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P N E U M A T I C D R I V E N L I Q U I D P U M P S

W e l c o m e t o H a s k e l

Haskel is an international organization offering a worldwide service through the Haskel group of companies and factory trained distributors. The Haskel group is headquartered in Burbank, California, with facilities throughout the world. We have built an enviable reputation for quality based on high pressure fluid and gas handling equipment.

In addition to offering a comprehensive range of pneumatic driven liquid pumps, air amplifiers, pneumatic and hydraulic driven gas boosters, high pressure valves, fittings and accessories, we custom design and build power pacs and test rigs. Our continued investment in technology ensures that Haskel will stay at the leading edge of high pressure technology.

This brochure introduces our pneumatic driven liquid pump range. Technical details and advice on any of the products shown is available on request.

We are here to solve your problems. Just give us a call at 818-843-4000 or visit our website at www.haskel.com for more information or to locate a distributor.

Safepneumaticoperationnoheat,flameorsparkrisk Upto100000psi(7000bar)capability Infinitelyvariablecyclingspeed Stallfeatureatpre-determinedpressuretoholdthatpressure

without consuming power Problem-freestop/startapplications Easilyautomatedmanymodificationandcontroloptions Suitableformostliquidsandliquefiedgases Alternativegasdriveoptionssourgas,naturalgas,

boil off gases, nitrogen

Noneedforairlinelubricationsavescostsand prevents contamination

Robust,reliable,compactandeasytomaintainprovendesign Unbalancedcyclingspoolprovidesimmediateresponseto

pressure changes Alsoavailableinstandard,orcustombuiltpowerpac

configurations Excellentworldwideserviceforsparesandrepairs CanbemanufacturedtomeetAPI675,ATEX,CEandNACE

Why Use Haskel Pneumat ic Dr iven Pumps?

Our pumps offer many advantages over electrically driven pumps:

A p p l i c a t i o n s i n c l u d e :

Pressuretesting Workholding/powerclamping Jacking/lifting Valveactuatorcontrol Hydrauliccylinderactuation Presssafetyoverloaddevices Rollertensioning Metering Precisionlubricationand

spraying Liquifiedgastransfer

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P r e s s u r e a n d F l o w o n D e m a n d

This guide will help you to pre-select the pump ideally suited for your application. If you have specific questions, however, we urge you to provide us with details of the duties you require fromthepump,availableair/gasdrivepressure,andpressure/flow requirements, and we will recommend a model and any corresponding accessories.

O u t p u t H o r s e p o w e r R a t i n g s

Thepumpsarecategorizedontheirhorsepowerratings(seepages6-7).Theseareapproximateandpeakat100psi(7bar),assumingadequatedriveair,pressureandvolume.Peakhorsepowerisatabout75%nominal ratioxairdrivepressure,i.e.100:1pump@100psiairdrivepeaksat100x100=10000x0.75psi=7500psi(517bar)hydraulicpressure.

D o u b l e a n d T r i p l e A i r H e a d P u m p s

Performancecanbeextendedbystackingairpistonswithoutchanging the hydraulic piston. Haskel multi-head pumps consume less air than competitive single head pumps of the same area, as onlyoneheadispressurizedonthereturnstroke;e.g.,ona1.5hppump additional heads can raise performance to 2 hp.

Double air head pumps are identified by the last digit 2 in the pumpmodelnumber.Thus,anominal50:1ratiopumpwithtwoairheadsisdescribedasa52.Similarly,atripleairheadpumpisidentified with a last digit 3. Thus, a 900 ratio pump with three air heads is described as a 903.

O p e r a t i o n

The pumps automatically reciprocate on a differential piston principle.Alargepistondrivenbyrelativelylowpressuredrive acts directly upon a smaller hydraulic piston.

The nominal ratio between piston sizes is indicated in the modelcodingandapproximatestothemaximumworkingpressure. The actual ratioisabout15%abovenominalsothat the pump continues to cycle when drive pressure equals nominalratio.Initially,thepumpwillcycleatmaximumspeedacting as a transfer pump to pressurize downstream.

It will cycle at a slower rate as the fluid meets resistance untilitstallsatmaximumoutputpressure.Whenapressuredrop downstream occurs, it will recycle as necessary in anefforttomaintainmaximumpressure.Stallpressureisachieved when the outlet pressure rises and offers more resistance to the reciprocating differential piston assembly. The piston assembly then stalls when the forces balance, e.g. whendrivepressurexdrivepistonareaequalsoutlet(stall)pressurexdrivenhydraulicplungerarea.Thepumpdesignis sensitive to very small pressure drops due to the low frictional resistance of the large diameter drive piston and hydraulic piston seals.

