RPHb

Summary

Product identification

The RPHb is a single-suction, two-stage heavy-duty BB2 process pump designed to API 610 / ISO 13709 standards.

Applications

• Refineries
• Petrochemical and chemical industries
• Onshore and offshore processes

Features

• Robust design for longer service life
  • Process pump in heavy-duty design to API 610
  • Optimised pressure boundary and hydraulic system with reinforced optimised shaft
• Wide range of variants for a broad application range and optimum adaptation to the system
  • Numerous flange designs
  • Large choice of materials
  • Coolable/heatable seal housing
  • Various bearing lubrication variants
• Long service life and high reliability of the bearings
  • Heavy-duty paired 40° angular contact ball bearings
  • Diffuser design and impellers in back-to-back arrangement
  • Standard version with oil ring lubrication and labyrinth seals
  • Version with hydrodynamic bearings for higher energy density
• Lower operating costs and higher system availability
  • Comprehensive hydraulic selection chart for optimum selection
  • Better efficiencies and NPSH values than OH2 pumps
  • No need for a separate cooling circuit; integrated cooling fins and optional fan impeller ensure optimum cooling of the bearing brackets.
• Ease of service
  • Easy to monitor and service due to top-top flange arrangement
  • Suction-side casing cover simplifies rotor removal.
  • Straightforward servicing due to mechanical seals to API 682 (cartridge design)
  • Replaceable casing and impeller wear rings
  • Modular design system reduces spare parts stock.

Operating limits

• 50 Hz
  • Max. flow rate: 2100 m³/h / 9246 US gpm
  • Max. head: 680 m / 2231 ft
• 60 Hz
  • Max. flow rate: 1900 m³/h / 8365 US gpm
  • Max. head: 800 m / 2625 ft
• Max. temperature: -80 °C to +450 °C / -112 °F to 842 °F
• Max. pressure: 100 bar / 1450 psi
• Nominal diameter: 80-300 mm / 3-12 in
• Materials: S5, S6, S8, C6, A8, D1, D2 and special materials

Disclaimer: This summary is based on extracted text and may not include all figures, footnotes, or the latest revisions from the official PDF. Contractual data must always match the OEM PDF revision used on the project.

Official datasheet (PDF)

Lenntech datasheet mirror