Gear pumps are positive displacement pumps, available in a variety of designs, but there are two basic types: external and internal. External gear pumps consists of two identical, interlocking gears supported by separate shafts. Internal gear pumps have two interlocking gears of different sizes with one rotating inside the other.
Typical applications include:
- Petroleum
- Water
- Resins and Polymers
- Fats and Oils
Pump & Machinery offer a wide range of gear pumps from a variety of manufacturers, we stock Tuthill pumps and parts.
The main advantages include:
- Compact and light weight
- Great for a wide range and changeable viscosities
- High efficiency (up to 98%)
- Cost effective
- Very low pulsation
- Limited self priming (seek advise)
- Low or high speed running
- High temperatures - over 300°C
The main disadvantage include:
- Noisy
- Cannot be run dry
- Don't use with abrasive mediums
