Leybold RUVAC series
The Leybold RUVAC series comprises powerful Roots vacuum pumps for generating rough and medium vacuum. The dry-compressing WA/WAU, WS/WSU and WH/WHU ranges offer, depending on the version, air-cooled or water-cooled drives, integrated pressure equalisation systems and flexible speed control.
- 23Models
- 3Series
- 210–4,700m³/h pumping speed at 50 Hz
- 8 × 10⁻⁴mbar lowest ultimate pressure
- 1.1–18.5kW rated motor power at 50 Hz

Product overview
Products of the Leybold RUVAC series
Use the filters on the left to narrow the models down by their key figures. Each row leads to the model with its technical data and variants.
RUVAC WA/WAU series 8 models
RUVAC WA 251Pumping speed 210 m³/h 50 Hz251 m³/h 60 HzUltimate pressure 8 × 10-4 mbarRated motor power 1.1 kW 50 Hz1.1 kW 60 HzVariants 3
RUVAC WAU 251Pumping speed 210 m³/h 50 Hz251 m³/h 60 HzUltimate pressure 8 × 10-4 mbarRated motor power 1.1 kW 50 Hz1.1 kW 60 HzVariants 5
RUVAC WA 501Pumping speed 410 m³/h 50 Hz530 m³/h 60 HzUltimate pressure 0.04 mbarRated motor power 2.2 kW 50 Hz2.2 kW 60 HzVariants 4
RUVAC WAU 501Pumping speed 410 m³/h 50 Hz530 m³/h 60 HzUltimate pressure 0.04 mbarRated motor power 2.2 kW 50 Hz2.2 kW 60 HzVariants 6
RUVAC WA 1001Pumping speed 800 m³/h 50 Hz1,000 m³/h 60 HzUltimate pressure 0.04 mbarRated motor power 4 kW 50 Hz4 kW 60 HzVariants 3
RUVAC WAU 1001Pumping speed 800 m³/h 50 Hz1,000 m³/h 60 HzUltimate pressure 0.04 mbarRated motor power 4 kW 50 Hz4 kW 60 HzVariants 6
RUVAC WA 2001Pumping speed 1,850 m³/h 50 Hz2,100 m³/h 60 HzUltimate pressure 0.04 mbarRated motor power 7.5 kW 50 Hz7.5 kW 60 HzVariants 3
RUVAC WAU 2001Pumping speed 1,850 m³/h 50 Hz2,100 m³/h 60 HzUltimate pressure 0.04 mbarRated motor power 7.5 kW 50 Hz7.5 kW 60 HzVariants 7RUVAC WH/WHU series 7 models
RUVAC WH 700Pumping speed 620 m³/h 50 Hz740 m³/h 60 HzUltimate pressure Rated motor power 2.2 – 3.8 kW 50 Hz2.6 – 3.8 kW 60 HzVariants 9
RUVAC WH 2500Pumping speed 2,200 m³/h 50 Hz2,500 m³/h 60 HzUltimate pressure Rated motor power 6.2 – 11 kW 50 Hz7.4 – 11 kW 60 HzVariants 24
RUVAC WHU 2500Pumping speed 2,200 m³/h 50 Hz2,500 m³/h 60 HzUltimate pressure Rated motor power 6.2 kW 50 Hz7.4 kW 60 HzVariants 10
RUVAC WH 4400Pumping speed 3,300 m³/h 50 Hz3,900 m³/h 60 HzUltimate pressure Rated motor power 11 – 18.5 kW 50 Hz11 – 18.5 kW 60 HzVariants 14
RUVAC WHU 4400Pumping speed 3,300 m³/h 50 Hz3,900 m³/h 60 HzUltimate pressure Rated motor power 18.5 kW 50 Hz18.5 kW 60 HzVariants 7
RUVAC WH 7000Pumping speed 4,700 m³/h 50 Hz5,300 m³/h 60 HzUltimate pressure Rated motor power 11 – 18.5 kW 50 Hz11 – 18.5 kW 60 HzVariants 19
RUVAC WHU 7000Pumping speed 4,700 m³/h 50 Hz5,300 m³/h 60 HzUltimate pressure Rated motor power 18.5 kW 50 Hz18.5 kW 60 HzVariants 3RUVAC WS/WSU series 8 models
RUVAC WS 251Pumping speed 210 m³/h 50 Hz251 m³/h 60 HzUltimate pressure 8 × 10-4 mbarRated motor power 1.1 kW 50 Hz1.4 kW 60 HzVariants 2
RUVAC WSU 251Pumping speed 210 m³/h 50 Hz251 m³/h 60 HzUltimate pressure 8 × 10-4 mbarRated motor power 1.1 kW 50 Hz1.4 kW 60 HzVariants 4
RUVAC WS 501Pumping speed 410 m³/h 50 Hz530 m³/h 60 HzUltimate pressure 0.04 mbarRated motor power 2.2 kW 50 Hz2.4 kW 60 HzVariants 2
RUVAC WSU 501Pumping speed 410 m³/h 50 Hz530 m³/h 60 HzUltimate pressure 0.04 mbarRated motor power 2.2 kW 50 Hz2.4 kW 60 HzVariants 5
RUVAC WS 1001Pumping speed 800 m³/h 50 Hz1,000 m³/h 60 HzUltimate pressure 0.04 mbarRated motor power 4 kW 50 Hz4.4 kW 60 HzVariants 3
RUVAC WSU 1001Pumping speed 800 m³/h 50 Hz1,000 m³/h 60 HzUltimate pressure 0.04 mbarRated motor power 4 kW 50 Hz4.4 kW 60 HzVariants 6
RUVAC WS 2001Pumping speed 1,850 m³/h 50 Hz2,100 m³/h 60 HzUltimate pressure 0.04 mbarRated motor power 7.5 kW 50 Hz8.5 kW 60 HzVariants 11
RUVAC WSU 2001Pumping speed 1,850 m³/h 50 Hz2,100 m³/h 60 HzUltimate pressure 0.04 mbarRated motor power 7.5 kW 50 Hz8.5 kW 60 HzVariants 15No model matches these filters.
