what kind of Vacuum pumps are used for transformer oil filter machine?

For a transformer oil filtration machine, you need a high-vacuum pump to remove moisture, gases, and impurities from the oil effectively. The most commonly used vacuum pumps for this application are:

1. Rotary Vane Vacuum Pump

Type: Positive displacement pump

Vacuum Level: Can achieve up to 0.1 mbar (100 microns)

Best for: Primary vacuum stage in oil filtration systems

Advantages:

Reliable and cost-effective

Good for medium vacuum applications

Works well with a booster pump for deeper vacuum

2. Roots Vacuum Pump (Booster Pump)

Type: Momentum transfer pump

Vacuum Level: Can reach 0.01 mbar (10 microns) when used with a backing pump

Best for: High-vacuum applications in transformer oil purification

Advantages:

Increases vacuum efficiency

Speeds up dehydration and degassing of transformer oil

3. Combination of Rotary Vane & Roots Pump (Two-Stage System)

Why? A rotary vane pump is used as the primary pump, and a Roots pump is added to improve vacuum efficiency.

Vacuum Level: Can achieve 0.001 mbar (1 micron)

Ideal for: High-voltage transformer oil purification where deep vacuum is required.

Which One Should You Choose?

For small to medium transformer oil filtration systems, a single-stage rotary vane pump is sufficient.

For large-scale or high-voltage transformer maintenance, a Roots booster pump with a rotary vane pump is the best choice.

Let me know your specific application details, and I can suggest a more precise model!