Centrifugal Pump Materials

Written by Matt Milbury. Posted in Pump

Different Materials pose separate problems. The typical process fluids found in the oilfield and the pump materials that are typically chosen are contained on this page. Note: checking with a materials engineer for compatibility prior to specification should always be completed.

Brine

Dilute Brine

  • Fluid End
    • Casing - Ductile Iron
    • Impeller - 316 Stainless Steel
    • Shaft / Sleeve - 316 Stainless Steel
  • Seal
    • Alloy 20 Metal Parts, Carbon vs Tungsten-Carbide with Viton O-Rings

Concentrated

  • Fluid End
    • Casing - Stainless Steel Alloy 20 or Stainless Steel CD4M
    • Impeller - Stainless Steel Alloy 20 or Stainless Steel CD4M
    • Shaft / Sleeve - Stainless Steel Alloy 20
  • Seal
    • Alloy 20 Metal Parts, Carbon vs Tungsten-Carbide with Viton O-Rings

Hydrogen Sulfide

Dilute (>15%)

  • Fluid End
    • Casing - Ductile Iron
    • Impeller - 316 Stainless Steel
    • Shaft / Sleeve - 316 Stainless Steel
  • Seal
    • Alloy 20 Metal Parts, Carbon vs Ceramic or Silicon-Carbide with Viton O-Rings

15%-93% Hydrogen Sulfide

  • Fluid End
    • Casing - Alloy 20
    • Impeller - Alloy 20
    • Shaft / Sleeve - 316 Stainless Steel
  • Seal
    • Hastelloy C Metal Parts, Carbon vs Ceramic or Silicon Carbide, Viton O-rings

Concentrated (93-98%)

  • Fluid End
    • Casing - Ductile Iron
    • Impeller - Ductile Iron
    • Shaft / Sleeve - Alloy 20
  • Seal
    • Alloy 20 Metal Parts, Carbon vs Ceramic or Silicon-Carbide with Viton O-Rings

Caustic

  • Fluid End
    • Casing - Ductile Iron (acceptable) / 316 Stainles Steel (preferred)
    • Impeller - 316 Stainless Steel
    • Shaft / Sleeve - 316 Stainless Steel
  • Seal
    • 316 Stainless Steel Metal Parts, Tungsten-Carbide vs Silicon-Carbide, EPDM O-Rings. Water quench over outside of seal faces

Hydrochloric Acid

  • Fluid End
    • Casing - Non-metallic ONLY
    • Impeller - Non-metallic
    • Shaft / Sleeve - Ceramic
  • Seal
    • Any High Quality Double Seal with Viton O-Rings and Carbon vs Ceramic Seal faces. Water to lubricate seal faces.

Another option would be a Magnetic Drive pump