Impellers & Diffusers

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Overview

The impeller and diffuser form the hydraulic heart of every ESP stage. Fiastar machines both to tight tolerances for optimal head, flow and efficiency — with PTFE-based coating options for abrasive and corrosive service.

Key features

• ✓ Precision-machined profiles for optimal head-and-flow performance
• ✓ Balanced hydraulics that reduce vibration and axial load
• ✓ PTFE-based coating options for abrasive and corrosive wells
• ✓ Consistent stage-to-stage quality for reliable stacking

Typical applications

Technical specifications

Pump series	338 / 400 / 538 / 562 / 675 / 862
Flow range per stage	100 – 60,000 bpd
Head per stage	1 – 12 m (application dependent)
Stage designs	Compression and floater
Metallurgy	Ni-Resist, 9Cr, 13Cr, Duplex 2205
Coating	Fiastar PTFE-composite (recommended for severe service)
Operating temperature	Standard 150 °C / HT 230 °C
Bearing material	Zirconia or tungsten carbide for abrasive service
Compliance	API 11S2 dimensional envelopes