The RUVAC WH/WHU pumps series are technological leaders in the area of Roots vacuum pumps. Both motors and oil reservoirs are water cooled thereby perfectly balancing the internal temperature management of the pumps resulting in significantly lower oil temperatures and thus a longer oil service life. At ultimate pressure, emissions are reduced by approximately 50% and the motor coils can sustain higher loads while at the same time offering improved efficiency.
Product Category : Roots Blower


This type of roots blower is available with pumping speed ranging from 700 m3xh-1 to 7000 m3xh-1, and all are equipped with water cooling.


Advantages to the User
–  Lower energy costs through innovative motor technology IE 2
–  Minimized space requirements due to an extremely compact design
–  Easy system integration
–  Optimum price-to-performance ratio; high pumping speed up to 9800 m 3 /h @ 70 Hz with optional
frequency converter
–  Integrated water cooling system for installation within closed systems
–  Parts in contact with the cooling water are made of stainless steel (corrosion-free)
–  Trouble-free operation with toxic or corrosive media owing to the hermetically sealed motor
–  No shaft seals towards atmosphere, therefore high reliability, long service intervals and no oil leaks
–  Conversion from vertical to horizontal pumping action can be done from the side of the customer
(for WH 4400/7000)

Typical Applications
The Roots pumps of the WH series were developed for deployment in all applications with high requirements
regarding operating pressure, cycle times and system uptime.
–  Solar industry
–  Furnace construction
–  Industrial coating processes
–  Research
–  Space simulation

For more detailed specifications of Leybold RUVAC WH/WHU, please feel free to Contact Us.
We are more than pleased to discuss about your process and to provide full knowledge about what is the best for your needs.


Pumping speed range 700 to 7000 m3xh-1
High pumping speed up to 9800 m 3 /h @ 70 Hz
Ultimate pressure approximately 50 %