RUVAC WA/WAU series 8 models
RUVAC WH/WHU series 7 models
RUVAC WS/WSU series 8 models
Models that Leybold no longer lists in its current range can be found under Outdated RUVAC models.
About the series
Features and benefits of the RUVAC series
The series at a glance
The RUVAC pumps stand out for their high pumping speeds, reliable and efficient operation and long maintenance intervals. The WA/WAU models offer a robust and maintenance-friendly design, while the WS/WSU ranges with frequency inverter and overload protection allow flexible adaptation to different operating conditions.
The WH/WHU series has a hermetically sealed motor without shaft seals and is therefore particularly suitable for demanding applications involving corrosive or toxic gases. Depending on the model, ATEX versions and various cooling and drive concepts are also available.
With the RUVAC series, Leybold offers a powerful range of Roots vacuum pumps developed to increase pumping speed and to evacuate vacuum systems quickly. The contact-free rotor technology enables reliable, low-wear gas transport and is particularly suitable for demanding high and medium vacuum applications.
In combination with a suitable backing pump, the RUVAC can significantly improve the pump performance and evacuation speed of a vacuum system. The oil-free pump chamber supports clean, low-contamination vacuum generation.
Thanks to its robust design and the proven Roots principle, the RUVAC series offers a reliable, durable and low-maintenance solution for industrial and scientific vacuum applications.
High pumping speed
The Leybold RUVAC series offers a high pumping capacity and, in combination with a backing pump, can significantly increase the pumping speed and evacuation speed of a vacuum system.
For high and medium vacuum
Roots technology is particularly suitable for the generation of high and medium vacuum and allows efficient adaptation to different vacuum requirements.
Contact-free operation
The counter-rotating rotors operate without contact, which reduces mechanical wear in the pump chamber and supports reliable continuous operation.
Operating principle
The Leybold RUVAC series works on the principle of Roots vacuum technology. Two rotors rotating in opposite directions move without contact inside the pump housing and convey the gas drawn in continuously from the inlet to the outlet. Thanks to the high pumping capacity of the rotors, the RUVAC can be used as a booster to significantly increase the pumping speed and performance of a vacuum system.
As the RUVAC operates without contact and oil-free in the pump chamber, it is particularly suitable for applications with high demands on process purity. In combination with a suitable backing pump, the technology enables the efficient generation of high and medium vacuum.
The robust design and the low-wear rotor principle enable reliable, durable and low-maintenance operation. Depending on the version, RUVAC pumps can also be adapted to different process requirements and vacuum ranges.
The RUVAC series is suitable for numerous industrial and scientific applications that call for high pumping speed, fast evacuation, reliable operation and the generation of high and medium vacuum.
The technology page shows the operating principle with an interactive drawing: Roots vacuum pumps.
Standard operating conditions and performance
- Ambient temperature: −20 to 40 °C, depending on the model and version
- Designed for high and medium vacuum applications
Frequently asked questions
Questions about the Leybold RUVAC series
Which models does the Leybold RUVAC series comprise?
Which pumping speeds does the series cover?
What ultimate pressure do the models of the series reach?
How does the technology of the series work?
Does Ehrler & Beck supply spare parts and service for the Leybold RUVAC series?
Which model fits your process?
Tell us the gas to be conveyed, the working pressure and the flow rate you need – we will advise you on selection, spare parts and service.