S i n g l e D r i v e H e a d P u m p

0.65sqin(4sqcm)Therefore, actual ratio=40:1NominalRatio=35:1

25.9sqin(167sqcm)

D o u b l e A i r H e a d P u m p

Area.65sqin(4sqcm)Therefore, actual ratio=79:1NominalRatio=72:1*

Area25.2sqin(163sqcm)

Area25.9sqin(167sqcm)

T r i p l e A i r H e a d P u m p

Area.65sqin(4sqcm)Therefore, actual ratio=118:1NominalRatio=103:1**

Nominal Ratio * (2)IndicatesDoubleDrivePiston** (3)IndicatesTripleDrivePiston

Area25.2sqin(163sqcm)

Area25.2sqin(163sqcm)

Area25.9sqin(167sqcm)

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Anatomy of a Pneumat ic Dr iven Pump

1. Drive SectionThepiston,completewithOringseal,operatesinanepoxyfilled,fiberglass wound barrel, the diameter of which is constant throughout a given series of pumps. Drive media forces the piston down on the compressionstrokeandraisesitonthesuctionstroke(Mserieshaveaspringreturn).Thepistonispre-lubricatedduringassemblyandthereforeno air line lubricator is necessary.

2. Hydraulic Section/Check ValvesThis is directly linked to the drive piston by the hydraulic piston, the bottom portion of which is in the hydraulic body. Outlet flow and pressure are determined by the area of the hydraulic piston head, its nominal ratio with the drive piston head, and drive pressure. On the down stroke, liquid in the hydraulic section is forced under compression through the outlet check valve. Fresh liquid is induced via the inlet check valve on the return stroke. These check valves control the flow of liquid through the hydraulic section. They are spring-loaded and have a very low crackingpressure,allowingmaximumopeningontheinductionstroke.The pressure of hydraulic fluid on the down stroke closes the inlet check valve and acts against the spring to open the outlet check valve.

3. Drive Cycling ValveThis is a pilot-operated, unbalanced, lightweight spool, which directs drive pressure, first to the top of the drive piston, and then to the undersidetoreciprocatethepiston(cycle).Itactuatesviapilotvalvesatthe top and the bottom of the stroke, which causes the unbalanced spool to shift and reciprocate the piston.

4. Hydraulic Seal/Check ValvesThis is one of the few wear parts. Its function is to allow the hydraulic piston to reciprocate without passing fluid into the drive section. The liquid, itspressureanditstemperaturedeterminesealspecification.Adistancepiece can be incorporated between drive and hydraulic sections for complete contamination-free operation on most Haskel pumps.

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1. Drive Section

2. Hydraulic Check Valves

3. Drive Cycling Valve

4. Hydraulic Seal/CheckValve

P u m p S e l e c t i o n I n f o r m a t i o n

AllHaskelpumpsareidentifiedbyletterscodingthetypeofpump, followed by a number indicating the practical working ratio

of the drive area to the hydraulic plunger area. These letters are explainedinthechartbelow.

Pump Model Letter Coding

Q u i c k M o d e l C o m p a r i s o n C h a r t

The chart to the right shows thepressure/flowcapability of each pump in the range. The diagonal lines show constant output horsepower for each series. The model ratios are circled.

ExampleThe pressure required is 2175psi(150bar).Theflowrequiredis215cubicinches(3.52liters)perminute.Theblack dot plots position. Only models on diagonals to the right of the dot will meet the demand;e.g.,the-35ratio1.5hppump,assumingasupplyat100psi(7bar)and70scfm(119m3/hr)canbemet;ifnot,a-32or-522hppump would be needed.

Thediagonalhorsepowerlinesinthechartbelowarebasedon100psi(7bar)drivepressure. Drive flow requirement is different for each series as follows:

Note: For specific performance curves, refer to Liquid Pump Rapid Reference Guide.

Reducedairdrivefloworpressurewillresultinacorrespondingreductioninoutputhorsepower.This chart can be used to select pump series and model ratio.

.33 hp 15scfm(25m3/hr) 3 hp 85scfm(144m3/hr)

.75 hp 45scfm(76m3/hr) 6 hp 175scfm(297m3/hr)

1.5 hp 70scfm(119m3/hr) 8 hp 225scfm(382m3/hr)

2 hp 85scfm(144m3/hr) 10 hp 270scfm(459m3/hr)

M .875stroke.33hpminiaturepumpseries XH 2stroke1.5+2hpExtremeHighPressurepumpseriesS Stainlesssteelhydraulicpistonandbody G 4.5stroke6hppumpseries29723 .33hpChemicalPump 8 4.5stroke8hppumporboosterseriesD (Prefix) PumpincorporatesaDistancePiece 14 4 stroke 10 hp pump seriesD (Suffix) DoubleActingpump W PolyurethaneU-cupdynamicseal4B 1stroke.75hppumpseries(bottominletonly) F UHMWPE(Ultra-highMolecularWeightPolyethyleneDynamicSealA 2stroke1.5+2hppumpseries T ReinforcedteflondynamicsealH 2stroke1.5+2hpHighPressurepumpseries V Vitono-ringstaticseal-C Filter,regulatorwithgaugeandshut-off/speedcontrolvalve -B Bottom inlet

-CP Chemica