Impeller pump WEIR Oil Gas

Heavy duty barrel multistage pumps, radially split, diffuser type with single or double entry 1st stage impeller.

Pump components geometry optimised through hydraulic, structural, thermal and dynamic F.E.M. analysis lead to an high product reliability. The "modular design" philosophy permits to cover a wide range of applications replacing the main hydraulic components i.e. only impeller/diffuser. Casing, shaft, mechanical seals, bearing frames result therefore fully interchangeable and reusable. Opposed impeller and diffuser configuration to minimise axial and radial hydraulic thrusts.
Large eye single suction or double suction 1st stage impeller to meet low NPSH requirements.
Hydraulic performances checked on a Single Stage Test Equipment. This is particularly useful to verify the effective 1st stage NPSHR.
Easy maintenance procedure.
Central and lateral balancing drums adequately shaped to optimise pump rotordynamic behaviour.
Shrink fitted impellers for higher operational speed (over 4500 rpm).
Full cartridge design.
Centerline casing mounting for high temperature stability.
Barrel forged in suitable material to improve stress and corrosion resistance.
Deep stuffing boxes, designed in accordance to API 682 Std., suitable to accept any type of mechanical or packing seals.
Axial split bearing housing for easy inspection and maintenance procedure.
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.

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