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  • DurcoMark III ANSI

    Process Pumps

    ALLOY PUMPS ANSI Standard Lo-Flo Sealmatic Unitized Self-Priming Recessed Impeller

    Bulletin P-10-500c (E)

    Rotating Equipment Division

    MKIII SALES BULL.a - 1 6/3/02 1:45 PM Page 2 Dan K. Snelson Scratch Too:Mark III:

  • Pumps delivered worldwide are manufactured in Flowservefacilities, certified either to ISO 9001 or to 9002.

    Quality System Certificate

    Rotating Equipment Division

    Mark IIIANSI Standard

    Pump

    Features/Enhancements

    Heavy-duty chemical service pumps are world renowned for their reliability and durability.

    Improved pump reliability andextended MTBPM are achieved withexclusive features like the uniquereverse vane impeller, SealSentryseal chambers and many othertechnological advancements.

    Mark III Standard/4-5Performance Curves/6Interchangeability/7PumpSel Durco Pump Selection Guide/7

    Power Ends/8-9Seal Chambers/10-11Impellers/12-13Shaft Design/14Baseplates/15-17C-Flange andOther Options/18-19Safety and InspectionOptions/20-21

    Mark IIILo-FloPump

    Radial vane impeller with circularconcentric casing is specificallydesigned for high head/low flowapplications.

    Lo-Flo/22-23

    Durco Mark IIIANSI Process

    Pumps

    MKIII SALES BULL.a - 1 6/3/02 1:45 PM Page 3 Dan K. Snelson Scratch Too:Mark III:

  • Rotating Equipment Division

    Mark IIISealmatic

    Pump

    Mark IIISelf-Priming

    Pump

    Dynamically sealed pump eliminates the need for conventional mechanical seals.

    Sits high and dry, reduces costs of vertical pump options andsimplifies maintenance.

    In-Line High Silicon Iron Chemstar ISO Standard Guardian

    Chemstar MD PolyChem Power Monitor Genuine Durco pump parts Durco alloy materials

    Sealmatic/24-25

    Pumps and PrimingTanks/26-27

    Other Durco Pumps andGeneral Information/30-35

    Vortex action assures trouble-freepumping of large diameter solidsand slurry services. Also used toprocess shear sensitive products.

    Recessed Impeller/28-29

    3

    Mark IIIRecessed Impeller

    Pump

    Other Durco Pumps/General Information

    MKIII SALES BULL.a - 1 6/3/02 1:45 PM Page 4 Dan K. Snelson Scratch Too:Mark III:

  • Rotating Equipment Division

    4

    Durco Mark IIIANSI Standard

    Fastest MaintenanceTurnaround Time Micrometer type shaft and

    impeller adjustment accuratelysets impeller clearance to rearcover in 20 secondsin theshop or field

    Mechanical seals and all criticalsettings can be accurately set inthe shop (See page 9)

    A Choice of Power Ends Standard Mark IIIA power end

    with double lip oil seals and topvent/breather or

    ANSI 3A power end (shownhere) featuring Inpro VBX bearingisolators and up to a three-yearperformance guarantee(See page 8)

    Truest Running ANSI Pump Four precision machined metal-

    to-metal fit locations. (See thru .) Other manufacturersoffer only two or threemachined fits

    Precision machined metal-to-metal bearing carrier reducesstack-ups to improve shaft concentricity

    Superior to jackscrew designswhich can cause cocking

    Extends bearing and mechanicalseal life

    1

    2

    Recognized worldwide as thepremier name in ANSI chemicalprocess pumps

    The advanced design andprecision manufacture of therugged, heavy-duty Mark IIIchemical service pump signifi-cantly enhance bearing and seal life.

    Flowserve is committed tohelping users maximize meantime between planned main-tenance (MTBPM).

    The unique features andenhancements of Durco pumpsprovide significant performancebenefits for pump users.

    MKIII SALES BULL.a - 1 6/3/02 1:45 PM Page 5 Dan K. Snelson Scratch Too:Mark III:

  • Rotating Equipment Division

    5

    MARK III ANSI STANDARD

    Reverse Vane ImpellerThe only ANSI pump impellerdesign that offers repeatablepump performance throughoutthe life of the pump.

    Front Vane Open Style Impelleris also available as an option. (See pages 12 & 13)

    SealSentry Family of SealChambers Featuring UniqueFlow ModifiersThe Vaaler Award winning FMdesign provides advanced self-flushing ability to: Extend mechanical seal life Utilize less expensive seal and

    flush plan options in most cases Improve pump reliability

    (See pages 10 & 11)

    The Mark III ANSI Standardprocess pump covers a broadhydraulic range.

    Thirty sizes Seven (7) Group I Sixteen (16) Group II Seven (7) Group IIICapacities 60 Hz To 7400 gpm (1680 m3/h) 50 Hz To 6120 gpm (1390 m3/h)Heads 60 Hz To 985 ft (300 m) 50 Hz To 655 ft (200 m)

    (See pages 6-7 for performance data and component interchangeability.)

