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The GVSO Series pump is a vertical centrifugal chemical pump, of single or multi-stage construction, for use in the chemical industry.

Applications

For pumping chemically aggressive liquids, contaminated fluids, melts and liquefied gases. Examples of use: H₂SO₄ at all concentrations, liquid sulphur, PTA, tars, molten salts, etc.

Specifications

• Q max: 5,300 gpm (1,200 m3/hr)
• H max: 394 ft (120 m)
• T max: 1,022 deg F (550 deg C)
• Materials: Cast iron, cast steel, stainless steels, hastelloy and other high alloys
• Submersion depths to 52 feet (16 meters)

Pumping Temperature

• From –160 °C to +550 °C (-256 °F to 1022 °F)
• Up to +350 °C (+662 °F) for the magnetic drive design.

Construction Features

• Compact double volute casing to balance out radial loads.
• Closed impeller.
• Low flow velocity, giving minimal corrosion damage.
• Shaft column separate from discharge pipe. The two form a compact, space-saving unit. This gives optimum stability at submersion depths up to 16 m (52 ft). Shaft is supported by anti-friction bearings (5.1) located above the mounting flange, and corrosion resistant sleeve bearings (5.2) which come into contact with the medium and which are lubricated either by the pumped medium or by an external source of liquid. At submersion depths above 2100 mm (82 inches) there are one or more intermediate bearings.
• Shaft seal in various designs such as stuffing box (normal / gastight / cooled / heated) or mechanical seal (single / double / gas-barrier seal).
• Modular construction
• 22 pump sizes with 5 different shaft diameters and thrust bearing lanterns.
• Economic spares holding.

Design with Magnetic Coupling

• Magnetic drive has no contact with the pumped medium, as it is located above the mounting flange.
• Built on the modular system. This makes it possible to change from the conventional design to the magnetic drive, without any problems.
• A further advantage of the dry running magnetic drive is that, unlike the conventional GVSO, there is no odour emission.
• The magnetic coupling is supported by ball bearings instead of sleeve bearings.
• A plastic spacer-can is fitted as standard (with a ceramic spacer-can available as an option). Therefore there are no eddy current losses and consequently no heat is generated within the magnetic coupling, which eliminates the need for a cooling system.

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