The series WA/WAU Roots vacuum pumps are provided with directly flange-mounted air-cooled standard 3 phase motors. The oiled radial sealing rings of the RUVAC WA/WAU for sealing the shaft against the atmosphere are made of FPM (fluor caoutchouc).

The WS/WSU series pumps are driven by air or water-cooled canned motors.

Roots vacuum pumps of the series WAU/WSU are provided with an additional integrated pressure equalization line and a differential pressure valve.

Pumps from these series are supplied with a vertical pumping action as standard.

Advantages to the User

  • - Two air-cooled series, each with four models
  • - Reliable and trouble-free
  • - Sealing rings with their housing can be readily replaced
  • - Shaft seals and elastomer seals made of FPM/Viton
  • - Air-cooled standard motors in accordance with IEC dimensions eg. NEMA dimensions
  • - Easy to exchange with custom motors
  • - Integrated pressure equalization line for protection against overloading at high pressures
  • - Pumping direction may be changed as required
  • - ATEX versions compliant to 94/9/EC possible

Typical Applications

  • - For oil-free compression of gases and vapors in combination with a backing pump.
  • - Short cycle pumping processes also in the presence of large quantities of gas and vapor.

Supplied Equipment

  • - RUVAC WA/WAU are supplied as standard for a vertical pumping action, horizontal pumping action upon request
  • - Mineral oil N 62 is used as standard
  • - Gasket in the intake flange with dirt sieve
  • - The required oil filling is included in separate bottles

Models available:
RUVAC WA/WAU & WS/WSU: 251 / 501 / 1001 / 2001


Brand Leybold.

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