    Enhancements have been developed to offer superior performance and reliability. (See pages 9 thru 21)An important element ofFlowserve quality is a full menuof superior materials cast to thehighest quality standards.(See page 7)

    3

    4

    MKIII SALES BULL.a - 1 6/3/02 1:46 PM Page 6 Dan K. Snelson Scratch Too:Mark III:

  • m80

    60

    40

    20

    0

    ft300

    250

    200

    150

    100

    50

    0

    TDH

    17

    50 R

    PM (6

    0 Hz

    )

    ft200

    150

    100

    50

    0

    m60

    50

    40

    30

    20

    10

    0

    TDH

    14

    50 R

    PM (5

    0 Hz

    )

    FLOW 1450 RPM (50 Hz)0 50 100 150 190 500 800 1100 1400 m3/h

    0 200 400 600 800 2300 3800 5300 6800 gpm

    Mark III Standard Group I11/2x1LF-4

    11/2x1-6

    3x11/2-6

    3x2-6

    11/2x1LF-8

    11/2x1-8

    3x11/2-8

    Mark III Standard Group II3x2-84x3-82x1LF-102x1-10A

    3x11/2-10A3x2-10A4x3-104x3-10H6x4-106x4-10H

    3x11/2LF-133x11/2-133x2-134x3-134x3-13HH6x4-13A

    Mark III Standard Group III8x6-14A

    10x8-14

    6x4-16

    8x6-16A

    10x8-16

    10x8-16H

    10x8-17*

    *Max. speed 1450 RPM

    0 200 400 600 800 1000 2800 4600 6400 8200 gpm

    0 50 100 150 200 227 400 800 1200 1600 m3/hFLOW 1750 RPM (60 Hz)

    2427 25 28

    Rotating Equipment Division

    Mark IIIPerformance Curves

    6

    1234567

    891011121314151617181920212223

    24252627282930

    1

    2 3 4

    9876

    5

    10

    11 12 13

    14

    1516

    17

    21

    22

    23

    26

    29

    19 20

    18 SCA

    LE

    CHAN

    GE

    FLOW 2900 RPM (50 Hz)0 20 40 60 80 100 120 140 160 180 200 220 240 260 m3/h

    0 200 400 600 800 1000 gpmm

    320

    280

    240

    200

    160

    120

    80

    40

    0

    ft1120

    1040

    960

    880

    800

    720

    640

    560

    480

    400

    320

    240

    160

    80

    0

    TDH

    35

    00 R

    PM (6

    0 Hz

    )

    ft

    750

    600

    450

    300

    150

    0

    m

    200

    150

    100

    50

    0TD

    H

    2900

    RPM

    (50

    Hz)

    0 200 400 600 800 1000 1200 1400 gpm

    0 50 100 150 200 250 300 m3/hFLOW 3500 RPM (60 Hz)

    1

    23 4

    987

    6

    5

    10

    1112

    1314

    16

    21

    19

    20

    18

    MKIII SALES BULL.a - 1 6/3/02 1:46 PM Page 7 Dan K. Snelson Scratch Too:Mark III:

  • The thirty pumps in the Mark IIIfamily are built with only threedifferent power frames.

    MARK III Standard Group II

    POW

    ER E

    ND

    REAR

    COV

    ERS

    ADAP

    TERS

    REVE

    RSE

    VANE

    IMPE

    LLER

    S

    FRON

    T V

    ANE

    OPEN

    STY

    LEIM

    PELL

    ERS

    CASI

    NGS

    3X2-8

    4X3-8

    2X1LF-10

    2X1-10A

    3X11/2-10A

    3X2-10A

    4X3-10

    4X3-10H

    6X4-10

    6X4-10H

    3X11/2LF-13

    3X11/2-13

    3X2-13

    4X3-13

    4X3-13HH

    6X4-13A

    OR

    Mark III Standard Group II

    Rotating Equipment Division

    Durco Mark IIIInterchangeability

    7

    MARK III ANSI STANDARD

    POW

    ER E

    ND

    REAR

    COV

    ERS

    REVE

    RSE

    VANE

    IMPE

    LLER

    S

    FRON

    T V

    ANE

    OPEN

    STY

    LEIM

    PELL

    ERS

    CASI

    NGS

    11/2X1LF-4

    11/2X1-6

    3X11/2-6

    3X2-6

    11/2X1LF-8

    11/2X1-8

    3X11/2-8

    OR

    POW

    ER E

    ND

    REAR

    COV

    ERS

    ADAP

    TERS

    REVE

    RSE

    VANE

    IMPE

    LLER

    S

    FRON

    T V

    ANE

    OPEN

    STY

    LEIM

    PELL

    ERS

    CASI

    NGS

    8X6-14A

    10X8-14

    6X4-16

    8X6-16A

    10X8-16

    10X8-16H

    10X8-17

    OR

    Mark III Standard Group III

    Mark III Standard Group I

    SealSentry provides a choice offive different seal chamberoptions to best meet yourspecific needs.

    PumpSelThis accurate pump selectionsoftware program is availablefrom your local sales represen-tative. This software assurescorrect sizing and selection ofpumps and magnetic couplingsto best suit your processapplication needs.

    PumpSel also aids in checkingthe suitability of existing pumpswhen process requirementschange.

    MKIII SALES BULL.a - 1 6/3/02 1:46 PM Page 8 Dan K. Snelson Scratch Too:Mark III:

  • Flowserve offers a choice of twopower ends: the standard MarkIIIA; or the optional ANSI 3A(shown below).

    Standard Mark IIIA power endsfeature: Double row angular contact

    outboard/single row, deepgroove inboard bearings forexcellent axial and radial loadsupport

    Double lip oil seals Top mounted vent and oil filler Trico oiler Large one inch (25 mm)

    diameter reflective sight glass Micrometer adjustment Optional oil slinger

    Rotating Equipment