluids whichare hightemperature orwhich are prone tocostly evaporativelosses withtraditionalmechanical seals.
All types of thin (nonviscous liquids).
Eliminates themechanical seal,one of the largestcomponents ofpump maintenancecost. Plus, thepump is assured tobe leakfree.
5 4,000gpm
19 15,142lpm
25 1,000 ft
11 434 psi
0.5 300hp
Multistage Pumps
Multistage pumps usemultiple impellers witheither diffusers orvolutes generate morehead than single stage(single impeller)pumps. Available inhorizontal and verticalorientations.
Casing may be splitradially or axially.Axial thrust may ormay not be balancedout, depending ondesign. Impellers areenclosed design withdiffuser or volutecasing.
Higher pressureservices such asboiler feed water,condensate,pipelines, reverseosmosis, anddecaling.
Water and relativelythin liquids (won'tpump thicker oils).Normally not usedfor liquids containingsolids. Available inalloys for corrosiveservices.
Best ways to gethigh pressure witha centrifugal pump.Thrust loads maybe lower thansingle stagedesigns.
5 10,000gpm
19 37,854lpm
200 7,500 ft
87 3,251 psi
1 5,000hp
RegenerativeTurbine Pumps
Regererative turbinepumps are notconsidered a truecentrifugal, but workson the same kineticprincipal as acentrifugalpump.Instead of animpeller with vanes,the turbine impellerhas blades similar toturbines, whichgenerate the head.Normally it is endsuction, single stage,though multistageversions are available.
Normally single stage,though multisage isavailable. Pump hasvery tight internalclearances, so liquidpumped must be quiteclean. Pump has verysteep headcapacitycurve, so pump mustbe protected againstpossibly operatingagainst closed valve.
Small boiler feedpumps for drycleaners, bakeries,and similar smallcommercial boilers.Also used in OEMapplications such aschiller and lasercooling.
Thin, clear liquids.
Very compactpump for low flow,high headapplications. Thismay result in spacesavings andreduced cost forsmall boiler feedpumps. This pumptype handles vaporand air mixed inwith the liquidbetter thantraditionalcentrifugal pumps.
1 200 gpm
4 757 lpm
50 1,200 ft
22 520 psi0.5 75 hp
Slurry Pumps
Slurry pump is ageneral term for apump that handles anabrasive slurry. Theymay be considered anend suction pump,vertical column pump,or submersible pump.
Pumps areconstructed either ofhigh nickel cast iron(white iron) towithstand theabrasive wear ofslurries, or the pumpis lined with rubber formore roundedgedslurries. Pumps oftenhave replaceablewear plates on one orboth sides of theimpeller.
Mining, mineralsprocessing,transportation ofslurries forprocessing, anddredging. Alsopumps used inslurry applicationsin coal fired powerplants, steel mills,cement mills, etc.
Very abrasive liquidsof all types.
Ordinary pumpswouldn't withstandthe abrasive wearthat slurries causeon pump parts.Slurry pumps aredesigned to handleabrasive slurriesand give pumpsthe longest lifepossible.
10 30,000gpm38
113,560 lpm
30 250 ft
13 108 psi
1 2000hp
SelfPrimingPumps
SelfPriming pumpsare a type ofcentrifugal that can belocated above thesuction reservoirwithout an externalpriming system. Endsuction configuration,but enlarged case tosupport priming.
No need for externalpriming or foot valves.
Sump pumps anddewateringapplications.Transfer serviceswhere pump mustbe located abovethe suction vessel.
Water and relativelythin liquids (won'tpump thicker oils).Can pump liquidswith or without solidsif proper impellertype is chosen.Available in alloys forcorrosive services.
No need forexternal priming
5 7,000gpm
19 26,498lpm
10 350 ft
4 152 psi1 150 hp
SubmersiblePumps
Submersible pumpsinvolve a submersiblemotor with a closecoupled to singlestage pump thatallows the entireassembly to operatedsubmerged.
Submerged motor,either airfilled or oilfilled. Differentimpellers aredesigned toaccommodate solidsof various sizes.
Sump pumpservices, effluentand sewageservices ranging insize from productsfor homes to mainsewage treatmentplants.
Water and relativelythin liquids (won'tpump thicker oils).Can pump liquidswith or without solidsif proper impellertype is chosen.
Eliminates columnshaft and bearingsfound in columnsump pump. Morecompact, reducedsump installationcost. May belocated in areasprone to flooding.
5 7,500gpm
19 28,391lpm
10 200 ft........
4 87 psi
0.25 250hp
Trash Pumps
Trash pumps are atype of selfprimingcentrifugal orsubmersible centrifugalpump designed tohandle rocks and othersolids whiledewatering.
