KSB RPH – OH2 process pump to API 610

Single-stage process pumps of the RPH series to API 610,11th edition are employed in refineries, the chemical industry, petrochemical applications, and power stations.
They handle fluids reliably and efficiently.

The RPH process pump for the chemical and petrochemical industries is a horizontal, radially split volute casing pump designed for flow rates of up to 4800 cubic meters per hour and pressures of up to 110 bar. It meets all requirements of API 610,11th edition and ISO 13709 (heavy duty).

Benefit :

  • Low maintenance costs :
    • The selection of a balancing system for the specific duty point markedly reduces axial forces and extends the bearing life.
    • The double volute (DN 80 and above) reduces radial thrust and prevents shaft deflection.
    • This reduces the load on bearings and mechanical seals.
    • Mechanical seals to ISO 24109 / API 682 in cartridge design are easy to install/remove for maintenance.

  • Low operating costs :
    • A choice of more than 70 hydraulic systems enables optimum pump selection to API with higher efficiencies.

  • The long service life of the mechanical seal and bearings :
    • The maximum permissible shaft diameter allowed by API 610 ensures little shaft deflection and vibrations.

  • High flexibility :
    • Pump flanges are available for all common pipelines, meeting all standards up to PN 100 (ASME Class 600)

  • Reliable and robust :
    • Heavy-duty 40° angular contact thrust bearings exceed API requirements.
    • Oil bath or oil mist lubrication
    • High efficiency, low NPSH values

  • Economical :
    • Steel bearing bracket with integrated cooling fins eliminates the need for a separate cooling circuit. Together with the optional fan impeller, it protects the pump from overheating up to a fluid temperature of 315 °C.

Application: Industrial, Energy, Oil and gas, petrochemical, and power plants

Specification :

Pump size

DN 25-400

Max. flow rate

4,800 m3/h / 21,134 US gpm

Max. head

285 m / 935 ft

Max. discharge pressure

51 bar / 740 psi

Max. fluid temperature

-70 ˚C to +450 ˚C / -94 ˚F to +842 ˚F

Max. speed

3,500 min-1


S1, S5, S6, S8, C6, A8, D1, D2 and special materials

For further please contact us, marketing@wmablog.com