GEAR PUMP

1. Product Overview

Gear pumps are positive displacement pumps that operate on the principle of changing the volume of the pump chamber using two intermeshing gears. As the gears rotate, liquid is drawn into the gear cavities and discharged at high pressure through the outlet.

2. Specialized Technical Specifications

3. Common Types in the Oil & Gas Industry

Customers should select the correct gear type depending on application:

• External Gear Pump:
  • Simple design, low cost, easy maintenance
  • Suitable for clean oils with medium viscosity
• Internal Gear Pump:
  • Handles extremely high viscosity fluids (e.g., bitumen, heavy oils)
  • Quieter operation, better suction efficiency, but higher cost

4. Key Advantages

• Self-priming capability: Can draw oil without priming each time, ideal for underground tanks.
• Stable pressure: Provides strong discharge pressure, enabling oil transfer over long distances or to elevated tanks.
• Rugged design: Few moving parts, highly durable in heavy industrial environments.
• Integrated safety valve (Bypass Valve): Most fuel gear pumps include a built-in relief valve to protect the motor and piping in case of outlet blockage.

5. Why Use for Fuel Applications

• Excellent viscosity handling: Unlike centrifugal pumps, gear pumps perform efficiently with heavy oils.
• Flow proportional to speed: Easy to control fuel delivery by adjusting motor speed.
• Safety: When combined with explosion-proof motors, gear pumps provide absolute safety for fuel depots.