India’s ever growing requirements of capacity addition present a substantial opportunity for growth. The Indian pump industry is growing at an annual CAGR of ~10%, which is higher than the international CAGR average of ~6%.

Broadly speaking, pumps can be classified – based on their method of operation – into the following two types:

  • Dynamic Pumps – which account for ~95% of pumps in India – include:
    • Centrifugal Pumps
    • Specialty Pumps
  • Positive Displacement Pumps – which account for ~5 of pumps in India – include:
    • Reciprocating Pumps
    • Rotary Pumps
Dynamic PumpsPositive Displacement Pumps
Dynamic pumps include all types of pumps using fluid velocity and the resulting momentum to pump and move the fluid through the piping system.

Although dynamic pumps usually have lower efficiencies than positive displacement pumps, they require lower maintenance. They are also capable of operating at high speeds and high fluid flow rates.

Classification of Dynamic Pumps

Dynamic pumps can be classified into the following sub-categories:

  • Rotary Pumps
    • Centrifugal Pumps
    • Axial Flow Pumps
    • Mixed Flow Pumps
  • Special Pumps
    • Jet Pumps
    • Electromagnetic Pumps for Liquids & Metals
    • Fluid Actuated/Gas Lift or Hydraulic Pumps
Positive displacement pumps operate by filling and displacing liquid from a cavity. Such pumps deliver a constant flow and volume of liquid without discharge pressure or head.

Positive displacement pumps are ideal for a low flow–high pressure combination, and other application niches.

Classification of Positive Displacement Pumps

Positive displacement pumps can be classified into the following sub-categories:

  • Reciprocating Pumps
    • Piston / Plunger Pumps
      • Single Acting Piston Pumps
      • Double Acting Simplex Pumps
      • Double Acting Duplex Pumps
    • Diaphragm Pumps
      • Single Diaphragm
      • Double Diaphragm
    • Rotary Pumps
      • Single Rotor Pumps
        • Sliding Vane Pumps
        • Flexible Tube or Lining Pumps
        • Screw Pumps
        • Radial Pumps
        • Multiple Rotor Pumps
          • Gear Pumps
          • Double Lobe Pumps
          • Triple Lobe Pumps