BB 1
Axially split 1 and 2 stage between-bearings pumps shall be designated pump type BB 1.
BB Pumps
The Between Bearing pumps are designed for heavy duty, high pressure and high temperature applications in industrial and HPI services. Applications range from light hydrocarbons at low temperatures, to corrosive fluids, coker furnace charge, vacuum bottoms and other services at high temperatures.
Features
- Refinery
- Petrochemical plants
- Gas processing
- Coal processing
- Offshore installation
BB 2
Radially split 1 and 2 stage between-bearings pumps shall be designated pump type BB 2.
BB 3
Axially split multistage between-bearings pumps are referred to as BB 3 type pumps.
BB 4
Single-casing radially split multistage between-bearings pumps are referred to as BB 4 type pumps. These pumps are also called ring-section pumps, segmental-ring pumps or tie-rod pumps.
These pumps have a potential leakage path between each segment. (This type does not meet all the requirements of this International Standard)
BB 5
Double-casing radially split multistage between-bearings pumps (barrel pumps) are referred to as BB 5 type pumps.