BF and BFD Between Bearings, Axially Split

Multistage PumpsISO 13709/API 610 (BB1 and BB3)

Experience In Motion

2The BF and BFD are horizontal, axially split case, multistage centrifugal pumps adhering to ISO 13709/API 610 (BB1 and BB3) standards. Designed for medium to high flows, high heads and maximum efficiency, the single-suction BF and double-suction BFD are well suited for pipeline, refinery and waterflood services. Both configurations are available in 2, 3 and 4 stage designs.

Operating Parameters Flows to 4300 m3/h (18 800 gpm) Heads to 2130 m (6000 ft) Pressures to 230 bar (3335 psi) Temperatures to 200C (400F)

Features and BenefitsSuction and Discharge Nozzles are integrally cast with the lower casing, allowing disassembly and inspection of the rotating assembly without disturbing the piping.

Double or Staggered Single Volute Design balances radial loads on the shaft, minimizing shaft deflection.

Near-centerline Mounting of casing feet ensures optimal alignment and performance when operating at elevated temperatures.

Long-radius Crossovers minimize flow losses between stages, helping to enable high efficiencies.

Cap Nuts are arranged on the top half casing parting flange, allowing easy casing removal for rotor inspection and maintenance.

Shaft Sleeves are threaded against rotation and locked against opposite rotation with a set screw.

Replaceable Casing and Impeller Wear Rings control interstage leakage and provide hydraulic stability.

Complementary Pump Designs DVSH ISO 13709/API 610 (BB1) axially split,

single-stage process pump UZDL ISO 13709/API 610 (BB1) axially split,

two-stage process pump DMX ISO 13709/API 610 (BB3) axially split,

multistage process pump

BF and BFDBetween Bearings, Axially Split Multistage Pumps

DVSH

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Bearing Designs to Suit Any Application The BF and BFD are offered with a variety of bearing arrangements to meet application requirements.

Standard-duty Radial: Double-row, self-aligning ball bearing Thrust: Double-row, angular-contact ball bearings mounted back-to-back

Medium-duty Radial: Split sleeve, plain-surface bearings Thrust: Double-row, angular-contact ball bearings mounted back-to-back

Heavy-duty Radial: Split sleeve, plain-surface bearings Thrust: Tilting pad thrust bearings

Bearing LubricationStandard lubrication is via oil ring, which prolongs bearing life by ensuring oil penetrates the bearings without foaming. Force-feed lubrication is required for tilting pad bearings.

Back-to-Back Impeller DesignSingle-suction impellers (BF) are mounted back-to-back in pairs, providing balanced axial loads over the entire operating range. Locating rings and interference fits assure positive axial positioning. Double-suction impellers (BFD) may be furnished to lower NPSHR and minimize cavitation.

Range Chart

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flowserve.com

USA and CanadaFlowserve Corporation5215 North OConnor Blvd. Suite 2300Irving, Texas 75039-5421 USATelephone: +1 937 890 5839

Europe, Middle East, Africa Flowserve CorporationParallelweg 13 4878 AH Etten-LeurThe NetherlandsTelephone: +31 76 502 8100

Latin America Flowserve Corporation Martn Rodriguez 4460 B1644CGN-Victoria-San Fernando Buenos Aires, Argentina Telephone: +54 11 4006 8700 Telefax: +54 11 4714 1610

Asia Pacific Flowserve Pte. Ltd.10 Tuas Loop Singapore 637345 Telephone: +65 6771 0600Telefax: +65 6862 2329

To find your local Flowserve representative:

For more information about Flowserve Corporation,visit www.flowserve.com or call +1 937 890 5839.

Bulletin PS-30-16 (E) April 2013. 2013 Flowserve Corporation