Open or nonclogenclosed impellers,designed to passrocks and otherdebris. Pumps may beselfpriming. Sealsusually have hardenedfaces.
Dewateringconstruction sites,mines, and utilitypits.
Dirty watercontaining mud,rocks, stone, andother debris.
Designed to pumpthe solids andabrasives found inmany dewateringapplications.
5 1,000gpm........
19 3,785lpm
25 150 ft
11 65 psi
0.25 50hp
Vertical sump pumps Various impeller types Water and relatively
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Vertical SumpPumps
involve a vertical shaftsupported in a centercolumn. Singleimpeller, open orenclosed, pumpsthrough a volutecasing and then out adischarge columnpipe.
for clean and dirtyservices. Sleevebearings in thecolumn pipe need tobe lubricated by thesump water, orexternally with wateror grease.
Sump pumpservices.
thin liquids (won'tpump thicker oils).Can pump liquidswith or without solidsif proper impellertype is chosen.Available in alloys forcorrosive services.
Relatively low costsump pump. Mostdesigns need noshaft seal, sinceshaft column notpressurized.
5 7,500gpm
19 28,391lpm
15 150 ft
7 65 psi
0.5 250hp
Vertical TurbinePumps
Vertical turbine pumpsare a vertical shaftpump that is designedto fit in a boreholewell. Can also pumpout of open reservoir,river, intake structure,or tank, or can bemounted in barrel forbooster pumpapplications. Pump canhave one or moreimpellers and diffuserbowls, depending ontotal headrequirement.
Available with openand enclosedimpellers. Sleevebearings in pumpdiffuser bowls arelubricated by liquidpumped. Vertical highthrust motor mountedon top for productlubricated lineshaftbearings, orsubmersible motormounted below pumpto eliminate lineshaftand lineshaft bearings.
Irrigation, potablewater supply, plantmakeup water,cooling water, firepumps, potablewater distribution,booster pumps,process pumps.
Water and relativelythin liquids (won'tpump thicker oils).Can pump liquidswith or without solidsif proper impellertype is chosen.Available in alloys forcorrosive services.
Only practical wayto pump from adeep well. Wideflow and headranges. Low floorspace usage. Immersed pumpeliminates priming.Canned pumpversion excellentfor low NPSHservices
50 150,000gpm189
567,810 lpm
15 2,000 ft
7 867 psi
1 5,000hp
Well Pumps
A type of verticalturbine pump designedespecially for use in adrilled borehole well. Also, for lower flowrates refer to jet pumptype above.
Available with openand enclosedimpellers. Sleevebearings in pumpdiffuser bowls arelubricated by liquidpumped. Vertical highthrust motor mountedon top for productlubricated lineshaftbearings, orsubmersible motormounted below pumpto eliminate lineshaftand lineshaftbearings.
Irrigation, potablewater supply, plantmakeup water,cooling water, firepumps, potablewater distribution
Water and relativelythin liquids. Canpump liquids with orwithout solids ifproper impeller typeis chosen.
Only practical wayto pump from adeep well. Wideflow and headranges. Low floorspace usage. Immersed pumpeliminates priming.
50 20,000gpm189
75,708 lpm
20 1,000 ft
9 434 psi
1 3,000hp
PositiveDisplacement
Pumps
A positive displacement(PD) pump is ageneral name for apump type that doesnot have impellers, butrather relies onrotating orreciprocating parts todirectly push the liquidin an enclosed volume,until enough pressureis built up to move theliquid into thedischarge system. Thisincludes many specifictypes for specificapplications, asdescribed below.
Pump works onpositive displacementprincipal, either rotaryor reciprocating type.See below forfeatures of specifictypes.
All types of servicesin many industrieswhere positivedisplacement pumpsare favored overcentrifugal pumpsdue to high viscosity,presence of fragileor shear sensitivesolids, or need forlow flow and highpressure.
High viscosity fluids,some thinner fluids,fluids containingsolids, especiallyfragile solids, andshear sensitiveliquids.
Best choice forhigher viscosityservices, and tomove liquids gently.May also beneeded for lowflow, high pressurecombination, orother applicationniches. Some typesare inherently selfpriming, andseveral types aresealless.
0.1 15,000gpm
.38 56,781
lpm
10 100,000psi
.7 6,895 bar
0.5 5,000hp
AODD Pumps
AODD pumps are anytype of reciprocatingdiaphragm pumpcontaining twodiaphragms anddriven by air instead ofby electric motor.
Air section withshuttle valve appliesair alternately to thetwo diaphragms.Each diaphragm hasa set of check valves.
