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. The pumps can be supplied with an optional 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. The pump has a 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-500M (with magnetic drive); 3 phase; 230V; 50/60Hz 662021
EVR-500BM (with bypass and magnetic drive); 3 phase; 230V; 50/60Hz 662031


Specification Unit 50 Hz 60 Hz
Nominal displacement m3/h 540 650
Ultimate vacuum mbar 3×10-4 3×10-4
Delta P of the relieve valve mbar 48 48
Motor power kW 2,2 2,2
Nominal speed rpm 2825 3400
Type of protection IP 55 55
Oil filling for the gearbox ltr 2,8 2,8
Weight (B/M/BM version) kg 170 (210/180/220) 170 (210/180/220)
Noise level dB 72 75
Connection inlet DIN 100 100
Connection outlet DIN 100 100


Accessoires Art.No.
Adapter set for ISO-K flanges; Inlet DN 100 ISO-K 662701
Adapter set for ISO-K flanges; Outlet DN 100 ISO-K 662702


Consumables Art.No.
Sealing kit for EVR-500M 662921
Sealing kit for EVR-500BM 662931
Maintenance kit for the EVR-500M 662922
Maintenance kit for the EVR-500BM 662932
Standard oil filling 1 ltr 100400

Pumping speed curve




Dimensions (mm) L0 L1 L2 L3 L4 H1 H2
EVR-500 922 267 195 580 20 475 90
H3 W1 W2 W3 4-ØC
195 320 388 245 4-Ø18