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Centrifugal

Slurry

Pump

Wilfley

M o d e l KTechnical Handbook

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Wilfley Model K Pumps

A Slurry Pump for the Most Abrasive Slurries

Single stage Side suction Horizontal To 12" discharge

Sealess Design

The Wi lf ley Expeller No water gland, pump or piping

No mechanical seals No air pressure No stuffing box

A Wilfley Can Run Dry becausethere is no Rubbing Contact whileRunning

No dilution No contamination No leaking while running

Wilfleys are sealed by hydraulicpressure while running. Thiscentrifugal seal is created by theexpeller which was developed morethan 80 years ago. Wear isminimized on the Wilfley expellerbecause it operates against suctionpressure only.

Leakless at Shutdown

The Wi lf ley Check Valve Long wear life Low cost Reliable Easily cleaned

When the K is shut down, thecheck valve seals against the shortcylinder head.

Maintenance

The Wi lf ley Design Advantage Quick change wear parts Dual Side intake

Maintenance is a majorconsideration in the development of

all Wilfley Pumps. All moving partsin the K can be changed withoutdisturbing the suction or dischargepiping.

Service-Support

Wilfley Integrity Large replacement inventory Engineering assistance for the lifeof the pump Quality craftsmanship

A.R. Wi lf ley & Sons has alwaysproduced the finest sealesscentrifugal pumps. W ilfley iscommitted to quality, durability andcustomer satisfaction. Wilfley stillsells parts for and services pumpsthat have been in continuousservice for more than 80 years. It isa tradition at Wilfley. The Wilfley K continues the legacy that is A.R.Wilfley & Sons.

Discharge

Expeller createspressure keepingfluid from shaft.

Impeller pumpsfluid from intaketo discharge

Suction Inlet

1

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General Installation Recommendations

This list will help establish specificpumping conditions.

Solution Temperature Static Head Discharge Pipe Size Length, Discharge Pipe Discharge Pipe Fittings Equivalent Length Discharge Pipe Total Head

Maximum Suction Pressure Minimum Suction Pressure CapacityGPM Specific Gravity % Solids by Weight Maximum Size of Solid Particles Mesh Analysis Electrical Characteristics Viscosity

Choosing Pump Location

The following recommendationsmay be helpful when choosing thebest location for your pump.

a. Locate the pump as close to theliquid source as practical so thatthe suction pipe is short and directwith a minimum of elbows, fittingsand valves

b. Place the pump in a location sothat the unit is accessible forinspection during operation as wellas for maintenance operationsinvolving removal and disassembly.

Foundation

The founda tion should besufficiently substantial to absorbany vibration and to form apermanent, rigid support. A concrete foundation on a solid baseis satisfactory. Foundation bolts of the proper size should beembedded in the concrete locatedby the outline drawing.

Alignment The pump and motor are al igned atthe factory before shipment.Realignment may be necessary afterthe complete unit has been leveledon the foundation and after thefoundation bolts have beentightened. Explicit directions forchecking and aligning the pumpcomponents may be found in theHydraulic Institute Standards.

Wilfley hydraulic seal in actual operation.

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Features and Components

This closed type impeller withextra thick shrouds and vanesis available in standard portdesign or wide port design forviscous, frothy, or large particleslurries. The unique designhelps to maintain excellentperformance characteristicsthroughout its wear life.

Crane assembly (not illustrated)allows the case to be opened orremoved quickly without usingseparate lifting equipment.(available in sizes 3" through 8")

The extra heavy wall thickness andspecial volute design extends wear life.

The impeller bolt functions both asa shear pin and to hold the impelleragainst the taper of the shaft.

The integrated bell-shaped expellerprovides a positive hydraulic leakagesealing arrangement eliminatingmaintenance associated with packing,water glands, or mechanical seals.

The heavy section follower platecan be rotated to prolong wear life.

The frame protecting ring is made ofabrasion resistant material to protect

the inlet chamber from excessive wear.

The rear inlet design allows for removalof the case without disturbing piping,reduces surging, controls pre-whirl, andcan be vented for froth applications.

The case bolts are extra largeso that fewer are required.Each nut is convenientlylocated for quick disassembly.

3

The discharge keeperassembly supports thedischarge piping duringmaintenance so that the

case can be opened orremoved withoutdisconnecting piping.

The centrifugallyoperated check valveprovides a seal atshut-down and opensthe seal at start-up toinsure that there is norubbing contact whilethe pump is running.

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The draw bolt is provided to adjust forwear to maintain peak pump performance.

