Main design features

• Closed type impeller with front and rear wear rings as well as balancing holes, to minimise the axial thrust.
• Large eye single suction 1st. stage impeller to meet low NPSH requirements.
• Pump shaft fully machined to respect the more restrictive run-out API limits.
• As a standard, the rotor axial thrust is supported by a duplex oil lubricated ball angular contact type bearings.
• Discharge column, line shaft and support column may consist of multiple sections, depending upon the pump setting. Discharge column mounted with a sliding fit through the sole plate to account for thermal expansions.
• Renewable intermediate bushings, lubricated from and external source or by the same pumped fluid, are provided in correspondence of all column sections.
• Deep stuffing boxes, designed in accordance to API 682 Std., suitable to accept any type of mechanical or packing seal.
• Labyrinths and deflectors at either bearing housing to maximise protection against dirt.

Technical data

• Capacities:  up to 5000 m3/h (20000 gpm)
• Heads:  up to 200 m (700 feet)
• Temperatures:  from -30°C (-20°F) to 450°C (850°F)
• Design working pressure:  up to 30 barg (400 Psig)
• Rotational speed:  up to 3600 rpm

Design variations

In addition, the following pump designs can be provided:

• Inducer for extremely low NPSH requirements.
• Semi-open impeller with wear plates fitted on suction casing.
• Full jacketed body.
• Additional rigid coupling to facilitate mechanical seal maintenance activities.
• Rectangular or circular soleplates.
• Suction strainer.
• Anti reverse rotation device.
• Air fan or water cooling system provided on bearing bracket and /or mechanical seal when required by hot temperature applications.
• Special bearing isolators at either bearing housing ends.
• Grease lubrication
• Oil mist lubrication (pure or purge).
• Temperature and/or vibration detection and monitoring equipment.

Applications

• Acid Transfer
• Dry Pit
• Evaporators
• General Purpose
• Hydrocarbon Processing
• Petrochemical Processing
• Plating
• Recycling Services
• Solvents
• Storm Water
• Sulphur
• Sump Service
• Waste Processing
• Water
• Water Treatment
• Wet Pit