1. What is the RRS Roots–Rotary Vane Vacuum System?

The RRS Roots–Rotary Vane Vacuum System is a high-vacuum pumping system built by combining two types of pumps in series:

• RV Roots vacuum pump (main pump)
• SV single-stage rotary vane pump (backing pump)

This configuration allows the system to reach a deeper vacuum, maintain high pumping speed, and operate stably across a wide pressure range.

Because the two pumps complement each other, the system works efficiently for both large gas volumes and high-vacuum processes.

2. How does this vacuum system work?

The working principle is straightforward:

• The rotary vane pump (SV series) starts first.

It creates an initial low vacuum that prepares the system for the next stage.

• Once the pressure drops to a suitable level, the Roots pump (ZJ series) engages.

Roots pumps cannot work from atmospheric pressure directly; they need the backing pump to reduce the load.

• When combined, the system:

1. Quickly removes large quantities of gas
2. Reaches ultimate vacuum levels of ≤10 Pa
3. Maintains stable performance even during long operating cycles

This “two-stage in series” design is the reason for both the system’s high pumping speed and deep vacuum capability.

3. What are the key features of the RRS system?

The RRS system includes several practical engineering features that make it user-friendly and reliable:

• Compact structure

First and second stages are directly connected, minimizing footprint.

• Air-cooled design

No water cooling is required, making the system easier to install and maintain.

• Direct-coupled transmission for both pumps

Ensures high efficiency and reduces mechanical losses.

• Manual or automatic operation modes

Adapts to different user preferences and process needs.

• High vacuum capability (≤10 Pa)

Suitable for demanding industrial processes.

• Built-in filtration device

Protects the pumps from condensables and particulates, extending service life.

4. What types of gases can the system pump?

The RRS system can handle:

• Common process gases
• Condensable vapors (with proper filtration/condensation control)
• Non-corrosive gases

However, it is not suitable for highly corrosive, reactive, or particle-laden gases unless additional protective accessories are added.

5. Where is this vacuum system typically used?

Thanks to its high pumping speed and strong vacuum performance, the RRS system is widely applied in:

• Vacuum smelting and metallurgy
• Power capacitor manufacturing
• Transformer vacuum drying and oil filling
• Vacuum impregnation of materials
• Vacuum coating / PVD processes
• Large high-vacuum industrial equipment

In short, any process requiring large-volume evacuation with stable high-vacuum levels will benefit from this system.

6. What are the main advantages for real users?

New users especially appreciate:

• Fast evacuation time

Large pumping speed helps reduce cycle time in production.

• Stable high vacuum

Roots pump ensures strong performance at low pressures.

• Lower vibration and noise

Air-cooled, direct-coupled operation minimizes mechanical vibration.

• Reduced maintenance needs

Fewer cooling components and integrated filtration help extend service life.

• Flexible automation

Users can operate manually for simple tasks or enable automatic control for continuous processes.

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