Centrifugal Pump Materials

Written by Matt Milbury on . 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