your best partner for vacuum


The EVR-series are robust Vacuum Roots Booster Pumps

These Roots pumps are excelent tools to boost up your pumping speed and the reach a much better ultimate vacuum. These EVR-series Roots pump are useally combined with the pre-vacuum pumps of the following series: EV-series, EVD-series, EVSW-series and EVSL-series. The pumps can be supplied with two options: the bypass system and valve, this bypass system allows the Roots pump to be started already at atmosphere at the same time as the pre-vacuum pump. Teh second option is the magnetic drive, this magnetic drive eliminates allows the pump to run without a shaft seal, so it reduces downtime and service costs. Due to the lower ultimate vacuum the pump is oftenly used in applications like:

  • Vacuum packaging
  • Vacuum metallurgy
  • Thin film coating
  • Spae simulation
  • Freeze drying
  • Vacuum impregnation
  • Low density wind tunnels
  • Vacuum distillation
  • Drying and de-gassing

Part Number

Ordering information Art.No.
EVR-9000B (with bypass); 3 phase; 230V; 50/60Hz 667011


Specification Unit 50 Hz 60 Hz
Nominal displacement m3/h 9000 10800
Ultimate vacuum mbar 3×10-4 3×10-4
Delta P of the relieve valve mbar 44 44
Motor power kW 18,5 18,5
Nominal speed rpm 2930 3500
Type of protection IP 55 55
Oil filling for the gearbox ltr 10,5 10,5
Weight (B/M/BM version) kg 1500 1500
Noise level dB 80 82
Connection inlet DIN 320 320
Connection outlet DIN 320/250 320/250


Accessoires Art.No.
Adapter set for ISO-K flanges; Inlet DN 320 ISO-K 667701
Adapter set for ISO-K flanges; Outlet DN 320 ISO-K 667702


Consumables Art.No.
Sealing kit for EVR-9000B 667911
Maintenance kit for the EVR-9000B 667912
Standard oil filling 1 ltr 100400

Pumping speed curve




Dimensions (mm) L0 L1 L2 L3 L4
EVR-9000 2000 605 660 830 920
H W1 4-ØC
40 460 4-Ø26