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 or double suction 1st. stage impeller to meet low NPSH requirements.
- Number of stages rangeable from 1 to 14.
- Pump shaft in one or at the maximum two pieces, 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.
- Renewable bushings are provided at all interstage casings and columns.
- 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 1500 m3/h (6500 gpm)
- Heads: up to 2000 m (6500 feet)
- Temperatures: from -150°C (-240°F) to 400°C (750°F)
- Design working pressure: up to 210 barg (3000 Psig)
- Rotational speed: up to 4000 rpm
- Max hydrotest pressure: up to 305 barg (4500 Psig)
Design variations
In addition, the following pump designs can be provided:
-
Additional rigid coupling to facilitate mechanical
seal maintenance activities.
-
Inside drain line.
-
Axial thrust tilting pad bearings for ultra high
thrust operating condition.
-
Anti reverse rotation device.
-
Air fan cooling system provided on bearing bracket
and /or mechanical seal when required by hot temperature applications.
-
Special bearing isolators at either bearing housing
ends.
-
Oil mist lubrication (pure or purge).
-
Temperature and/or vibration detection and monitoring
equipment.
Applications
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