Many applicationsin general plantservice whereelectricity isn'tavailable, or wherethe liquid beingpumped has highsolids content orhigh viscosity.
Wide range ofliquids, includingliquids containingsolids, and corrosiveliquids.
Can be usedwhere noelectricity isavailable, ifcompressed air isavailable. Availablein a variety ofmetal and nonmetallic materialsdepending on thefluid pumped. Ableto pump liquidscontaining largesolids. Pump issealless and canrun dry.
0.25 300gpm1 1,136
lpm
10 125 psi.7 9 bar
0.25 30hp
Concrete Pump
Concrete pumps are atype of reciprocatingpositive displacementpump that is speciallydesigned to pumpconcrete and othermixed aggregatesolutions.
High pressuredischarge for pumpingconcrete longdistances or up highelevations. Materialsof construction thatcan handle theabrasive aggregate.
Concrete pouring,constructionprojects.
Concrete and otheraggregate solutions.
Best way to moveconcrete longdistances and upheights duringpour.
10 1,000gpm
38 3,785lpm
25 1,000 psi
2 69 bar
10 500hp
Diaphragm Pumps
Diaphragm pumps area type of reciprocatingpositive displacementpump in which liquid ispumped by areciprocatingdiaphragm, which isdriven by a solenoid, amechanical drive, or afluid drive. Otherversions are airoperated (see AODDtype below). Pumphas inlet and outletcheck valves.
Pump containsreciprocatingdiaphragm and inletand outlet checkvalves.
Many applicationsin general plantservice where theliquid being pumpedhas high solidscontent or highviscosity.
Wide range ofliquids, includingliquids containingsolids, and corrosiveliquids.
Handles a widerange of liquids,including liquidscontaining solids.Pump is sealless,and can run drywithout damagingthe pump.
1 1,800gpm4 6,814
lpm
25 15,000psi
2 1,034 bar
0.5 2,000hp
Flexible impellerpumps are a type ofrotary positive Used as bilge and
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Flexible ImpellerPumps
displacement pumpthat has a rotatingrubber impeller withvanes that bend andthen straighten as theimpeller rotates toconform to the internalcam in the pumpcasing.
Various rubbermaterials available forcorrect compatibilitywith the fluid pumped.
ballast pumps insmall and mediummarine services.Also found in otherapplications in plantswhere fluids containsome solids.
Water, seawater,and other thin liquids,including liquidscontaining somesolids.
Relatively low costway to move liquidscontaining someamounts of solids.
5 150 gpm
19 568 lpm
10 60 psi.7 4 bar
0.25 10hp
Gear Pumps
Gear pumps are atype of rotary positivedisplacement pump inwhich liquid is pumpedby passing betweentwo meshing gearsand the surroundingcasing. There areinternal and externalgear types.
Internal and externalgear types. Typicallydoesn't handle solidsor abrasive liquids.
Most commonpump for clean oilsand other viscousliquids.
Oils and other highviscosity liquids.Usually only suitedfor clean liquids (nosolids).
Most widely usedfor clean oilservices. Fewmoving parts,simpleconstruction.
1 1,500gpm4 5,678
lpm
10 2,500 psi
.7 138 bar
0.5 2,000hp
Lobe Pumps
Lobe pumps involvetwo shafts drive lobeswhich mesh with eachother, but do not touchdue to the use oftiming gears. Thisallows gentle pumpingof liquids containingsoft or fragile solids, orviscous liquids.
Pump has timinggears so that lobesdon't contact eachother while pumping.Available in sanitaryoptions for food,pharmaceutical, andbiotech services.
Available in sanitaryoptions for food,beverage,pharmaceutical, andbiotech applications.
Liquids which areviscous or whichcontain fragile solidsor are shearsensitive.
This is the normalpump of choice forsanitaryapplicationspumping viscousliquids or liquidscontaining fragilesolids. No metal tometal contact insidethe pump.
25 3,000gpm
95 11,356lpm
50 450 psi
3 31 bar1 500 hp
Metering Pumps
Metering pumps are atype of reciprocatingpositive displacementdiaphragm pump thathas a very low flowrate (typicallymeasured in gallonsper hour or per day,rather than perminute). Flow rate isadjustable.
Pump is typically adiaphragm style,though older designsare plunger type.Diaphragm is drivenby solenoid,mechanical actuation,or hydraulic actuation.Pump includes inletand outlet checkvalves. Normallycontains stroke lengthadjustment to varyflow rate, and somepumps can alsocontrol flow rate withspeed control.
Used to meter ordose very low flowrates with highaccuracy. Mostcommon applicationis chemicaltreatment of waterin boilers, coolingtowers, potablewater, etc.
Wide variety of thinand thick liquids,including corrosiveliquids.
