External Gear Pump
External Gear Pump
External Gear Pump
External Gear Pump
External Gear Pump
External Gear Pump
✅ What is an External Gear Pump?
An external gear pump is a positive displacement pump that uses two meshing external gears to move fluid. As the gears rotate, they create suction at the inlet, draw in fluid, and force it through to the outlet at high pressure.
| Parameter | Typical Range / Description |
|---|---|
| Flow Rate | 0.5 to 500+ LPM (Liters per Minute) |
| Max Pressure | Up to 200 bar (typical range: 7 to 150 bar depending on model) |
| Viscosity Range | 1 to 100,000 cSt (ideal for medium to high-viscosity fluids) |
| Temperature Range | -20°C to 200°C (with proper materials/seals) |
| Materials of Construction | Cast Iron, Stainless Steel, Bronze, Aluminium |
| Sealing | Mechanical Seal, Gland Packing, or Magnetic Coupling |
| Mounting | Foot Mount or Flange Mount |
| Rotation | Usually Bi-directional (depends on gear configuration) |
External Gear Pump
Fluids Handled:
- Hydraulic Oil
- Lubricating Oil
- Fuel Oil, Diesel
- Solvents and Chemicals
- Paints, Resins, Adhesives
- Polymer Liquids, Bitumen
- Coolants and Heat Transfer Fluids
- Vegetable Oil and Syrups (if stainless steel used)
Common Applications:
| Industry | Application |
|---|---|
| Hydraulics | Oil circulation and pressure generation |
| Automotive | Lubrication systems, fuel transfer |
| Chemical Processing | Pumping solvents, resins, acids (with SS materials) |
| Food & Beverage | Transferring edible oils, syrups (with FDA-grade materials) |
| Oil & Gas | Fuel transfer, lube oil systems |
| Paint & Ink | Accurate metering of viscous liquids |
| Power Generation | Circulating thermal oils or coolants |
| Textile Industry | Dye and chemical handling |
Advantages of External Gear Pumps:
- Compact and simple design
- Accurate and constant flow
- Handles high pressure efficiently
- Suitable for wide viscosity range
- Long life with minimal maintenance
