Main design features

• Back pull-out construction for easy maintenance procedures.
• Choice of multiple impellers for optimum efficiency over a wide operating range. Coverage consists of more than 100 different hydraulics.
• Twin volute configuration to minimise radial loads and shaft deflections (over 2” discharge nozzle size).
• Centerline feet mounting for high temperature stability.
• Bearing bracket geometry optimised in order to definitely eliminate water cooling system, even for high temperature applications (400°C).
• Fan cooling and/or finned bearing bracket.
• Casing, bearing frame and baseplate enough stiff to assure minimum shaft deflections under heavy nozzle load conditions (extended life for seal and bearing).
• Wear rings and balance holes optimised for an extended life under the most adverse suction conditions (duplex angular contact or roller thrust bearings applicable).
• Seals and sealing systems in accordance with API 682 std.
• Baseplate overall dimensions according to API 610 recommendations.

Technical data

• Capacities:  up to 2500 m3/h (11000 gpm)
• Heads:  up to 380 m (1200 feet)
• Temperatures:  from -100°C (-150°F) to 450°C (850°F)
• Design working pressure:  up to 210 barg (3000 Psig)
• Rotational speed:  up to 4000 rpm

Design variations

The following pump designs can be provided:

• Casing and cover with full cooling or heating jackets.
• Open impellers suitable for high viscosity liquids or where significant quantities of solid are present.
• Inducer to reduce NPSH requirements.
• Stuffing box cooling water or heating jacket, easily accessible for inspection and mechanical cleaning.
• Standard or special bearing isolators at either bearing housing ends.
• Oil mist lubrication system (pure or purge).
• Water cooling for bearing bracket.

Applications