Accurate,repeatablevolumetric flowmeasurement.Ability to easilyadjust the flow rateby adjusting strokelength or speed.
.01 20gpm.038 76
lpm
10 30,000psi
.7 2,068 bar
0.125 60hp
Peristaltic Pumps(Hose Pump)
Peristaltic pumps orhose pumps are a typeof rotary positivedisplacement pumpthat has a roller orshoe that squeezes atube or hose as itrotates. The squeezingaction moves the liquidalong the tube.
Includes replaceablehose that must becompatible with thepumped liquid. Thishose is typically able tobe replaced whenworn.
This pump type isused to handlechlorine and otherdisinfectants incommercialswimming pools, inwineries, in sewagetreatment plants,and in many OEMapplications wheresealless pumping isa plus.
Wide range of liquids,including liquidscontaining solids, andcorrosive liquids.
This pump typerequires no seal,and keeps theliquid inside thetube, so zeroleakage.
0.2 200gpm
.78 757lpm
10 250 psi
.7 17 bar
0.125 40hp
Piston Pumps
Piston pumps are atype of reciprocatingpositive displacementpump that has, doubleacting reciprocating pistons.
Pump includes one ormore double actingpistons, sealed withorings againstcylinder walls. Pumphas an inlet and outletcheck valve for eachpiston.
Used in oilproduction, in washdown services,pressure washing,car washes,reverse osmosis,and otherapplications wherehigh pressure isneeded.
Water and other thinliquids, includingliquids containingabrasives.
May be betteralternative thanplunger pump incertainapplications, suchas abrasive liquids.Slower speedsmay mean lessmaintenance.
5 700 gpm
19 2,650lpm
50 5,000 psi
3 345 bar1 500 hp
Plunger Pumps
Plunger pumps are atype of reciprocatingpositive displacementpump that has,typically, three or fivesingle actingreciprocating plungers.
Pump includes one ormore single actingplungers, sealed withpacking againstcylinder walls. Pumphas an inlet and outletcheck valve for eachplunger.
Used in oilproduction, in washdown services,pressure washing,car washes, reverseosmosis, and otherapplications wherehigh pressure isneeded.
Water and other thinliquids, crude oils.
Best way toachieve very highpressures whenpumping.
5 1,200gpm........
19 4,543lpm
50 100,000psi........
3 6,895 bar
1 5,000hp
Progressive CavityPumps
Progressive cavitypumps are a type ofrotary positivedisplament pump thathas a singlethreadedhelically shaped rotorturning inside of adoublethreadedhelically shapedrubber stator. Thisproduces aprogressing cavitythat moves the liquidthrough the pump andpressurizes it.
Rotor is aninterference fit insidethe electrometricstator to minimizeleakage (slip).Starting torque maybe higher thanrunning torquebecause of this.
Used to pumppolymers anddewatered sludge insewage treatmentapplications, and inpumping liquidswhich are viscousor contain solids inindustrial plantssuch as pulp mills,petrochemical, andchemical plants.
Wide variety of thinand thick liquids,including corrosiveliquids and liquidscontaining solids.
Sometimesconsidered thepump of lastresort, as it willhandle difficultliquids which areviscous or containsolids and whichother pump typescannotaccommodate.
10 2,400gpm
38 9,085lpm
50 2,000 psi
3 138 bar1 500 hp
Screw Pumps
Screw pumps use twointermeshing screws,driven by timing gears,move oils and otherviscous liquids. Alsoavailable with threescrews, one driving the
Two screw pumpsmake use of timinggears so that meshingscrews don't driveeach other. Triplescrew types have onescrew driving theother two and don't
Fuel transfer,elevators, and otherapplicationsrequiring relativelyhigh flow rates ofviscous liquids.
Oils, fuels, and otherhigh viscosity liquids.Also handles twophase liquid/gasmixtures.
Highest flow rate ofpositivedisplacementpumps.
50 15,000gpm189
56,781 lpm
50 4,500 psi
3 310 bar
5 5,000hp
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other. include timing gears.
Vane Pumps
Vane pumps use arotor with vaneslocated in slots,rotating inside aneccentrically shapedcasing. As the rotorturns, the vanes movein and out of the slots.
Sliding vanes areoften made ofcarbon.
An alternative to agear pump fortransferring oils andother viscousliquids. Also goodfor thinner liquids.
Oils and other highviscosity liquids.Usually only suitedfor clean liquids (nosolids). Also good forthin liquids likegasoline and water.
Good for both thickand thin liquids, sooften chosen forterminals and truckunloading wheremany types ofliquids are handled.
5 2,500gpm
19 9,464lpm
20 200 psi
1 14 bar1 300 hp
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