A.R. Wilfley & Sons, Inc.

P.O. Box 2330

Denver, Colorado USA

80201

(303) 779-1777

Fax (303) 779-1277

Email: pumps@wilfley.com

Website: www.wilfley.com

S3TO2AC

Wilfley

M o d e l S 3

Technical Handbook

Wilfley Model S3 Chemical Slurry Pumps

Wilfley hydraulic seal in actual operation.

The combined corrosive and abrasiveaction of many of today’s modernprocesses have required compromisesfrom traditional pumps. Slurry pumpshave generally been too heavy indesign and uncompromising for alloyconstruction. Acid pump designs havebeen too light for some of the robustapplications. A clear need for an alter-nate choice was the reason for the birthof the Wilfley S3.

This unique Wilfley S3 was designedspecifically for corrosive/slurry applica-tions. The pumps have a strong, solidpower frame that can withstand highheads, speeds and specific gravities.It can be upgraded for extreme duties.

The pump’s hydraulic parts are designedto be made of a wide range of materials.The pump designs are flexible enoughto customize pumps for specific services.

Clearly, the most outstanding featureof the S3 is the Expeller/DryLockt sealcombination. The Expeller has been ahallmark of Wilfley pumps since 1919.Wilfley invented it and has perfected itsoperation during the last 80 years.

The Expeller seals the pump while running.The DryLockt is an adaptation of theseal that has made Wilfley’s A7 ANSIchemical pump a leader in corrosivefluid handling. The repeatable andpredictable smooth action of the sealensures leak free startups and stops.

Discharge

Pump Running/Seal Open

Pump Off/Seal Closed

Imp

elle

r

Exp

elle

r

Suction

The DryLockt has been modified tothrive in the most aggressive slurries.There is no rubbing contact while thepump is running and no need forcooling flushes. However, multipleflush ports are available to clear anycaking materials.

Wilfley free engineering service matchesthe pump to your specific application.Systems will be analyzed to ensureleak free, efficient and reliable pumpoperation. Each pump is tested beforeleaving our plant. It is through thisthorough preparation that we canguarantee the operation of Wilfleypumps to your complete satisfaction.

Wilfley’s application and engineeringstaff continue to provide the most upto date information and innovative tech-nology on pumps and pump processesto customers and the world. The S3joins Wilfley’s line of slurry and acidpumps to provide coverage of yourcentrifugal pump needs.

To contact the Wilfley office or agentnearest you, please contact A.R Wilfley& Sons directly.

P.O. Box 2330Denver, CO 80201 USA1-800-525-9930or 303-779-1777fax 303- 779-1277www.wilfley.com

Impeller pumpsliquid from suctionto discharge.

Expeller createspressure keepingliquid from shaft.

Wilfley Model S3 Features and Benefits

Extra wall thickness extends wearlife (1/4” corrosion allowance vs.1/8” with standard ANSI/ASME).

The large closed impellervanesprovide highly efficient pumpingand long wear life. The front pumpout vanes reduce circulation.

The Drylock® seal is a modularcartridge design, simplifying main-tenance. Slurry performance hasbeen improved by adding Wilfley’snew, patented Barrier Ring.

Optional expeller drain andcasing drain (not shown)available for both operationaland safety purpose.

The Wilfley expeller is a non-contactinghydrodynamic seal that provides long,trouble free life minimizing operating costsand downtime.

Shaft sleeveavailable ina wide varietyof materialsfor corrosionresistance.

Expeller performance hasbeen enhanced by addingfixed radial vanes on thecase plate which serve asself flushing vortex breakers.

Corrosion resistant non-metallic labyrinth oilseals isolate the bearings from contamination,improving life. Other seals are available.

Heavier shaft and short overhang resultin low L3/D4 ratio for minimum dynamicdeflection under heavy loads.

Bearings are designed for long life underheavy loads. Optional Extreme DutyBearings available to expand operatingrange and/or to increase L10 life.

Large oil sump capacity providesmaximum cooling and room forheating/cooling coils.

