SIHImulti Pump MSL-MSM

SIHImulti Pump MSL-MSM are horizontal multistage centrifugal pumps of ring-section design, which meet the technical requirements of ISO 5199 / EN 25199, which defines bearing and seal life. The advanced modular design reduces the number of parts whilst maximising interchangeability. Optimal selection of impeller diameter and diffuser size for each ensures that the pump closely matches the required duty conditions.

•  and much more …

Technical Data:

• Flowrate max. 450 m³/h
• Head max. 630 m
• Speed max. 3600 rpm
• Temperature -10 to +180°C *
• Pressure Rating max. 63 bar
• Shaft seal
  •  packed gland
  •  mechanical seal
• Direction of rotation counterclockwise, when viewed from discharge side

* 200°C as special design, for example, pump feet are mounted concentrically in accordance with ISO 9905. This minimises stresses on the pump due to thermal growth.

Why use a SIHI Pump? 

Reduced life-cycle cost – Enhanced efficiency with the balance drum system – Only one shaft seal – Lower power consumption – High-reliability

Ease of maintenance – Simple dismantling and assembly

Minimised wear – Reduced usage of spare parts

Construction of Pump: SIHImulti Pump MSL-MSM 

Different hydraulic impeller and diffuser sizes can be installed in a standardised casing, therefore enabling the pump to be designed exactly for the duty required.

The first stage of each pump is equipped with a suction impeller for low NPSH requirement. This eliminates cavitation damage.

Axial thrust is hydraulically balanced by a patented balance drum system with a self-adjusting throttling device.

Residual thrust is absorbed by a generously-sized angular-contact ball bearing.

The balancing line is returned to the suction casing or in the upstream vessel. Seal is subject to suction pressure only, therefore, increasing seal lifetime. Standard suction casing construction is with axial or radial inlet nozzles. This choice is to suit the pipework configuration or preference.

A mechanical shaft seal is located on the drive side only. It can consist of a packed gland (cooled or uncooled, with external flushing connection), (cooled or uncooled) single mechanical seal or (uncooled) double mechanical seal. The pump rotor is supported on the drive side by

The pump rotor is supported on the drive side by grease lubricated anti-friction bearings and on the suction side by a self-adjusting sleeve bearing lubricated by the pumped liquid.