The shaft is made of extrastrength, high quality steel.Bearing shoulder diameters areground for precision bearing fits.

Convenient, sturdy oil fillerelbow allows for simplepositive check on oil level.

The long cylinder has a largeoil reservoir for superior bearinglubrication. Bearing bores aremachined to precise concentricityfor proper bearing alignment.

The frame base is made of castiron with heavy rib reinforcementto withstand stresses.

Rubber Lined Intake Chamber optional

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1. Impeller Seal Face Adjustment -to maintain efficiency

One of the losses in a centrifugalpump is the re-circulation of thepumpage in the pump case backinto the suction of the impeller. Theamount of re-circulation dependsupon the clearance between theimpeller and the follower plate.On the Wilfley Model K pump aMINIMUM clearance is maintainedby a simple adjustment. This Wilfleyfeature is appreciated by all operatorsbecause it eliminates the need forincreasing the pump speed, addingmakeup water, early replacement of pump parts and other methods of maintaining efficiency.

2. Quick Change out of Wear Parts -to minimize down time

The five key wear parts case,impeller, follower plate, frameprotecting ring and die ring canbe changed within a few minuteswithout disturbing the suction or

discharge piping. This quick changeis made possible by the case crane(available on sizes 3"-8"), dischargekeeper, the use of only four casebolts, and the manner in which theimpeller is attached to the shaft.

This exclusive Wilfley feature savesvaluable time and manpower overother solids handling pumps that mayrequire hours to make accomplishsuch required maintenance.

Maintenance Features

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K Pump Capacities

2x1 2 1 / 2 x11 / 2

175

150

125

100

75

50

25

H - F

T .

10 100 1,000 10,000

CapacityGPM

4x24x2 1 / 2

5x3 6x4 8x5 10x6

12x8

14x10

16x12

Model K 2" x 1" through 12" x 8"Model L 14" x 10" through 16" x 12"

5

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General Characteristics

Model K pumps are available indischarge sizes ranging from 1"to 12". Cram arm assemblies thatsupport the case during maintenanceare available in discharge sizes 3"to 8". Larger pumps, designatemodel L use support base to slidethe case away from the pump.Special pump configurations areavailable for high suction head andextreme horsepower services. Eachpump is engineered to match serviceand system requirements.

Special Modifications

We are equipped to modify pumpsthat are used for special services.Such things as flush ports, speciallubrication systems and specialdrain plugs are common. We willalso engineer modifications requiredto fit your specific installation.

We provide engineering modificationsfor related pumping problems such

as maintenance and installation. Manyapplications require specific motor

and drive configurations as well asbase plates and mounting brackets.We will design and produce theseitems to your specifications andsatisfaction. We also have the capabilityto supply pumps with a number of exotic corrosion resistant paints.

Materials of Construction

A.R. Wilfley & Sons produces model K pumps in a variety of hard irons andstainless steels including proprietaryallows specially developed to standup to the difficult erosive-corrosiveconditions found in slurry services.

Wilfley Model K pumps are alsoavailable in natural rubber, syntheticelastimers and urethane.

Wear in a slurry pump is a complexprocess. It is a function of: The size and concentration of the

solid particles The shape and hardness of the

solid particles Temperature PH level

This type of wear invo lves sl idingand impact erosion in conjunctionwith corrosion. This combinationintensifies the effects of eachindividual type of wear. Materialhardness, fracture toughness andcorrosion resistance must beproperly balanced to providereasonable wear resistance. A.R.Wilfley & Sons developed proprietaryalloys that optimize this balance forpumping conditions where standardallows were not adequate. Maxalloy5 and Maxalloy 8 are two proprietaryalloys that significantly surpasstraditional white iron and NiHard incorrosion, erosion and corrosion-erosion services.

A. R. Wil fl ey & So ns has ov er80 years of experience designing,manufacturing and applying slurrypumps and can provide theexpertise to assist in selection of pumps and materials for a widevariety of difficult services.