Frame foot eases handlingduring maintenance.

• A wide range of materials are available.• Guards (not shown) isolate all moving parts.

Wilfley DryLock® Seal

Labyrinth Seal(Standard)

Pump Running/Seal Open

Pump Off/ Seal Closed

Lube Seal(Option)

Symmetrical mechanismprovides smooth repeatableand predictable activation.

Optional expeller drain.

Positive seal atshutdown tightenswith pressure.

Friction free Barrier Ringisolates contaminatesfrom sliding mechanisms.

Multiple rotary andstationary sealmaterials available.

Modular cartridgedesign provides simplereplaceable parts.

Shaft sleeve designfor maximum shaftprotection.

Isolated spring forcrisp seal action.

Seal activation can easily bechanged to open and closeat different speeds simply byadding or subtracting balls.

Optional Flush/Lube Ports

Wilfley Model S3 Features and Benefits

DryLock®

The DryLock® uses the action ofcentrifugal force combined with thesmooth actuation of bearing balls toopen and close the seal. As the pumpstarts up, the expeller evacuates theliquid in the seal area. The balls of theDryLock® are forced outward andslide up a ramp in the ball housing.

The ramp forces the balls against theactuator plate and opens the sealfaces. Upon shut-down, the balls losetheir centrifugal force allowing thespring-loaded actuator plate to moveback into its closed position. The sealis then closed.

Actuator Assembly

40

30

20

10

0

Hea

d (M

eter

s)

1000 300200 400Flow (M3/HR)

1450 RPM

50

60

6 x 4-16

6 x 4-134 x 3-11

3 x 2-11

200

150

100

50

0

Hea

d (F

eet)

5000 15001000 2000Flow (USGPM)

1750 RPM

250

300

6 x 4-16

6 x 4-134 x 3-113 x 2-11

= Best Efficiency Point

200

150

100

50

0

Hea

d (F

eet)

Hea

d (M

eter

s)

5000 15001000 2000Flow (USGPM)

1140 341 227 455 Flow (M3/Hr)

VARIABLE SPEED

300

250

350

61

46

30

15

0

91

76

107

6 x 4-16

6 x 4-13

4 x 3-11

3 x 2-11

1900 RPM

2200 RPM

2400 RPM2400 RPM

= Best Efficiency Point

Dimensions

Dimensions shown are not for construction unless certified.Dimensions are shown in inches. Field shimming by customer may be required to meet dimensions. Baseplate dimensions are for fabricated steel.

Frame

1

2

Pump Size H HA HB HD HE HF HG HH HK CDHL CPHI HJ X D E

Frame

1

2

Pump Size HA HB HC HE HF HG HH HK CPHI HJ X D E

Direct Drive Motor Mount

Offset Overhead Motor Mount

IEC Max. MTR. Frame

3x2 - 11 34 35 36 4.25 13 26 4.5 1 5.5 5.5 5 20 33.12 9 10.3 15.7 5.9 326T 365U 200L

4x3 - 11 34 35 36 4.37 13 26 4.5 1 5.5 5.5 5 20 33.12 9 10.3 15.7 5.9 326T 365U 200L

6x4 - 13 41 38 44 6.08 14 30 4.5 1 7.5 7.25 7 25 41.47 10 13.3 19 7.5 365T 405U 250M

6x4 - 16 41 38 44 6.8 14 30 4.5 1 7.5 7.25 7 25 41.47 10 13.3 19 9 365T 405U 250M

3x2 - 11 28 75 32.5 4.25 13 65 4.5 1 5.5 5.5 5 33.12 10.3 15.7 5.9

4x3 - 11 28 75 32.5 4.37 13 65 4.5 1 5.5 5.5 5 33.12 10.3 15.7 5.9

6x4 - 13 30 95 40.5 6.08 14 81 4.5 1 7.5 7.25 7 41.47 13.3 19 7.5

6x4 - 16 30 95 40.5 6.2 14 81 4.5 1 7.5 7.25 7 41.47 13.3 19 9

HD

X

Bare Pump

Dimensions

Frame

1

2

Pump Size HA HB HC HD HE ØHF HG HH HKHI HJ ØHM CP

Dimensions shown are not for construction unless certified.Dimensions are shown in inches. Field shimming by customer may be required to meet dimensions. Baseplate dimensions are for fabricated steel.

