Marelli BB2 radially split, centerline mounted, double volute, between-bearings centrifugal process pump

Designed for processes engineers requiring reliable operation in heavy-duty elevated temperature process services

The Marelli model KSMK, API 610 BB2 and ISO 13709 radially split, centerline mounted, double volute, between-bearings centrifugal process pump. It is available in one or two stage configurations. These pumps feature a double suction impeller. In-line and side by side flange configurations are available.

  • Flows to 13,208 gpm (2,400 m³/hr)
  • Heads to 1,640 ft (350 m)
  • Suction Pressure 290 psi (20 bar)
  • Temperature Range -22 to 752°F (-30 to 400°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.

APPLICATIONS

  • Toppings
  • Gas condensate
  • HDS
  • Platforming
  • Thermal solar
  • crude oil pipelines
  • Gas pipelines
  • Charge pumps
  • Low shear applications

Proven to be reliable, efficient and long-lasting, Marelli BB2 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
  • Choice of multiple impellers in each hydraulic pump casing for maximum efficiency over a wide operating range
  • Centerline mounted pump casing maintains alignment during operation at elevated temperatures
  • Low suction specific speed and low NPSH characteristics, with a wide choice of impellers for optimum efficiency over a large operating range
  • Finned bearing housing to provide maximum heat dissipation under API 610 compliance
  • Deflection system with fins to improve cooling
  • Labyrinth bearing seals to avoid external contamination and maximize seal and lubrication life
  • Highly maintainable and replaceable wear rings to reduce overall life cycle costs
  • Mechanical seal chamber suitable for cartridges defined under API 682 3rd Edition
  • Socket welded flanged drains and vents as standard. Gussets and bracing also available
  • A variety of instrumentation options are available for monitoring all key operating parameters (temperature, pressure, vibrations and more)

US 60 Hz

  • Heads to                                                  1,640 ft
  • Flows to                                                  13,208 gpm
  • Standards                                               API 610 BB2
  • Maximum Motor Power                           2,000 HP
  • Temperature Range                                -22 to 752°F
  • Maximum Case Working Pressure          870 psi
  • Maximum Suction Pressure                     290 psi
  • Differential Head                                      1,640 ft
  • Maximum Viscosity                                  Consult Factory
  • Mounting Configuration       Horizontal/Top-Top (optional side-side)
  • Seal Configurations                                 API 682

Metric 50 Hz

  • Heads to                                                  350 m
  • Flows to                                                   2,400 m3/hr
  • Standards                                                ISO 13709
  • Maximum Motor Power                           1,500 kW
  • Temperature Range                                -30 to 400°C
  • Maximum Case Working Pressure         60 bar
  • Maximum Suction Pressure                     20 bar
  • Differential Head                                      500 m
  • Maximum Viscosity                                 Consult factory
  • Mounting Configuration   Horizontal/Top-Top (optional 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