API BB5 Multistage Feed Water Pump

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API BB5 Multistage Feed Water Pump



Double-casing Multistage Pump

Horizontal, multi-stages, radially split or axially split barral type centerline mounted centrifugal pumps. The series pumps compile with API 610 standard BB5 type.

Pumps are designed for high temperature and high pressure working conditions, especially for conditions intended to suffering thermal shock. The pump operates
more reliably when pumping flammable or hazardous liquid with higher pressure.

· Refineries
· Power plant
· Petrochemical plants
· Coal processing
· Gas processing
· Cryogenics engineering
· Offshore industry

Carbon steel, chrome steel, or Cr-Ni-Mo stainless steel. Standard API610 material classes: S-5, S-6, C-6, A-7, A-8, D-1, D-2.Other choices can be selected when needed.

Design Features

Hydraulic Models: Each pump size have two or three types of hydraulic models, for different operating conditions the best efficient hydraulic model can be selected.

Balancing Parts: The balancing drum balances most of the hydraulic axial forces. The residual thrust is absorbed by thrust bearing.

Barrel Casing: Double casing, back pulling out construction, and the inner casing are section-ring casings or axially split casings. The barrel casing centerline mounted
with set pin hole in the bottom. Ductile cast should be used when pressure is greater than 15MPa. with forced oil circulation.

Support Structures: Heavy duty shaft design and bearings support having heavy duty carrying capability, roller bearing or  sleeve bearings with oil ring lubricated, water cooled, or sliding bearings Nozzle: The suction and discharge nozzied with same pressure grade are vertically arranged. Allowable nozzle loadings compile with API 610.

Shaft Sealing: The shaft sealing chamber compiles with API 682 specifications; single, double or tandem cartridge type mechanical seals are avaliable. The pressure in seal chamber is only the same as suction.

Nozzle sizes                     DN: 50~400mm
Capacities                        Q: 6720m3/h
Head                                 H: ~2500m
Operating pressure          P: ~26.0MPa
Operating temperature     T:-80 ~450ºC



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