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Axially Split Multistage Between-Bearings
Process Pumps, type BB3 (API 610)
Pump series: AMG, NPS, 2NPS
DESCRIPTION
The BB3 type represent horizontally mounted, axially split, multistage, between-bearings pumps with double volute casing, designed in compliance with API 610 standard of the 11th edition.
APPLICATION
- Secondary processing of crude oil and petroleum products
- End products handling at refineries
- Various processes at petrochemical and gas processing plants
TECHNICAL DATA
- Capacity range: 20 - 3700 m³/h
- Pressure head range: 150 - 1900 m/6200 feet (2800 m for high-speed arrangement)
- Pressure design: up to 275 bar (4000 psi)
- Rotation speed: up to 4500 rpm
- Pumped media temperature: - 80 … + 250 °C (480 °F)
- Specific gravity: over 0.70
DESIGN FEATURES AND ADVANTAGES
- Excellent suction capability due to double-suction first stage NPSH impeller.
- Back-to-back arranged impellers providing rotor axial balance and lowered wear of rotating elements.
- Symmetrical casing parts and centreline-located feet ensure uniform temperature expansion of the casing and stability in with high-temperature liquids.
- Specially designed pump stages, wear rings and bushings provide uniform pressure drop per mm throughout the pump width for uniform distribution of normal wear of the elements for increased reliability.
- High-strength casing of a compact size with single-row easy accessible bolting simplifies the maintenance operations.
- Extra heavy-duty rigid shaft with minimum deflection in operation to extend lifetime of bearings and mechanical seals.
- Various applicable options of the bearings solutions for high-pressure, high-capacity, and high-temperature applications.
SHAFT SEAL
- Application of a single and double mechanical seal of a standard cartridge type design is equally possible from John Crane, EagleBurgmann, Aesseal, TREM
SCOPE OF SUPPLY
- Pump according to API 610
- Drive: electric motor from SIEMENS, ABB, ELSIB and other manufacturers
- Bearings from the leading manufacturers
- Rotation speed: up to 4500 rpm
- Sensors, auxiliary systems
- Optional: fluid couplings and frequency invertors from Voith, ABB, Siemens and other manufacturers
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