Material

White ironNiHard 4

Maxalloy 5

Maxalloy 8

HardnessHBN

400-600620-670

580-720

415-520

TensileStrength(psi)

45,00080,000

80,000

90,000

FractureToughness(psi)

12,00022,000

30,000

20,000

ApplicationRange(pH)

5 84.5 8.5

3.6 9.5

1.3 12.2

6

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Pump Weights and Sump Dimensions

Complete Metal Pumps

Pump Size

Bare Pump

Direct Driven Pump with baseplate and flexible coupling

Overhead V-Belt Driven Pump withFixture (Less Sheeves & Belts)

Approximate Shipping Weight in Pounds

1

430

640

700

1 1 / 2

450

665

720

2

680

1060

950

21 / 2

690

1060

960

3

1030

1350

1300

4

1675

2120

2185

5

2150

2600

2820

6

2550

3350

3140

8

4150

5450

4850

10

6320

8230

7420

12

7900

10290

9275

14

9875

12860

11600

Sump DimensionsPump Size

WInches

HInches

I Inches

1" & 1 1 / 2"

18

36

46

2" & 2 1 / 2"

24

36

57

3"

30

42

68

4"

36

48

79

5"

4842 Min.

54

9690 Min.

6"

6048 Min.

66

118106 Min.

8"

7260 Min.

72

135123 Min

10"

8475 Min.

8475 Min.

166150 Min.

12"

132120 Min.

8475 Min.

166150 Min.

14"

150

96

192

16"

190

108

210

Intake Sump

It is desirable to feed the Wilfleypump by means of sump tank orfeed box placed as close to thepump as possible. Recommendedsump sizes are given below. Whenthe feed to the pump is increasedor decreased, the material in thesump simply seeks a higher orlower level, respectively. Hopperbottom sumps are much moresatisfactory than flat bottom sumps.

A sloping pipe from the intake sumpinto the pump is particularly desirablewhen handling materials that settlequickly, such as concentrates andcoarse sands, or when the quantityis small for the size of intake pipeand pump. Long suction pipesrequire sufficient velocity in the pipeto prevent setting.

Suction Piping

Suction pipe may be connected toeither or both sides of the pump andneed not be disturbed to change thepumping parts or bearing unit.

It is preferred that thesump tank is designatedfor a minimum of 3minutes restriction time.

7

I

CL of Intake

45 o

45 o

45 o

H

WW

Alternative SumpConstruction

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Dimensions in Inches

Size

111 / 2221 / 234

568

Discharge

111 / 2221 / 234

568

Suction

221 / 24456

81012

A

5959651 / 2651 / 267801 / 2

91931 / 2114

B

11 1 / 411 1 / 4131 / 8131 / 8145 / 8157 / 8

171 / 2181 / 224

C

3737423 / 4423 / 4423 / 4461 / 4

6361763 / 4

D

101011 3 / 411 3 / 4131 / 4141 / 2

1617223 / 8

E

11111212121 / 416

14161 / 4243 / 4

F

1111103 / 4103 / 412181 / 4

14161 / 4121 / 2

G

93 / 893 / 811 1 / 211 1 / 2131 / 8141 / 8

153 / 8165 / 8215 / 8

*H

2424281 / 2285 / 83140

433 / 8553 / 4627 / 8

J

13131515161 / 4203 / 8

22233 / 4281 / 4

K

1111131 / 2135 / 8143 / 4195 / 8

213 / 831**345 / 8

L

11 / 211 / 213 / 413 / 431 / 25

851 / 291 / 2

M

51 / 451 / 261 / 261 / 277 / 893 / 4

11 3 / 8121 / 4133 / 4

N

101 / 4101 / 411 3 / 411 3 / 4131 / 215

151 / 2187 / 820

O

2233 / 833 / 853 / 861 / 4

33 / 453 / 491 / 4

P

75 / 875 / 891 / 891 / 8137 / 8121 / 2

20171 / 422

Q

11 / 211 / 217 / 817 / 817 / 817 / 8

11 / 217 / 821 / 4

R3 / 43 / 43 / 43 / 43 / 43 / 4

7 / 87 / 87 / 8

S

223 / 8223 / 8253 / 4253 / 42315 / 16273 / 4

34377 / 8375 / 8

T

11 / 811 / 811 / 211 / 211 / 211 / 2

13 / 413 / 413 / 4

U

411 / 16413 / 1657 / 16511 / 1677 / 891 / 2

103 / 411 3 / 4161 / 4

V

413 / 16413 / 1661 / 1661 / 16513 / 168

33 / 445 / 810 1 / 4

Dimension P is the minimum clearance for removing wearing parts. Provide ample clearance at this point for removing the wearingparts as they are very heavy.Dimension K is distance from center of pump to outside of discharge sleeve.Dimension N is distance from center of pump to outside of suction flange. the feed may be from either side.Use 1 1/2" pipe sleeves around foundation bolts and allow 1/2" for grouting. Place valves in suction and discharge lines near pump.The suction line should be short, free from elbows if possible, and sloping when heavy materials or large particles are to be pumped.*Dimension H is the maximum height of the pump.**Rubber pump 22

