Pump components geometry optimised through hydraulic, structural, thermal and dynamic F.E.M. analysis lead to an high product reliability.
Double suction, closed impeller, with solid hub, to maintain axial balance, under different operating conditions.
Rotor operates away it’s critical speeds.
Centerline casing mounting for high temperature stability.
Deep stuffing boxes integrally cast with pump casing, in accordance to API 682 Std. suitable to accept any type of mechanical or packing seals.
Labyrinths and deflectors at either bearing housing to maximise protection against dirt.
A wide range of sizes and material combinations complete the variety of the offered product.

Main design features

Fully designed according to latest edition of API 610 Std.
Suction and discharge nozzles, integrally cast with the casing, are normally arranged in top-top position. Side-top or side-side nozzle arrangements are available.
‘CARB’ or hydrodynamic line bearing for high temperature application.
Three bearings arrangements available:
Ball Radial / Ball Thrust
Sleeve Radial / Ball Thrust
Sleeve Radial / Tilting Pads Thrust (Kingsbury Type).

Technical data

Capacities: up to 7500 m3/h (33000 USgpm)
Heads: up to 380 m (1200 feet)
Temperatures: from -30°C (-20°F) to 455°C (850°F)
Design working pressure: up to 100 barg (1400 Psig)
Rotational speed: up to 3800 rpm

Design options

For extremely low NPSH duties, a number of DSA pumps can be equipped with inducers.
Steam jacketed casing for special applications.
Replaceable stuffing box cooling or heating jackets.
Double shaft extension.
Cylindrical fit at coupling shaft end.
Special bearing isolators at either bearing housing ends.
Oil mist lubrication system (pure or purge).
Forced feed lubrication system.
Temperature and/or vibration detection and monitoring equipment.
Baseplate available with three point gimbal mounting (FPSO services).