OMEL - HDRP/D BB2 Centrifugal Pump


Centrifugal pumps API HDRP/D (BB2) are two stages process pumps designed for heavy duty service and for applications of high pressure and high temperature with extremely low capacities. They comply with API 610 Standards (last edition) and have two “low-flow” type rotors mounted between bearings (BB2) “center-line”.

Applications vary from water, light hydrocarbons at low temperatures, corrosive fluids and other services at high temperatures or not at environments like:

  • Refinery
  • Petrochemical installations
  • Gas processing
  • Offshore installations

Design Characteristics

Pumps HDRPD (BB2) are horizontal centrifugal pumps with two stages, radially splitand with rotors between bearings (BB2) that comply to API 610 standards (last edition).
The two rotors (semi-open radial) are low-flow type and are placed in such way to minimize axial and radial loads. The typical advantages of single stage pumps (HDRP) such as high stability at low flow rate and low NPSHr are maintained.

OMEL - HDRP/D BB2 Centrifugal Pump

Sealing box in compliance with API 682. Seals of cartridge type, single or double (pressurized or not) may be used as required by the specific application. The sealing box has its pressure equalized through the balancing line, which in this configuration allows same class seals, at each side.

Shaft design allow operation with critical velocity above 120% of the designed rotation and shaft deflections at the sealing faces region are within limits, as required by API 610.

Outros destaques construtivos importantes

  • Pumps do not have wear rings and have adequate axial clearance to allow operation in their operational temperature with no risks of seizure;
  • Center-line housing configuration to minimize misalignment thermally induced.;
  • Suction and Discharge Nozzles complies with ANSI-600 PSI and are set with top/top orientation;
  • Rotors are dynamically balanced, keyed and positively locked on the shaft;
  • Base plates comply with API 610.


Pumps may be produced according to material classes S-5, S-6, S-8, C-6, A-7, A-8, D-1, D-2 as indicated in norm API 610 (last edition); for special materials upon request.


Working limits

Capacity 0,3 a 24 m3/h
Height ≤ 630 mca
Pressure (max.) 70 kgf/cm2
Temperature (max.) 400 ºC

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