Direct Driven

8

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Size

111 / 2221 / 234

568

Discharge

111 / 2221 / 234

568

Suction

221 / 24456

81012

A

281 / 4281 / 4303 / 4303 / 4295 / 8321 / 4

36401 / 2483 / 4

B

81 / 481 / 497 / 897 / 811 1 / 81213 / 16

141520

C

233 / 4233 / 4263 / 8263 / 8267 / 826

30351 / 840

D

7785 / 885 / 897 / 8119 / 16

121 / 2131 / 2181 / 2

E

11 / 411 / 411 / 411 / 411 / 411 / 4

11 / 211 / 211 / 2

F

41 / 241 / 243 / 843 / 823 / 461 / 4

653 / 883 / 4

G

61 / 261 / 28891 / 4107 / 8

12131 / 2171 / 4

*H

2121251 / 8251 / 8271 / 2351 / 2

393 / 8503 / 4565 / 8

J

10101119 / 321119 / 32123 / 4157 / 8

18183 / 422

K

1111131 / 2131 / 2143 / 4195 / 8

213 / 831**345 / 8

L

11 / 211 / 213 / 413 / 431 / 25

851 / 291 / 2

M

51 / 451 / 261 / 261 / 277 / 893 / 4

11 3 / 8121 / 4133 / 4

N

101 / 4101 / 411 3 / 411 3 / 4131 / 215

151 / 2187 / 820

O

45 / 845 / 861 / 461 / 4883 / 4

89121 / 4

P

991111151 / 415

231925

Q

11 / 211 / 213 / 413 / 413 / 421 / 2

221 / 43

R3 / 43 / 43 / 43 / 43 / 43 / 4

7 / 87 / 87 / 8

S

21 / 221 / 241 / 841 / 8315 / 169

91 / 4103 / 8105 / 8

T

7781 / 281 / 2611 / 16151 / 4

151 / 4153 / 4193 / 8

U

11 / 811 / 423 / 825 / 841 / 164

31 / 433 / 843 / 4

V

39 / 1639 / 1631 / 1631 / 16313 / 1651 / 2

71 / 283 / 811 1 / 2

W

771 / 287 / 891 / 811 5 / 8141 / 2

163 / 8167 / 8195 / 8

X

17 / 1617 / 16111 / 16111 / 1621 / 823 / 16

25 / 825 / 833 / 16

Y

31 / 431 / 441 / 241 / 241 / 267 / 16

73 / 1673 / 1685 / 16

AA3 / 83 / 83 / 83 / 81 / 21 / 2

5 / 85 / 83 / 4

AB3 / 163 / 163 / 163 / 161 / 41 / 4

5 / 165 / 163 / 8

Dimension P is the minimum clearance for removing wearing parts. Provide ample clearance at this point for removing the wearingparts as they are very heavy.Dimension K is distance from center of pump to outside of discharge sleeve.Dimension N is distance from center of pump to outside of suction flange. the feed may be from either side.Use 1 1/2" pipe sleeves around foundation bolts and allow 1/2" for grouting. Place valves in suction and discharge lines near pump.The suction line should be short, free from elbows if possible, and sloping when heavy materials or large particles are to be pumped.*Dimension H is the maximum height of the pump.**Rubber pump 22

Bare Pump

9

Dimensions in Inches

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Pump

10L12XL12L

A

171 / 4171 / 422

B

261 / 4261 / 417

C

202031

D

232331

E

1818235 / 8

F

793 / 4793 / 487

G

23 / 423 / 42

H

51 / 251 / 279 / 16

J

183 / 419219 / 16

K

241 / 2241 / 2281 / 2

L

111171 / 4

M

191923 1 / 4

N

181 / 2201 / 2211 / 2

OMin.-Max.

171 / 2-19 1 / 220-2220-22

PMin.-Max.

66-68703 / 4-72 3 / 472-74

QAve.

2111 / 162111 / 16231 / 2

R

929 / 32929 / 32133 / 16

SDia.

33 / 433 / 441 / 8

Key

1 / 2 X11 / 2 X11 / 2 X1

T

161518

U

5858593 / 4

Suction & Discharge Flange Diameters (125 Lb. Amer. Std.)

Pump10L12XL12L

AA141418

BB10,12,1412,14,16,18,2012,14,16,18,20

Pump14XL14L16XL

AA182020

BB14,16,18, 20,2414,16,18, 20,2416, 18, 20, 24, 30

L Series

11

Dimensions in Inches

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A.R. Wi lf ley & Sons, Inc.

P.O. Box 2330

Denver, Colorado 80201

303/779-1777

1-800-525-9930

FAX 303/779-1277

www.wilfley.com