EDHL

6x4 - 13 20.75 24.62 9 6.08 6.25 2.75 6 3.5 7.5 .438 16 3.5 .875 41.47 13.3 14.5 7.5

3x2 - 11 14 20 5.88 4.25 5.31 1.97 4.9 3 5.5 .68 13.8 2.8 .688 33.12 10.3 11.2 5.9

4x3 - 11 14 20 5.88 4.37 5.31 1.97 4.9 3 5.5 .68 13.8 2.8 .688 33.12 10.3 11.2 5.9

6x4 - 16 20.75 24.62 9 6.2 6.25 2.75 6 3.5 7.5 .438 16 3.5 .875 41.47 13.3 14.5 7.9

Model S3 Options and Engineering Specials

Features Options Engineered Specials

Bearings Extreme Duty BearingsFrame 1 - Inboard -Deep Groove Ball Inboard - Spherical Roller Bearing

Bearing, Single Row- Outboard - Angular Ball Outboard - Taper Roller Bearing

Bearing Double Row

Frame 2 - Inboard - Cylindrical Roller Inboard - Cylindrical Roller BearingBearing

- Outboard - Angular Ball Outboard - Taper Roller BearingBearing Double Row

Oil lubricated bearings Grease, oil mist

Non-metallic labyrinth bearing seal Magnetic and Metallic Bearing Seals

Frame and bearing carrier material: 316SS Corrosion resistant alloysDuctile iron

Frame with large sight glass Oil cooling provisions, constanton the right side when viewed level oilerfrom coupling end.

O-Ring material: Viton Kalrez®

Teflon® encapsulated Viton®

Aflas®

Wet end material: WCD4™, 1/2" NPT connection for case drain Special materialsMaxalloy 5™ Steam jackets

Connections for gauges

150 lbs. flat faced flanges 300 lbs flat faced flanges150 lbs & 300 lbs raised faced flanges

DryLock® seal Lube seal Packingwith Barrier Ring Mechanical sealLabyrinth spacer

Flush connections for seals Flushing and drain hardwareand expeller cavityExpeller cavity drain

Special Modifications

A.R. Wilfley & Sons is dedicated tomanufacturing pumps that maximizetheir full potential. Wilfley routinelyaccommodates customer requestsfor steam jackets, special paint,flush ports, special drain plugs andother modifications required to fitspecific needs.

Many applications require special motorand drive configurations, includingbaseplates and mounting brackets.Fabricated baseplates are standard.

Wilfley engineers assist in any specialconfigurations that the liquid andprocess require. Wilfley’s famous high-quality workmanship applies to allspecial designs to customers’ needs.

6x4 - 13 6x4 - 16

1000 1100

300

200

0.875

2.125

3

70 (2.756)

4.25

10

14.5

NUP317EC

5316A

NU317ECP

31316ADF

3x2 - 11 4x3 - 11

600 700

300

200

0.75

1.5

2.125

50 (1.9685)

2.835

8.73

10.57

313M

5312A

NU313EC

31312ADF

Construction Details

General

Pump weight (lbs)

Max. working*temperature (°F)

Max. workingpressure (psi)

Max. solids size

Shaft

Diameter atImpeller (in.)

Diameter at

Sleeve (in.)

Diameter atCoupling in.(mm)

Diameter betweenbearings (in.)

Shaft overhang (in.)

Bearing span (in.)

Bearings

Standard radialbearing

Standard thrust bearing

Extreme dutyradial bearing

Extreme duty thrust bearing

Frame One Frame Two

*Modified seal configurations are available for special pumping conditions up to 400º F.

