Marelli BB3 multistage horizontal split case side suction, side discharge process pump

Designed for processes engineers requiring reliable operation in the full range of high pressure services

The DVMX fully compliant API-610 11th Edition BB3 and ISO 13709 multi-stage process pump. Available in 4 – 14 stages. Horizontal axial split case running back to back impellers in heavy-duty double volute casings.

  • Flows to 2,640 gpm (600 m³/hr)
  • Heads to 4,260 ft (1,300 m)
  • Suction Pressure 232 psi (16 bar)
  • Temperature Range -40 to 410°F (-40 to 210°C)

Precision engineered API/ISO 13709 process pumps meeting rigorous engineering requirements for heavy duty, high temperature applications while receding the total life cycle cost and improving mean time between repairs. A perfect high-flow, high-head compliment to Sundyne low-flow, high-head integrally geared LMV and BMP centrifugal pumps.


  • Boiler feed water
  • High pressure water services
  • Crude oil pipeline
  • Crude products pipeline
  • Water injection
  • High pressure condensate
  • Propane transfer
  • Gasoline pipeline service
  • NGL pipeline
  • Mine dewatering
  • Water flood
  • HP amine circulation
  • High pressure refinery services
  • Process charge
  • De-scaling
  • CO2 injection

Proven to be reliable, efficient and long-lasting, Marelli BB3 pumps provide a number of operational benefits for process engineers and plant operators:

  • API 610 11th Edition/ISO 13709 full compliance for reliability and accountability
  • Suitable with 60 Hz and 50 kW motors
  • Near-centerline mounted pump casing maintains alignment during operation at elevated temperatures
  • Opposed impeller design for balanced axial thrust for optimal seal and bearing life
  • Single suction closed impeller, with large suction eye for low NPSH requirements
  • Side-side nozzle arrangement. Nozzles are cast integrally with lower casing half for easy disassembly without disturbing auxiliary pipe work
  • Balancing line design for equalizing pressures in seal chambers for optimal seal life
  • Highly maintianable and easily replaceable wear rings to reduce overall life cycle costs
  • Ring oil lubrication system that incorporates a constant level oiler and sight glass
  • Dual volute for balancing radial thrust at each stage and for optimizing seal and bearing life
  • Cartridge type mechanical seals for easy assemble and proper installation
  • Dynamic flows analysis assures stable performance and high efficiency levels, with high mechanical reliability
  • Seal chamber in compliance with API 682 3rd Edition and ISO 21049, ready to accommodate single, tandem or double mechanical seals
  • Casings supplied under ASME B16.5 class 600, 900 and 1500
  • Cap nuts are arranged on the top half casing parting flange, allowing easy casing removal for rotor inspection and ease of maintenance
  • Extra large shaft diameter design to minimize deflection in operation
  • Choice of multiple impellers in each hydraulic pump casing for optimum efficiency over a wide operating range
  • A variety of instrumentation options are available for monitoring all key operating parameters (temperature, pressure, vibrations and more)
  • Socket welded, flanged drains and vents as standard (Gussets and bracing are available)
  • Labyrinth bearing seals, deflector, to avoid external contamination and maximizing seal and lubrication life

US 60 Hz

  • Heads to                                                  4,260 ft
  • Flows to                                                   2,640 gpm
  • Standards                                               API 610 OH2
  • Maximum Motor Power                           2500 HP
  • Temperature Range                                -40 to 410°F
  • Maximum Case Working Pressure          1,740 psi
  • Maximum Suction Pressure                     232 psi
  • Differential Head                                      3,937 ft
  • Maximum Viscosity                                 Consult Factory
  • Mounting Configuration                           Horizontal-Side-Side
  • Seal Configurations                                 API 682

Metric 50 Hz

  • Heads to                                                  1,300 m
  • Flows to                                                   600 m3/hr
  • Standards                                                ISO 13709
  • Maximum Motor Power                           2,000 kW
  • Temperature Range                                -40 to 210°C
  • Maximum Case Working Pressure         120 bar
  • Maximum Suction Pressure                     16 bar
  • Differential Head                                      1,200 m
  • Maximum Viscosity                                 Consult factory
  • Mounting Configuration                           Horizontal-Side-Side
  • Seal Configurations                                 API 682
Part S1 S5 S6 S8 C6 A8 D1
Pressure Casing Carbon Steel (A216 WCB) 12% CHR 316 AUS Duplex
Impeller Cast Iron Carbon Steel 12% CHR 316 AUS 12% CHR 316 AUS Duplex
Wear Rings Cast Iron 12% CHR Hardened Hard-faced 316 AUS 12% CHR Hardened Hard-faced 316 AUS Hard-faced Duplex
Shaft Carbon Steel AISI 4140 316 AUS 12% CHR 316 AUS Duplex
Bearing Housing Carbon Steel (A216 WCB)
Base Gasket AUS, Spiral Wound 316 AUS Spiral Wound AUS, Spiral Wound 316 AUS, Spiral Wound Duplex SS Spiral Wound