Materials

11a3141517

6161a61b6262a62b62c677272a72b73757679

Wet End

CasingCap ScrewGasket, CasingImpellerCasing PlateExpeller

FrameBreatherDrain PlugShaftBearing, InboardBearing, OutboardLocknutOil Seal, InboardBearing CarrierO-ring, Bearing CarrierJam NutRetaining RingCap ScrewOil Seal, OutboardSight Glass

DryLock®

MaterialWCD4™

WCD4™

18-8Teflon®

WCD4™

WCD4™

WCD4™

DI**MS

SteelWMS*SteelSteelSteel

Teflon®

DI**Viton®

18-8Steel18-8

Teflon®

18-8

WCD4™

Maxalloy 5™

Maxalloy 5™

18-8Teflon®

Maxalloy 5™

Maxalloy 5™

Maxalloy 5™

DI**MS

SteelWMS*SteelSteelSteel

Teflon®

DI**Viton®

18-8Steel18-8

Teflon®

18-8

Maxalloy 5™

Power End

Seals

Materials

A.R. Wilfley & Sons manufactures S3centrifugal pumps in a variety of mate-rials including special combinationsof alloys.

Wilfley's engineering staff has theexpertise and experience to assist inmaterial selections. To help in thisservice, Wilfley maintains an extensivelibrary of pump services and corro-sion/abrasive data. Wilfley is continuallytesting the effects of both abrasionand corrosion on a wide variety ofmaterials as well as actively developingnew ones.

Wilfley’s in-house metallurgicaldepartment has developed uniquematerials to survive in the most hostileenvironments. These proprietary mate-rials were developed to extend the wearlife of parts in extreme corrosive andabrasive conditions.

CD4MCu and Maxalloy 5™ arecommonly used alloys. Wilfley’sfoundry and metallurgical staff havedeveloped proprietary processesenhancing these alloys for improvedpump performance.

WCD4TM

This derivative of CD4MCU providesoutstanding corrosion resistance and anincreased hardness to 320 – 350 Brinell.

Maxalloy 5TM

This is a machinable 27% ChromeAlloy Wilfley has developed withexceptional corrosion resistance andhardness over 600 Brinell.

Please consult Wilfley directly for anyspecial alloy combination requirements.

* WMS – hardened steel** DI – ductile iron

Item Number

ItemName

General Installation Recommendations

Choosing Pump Location

Locate the pump as close to the liquidsource as practical so the suction pipeis short and direct with a minimum ofelbows, fittings and valves.

Place the pump in a location so the unit isaccessible for inspection during operationas well as for maintenance operationsinvolving removal and disassembly.

Foundation

The foundation should be strong enoughto absorb any vibration and to form apermanent support for the baseplate.This is important in maintaining thealignment of the direct connected unit.Foundation bolts of the proper sizeshould be embedded in the concretelocated by the outline drawing.

Alignment

The pump and motor are aligned atthe factory before shipment. However,realignment is necessary after thecomplete unit has been installed.Guidelines for checking and aligningthe pump components may be foundin the Hydraulic Institute Standards.

Piping

Both suction and discharge pipesshould be supported independentlynear the pump so when the flangebolts are tightened no strain will betransmitted to the casing.

A check valve should be be installedin the discharge line to prevent fluidfrom flowing back through the pumpwhile it is shut down. Gate valvesshould be installed in both dischargeand suction lines to isolate the pumpduring maintenance.

Care must be taken in sizing and locatingsuction piping to prevent cavitation.

Ordering Information

Wilfley pumps are engineered to operatein compliance with your specifications.Careful evaluation of pumping conditionsis needed to provide accurate pumprecommendations and quotations.

This list will help establish specificpumping system conditions.

• Liquid

• Temperature

• Static Head

• Discharge Pipe Size

• Length, Discharge Pipe

• Discharge Pipe Fittings

• Equivalent Length Discharge Pipe

• Total Head

• Maximum Suction Pressure

• Minimum Suction Pressure

• Capacity

• Specific Gravity

• % Solids by Weight

• Mesh Analysis

• Viscosity

• NPSH Available