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Eurovacuum EVR-series View the EVR-series catalog (pdf) Roots Vacuum Pumps:
Roots Vacuum Pumps, also called: Booster pump or Roots blower, are positive displacement pumps were two symmetrically shaped impellors rotate in opposite direction inside the pump housing. Roots pump are generally used to increase the pumping speed and/or to reach a higher end-vacuum on the pump system. Increasing the pumping speed:
Eurovacuum Roots pumps are able to run at high rotation speed as the impellors are rotating non-contact. Due to the high rotation speed it is possible to have a high pumping speed with a relative small sized pump. It is possible to pump high quantities of gas in combination with a relative small backing pump. The energy consumption of such a system is much lower then of a single backing pump with the same pumping speed. Reaching a higher end-vacuum
Eurovacuum Roots pumps are capable of increasing the end-vacuum, ultimate pressure, of a pump system with a factor 10. Using a system with 2 Roots pumps and a corresponding backing pump it is possible to reach a ultimate pressure of up to 10-5mbar (10-3 Pa). In some situations this will make the use of additional high vacuum pumps (Turbo molecular pumps or Diffusion pumps) unnecessary. Magnetic Drive
Most of the Eurovacuum Roots pumps are available with a Magnetic Drive. This drive eliminates any rotating seals that are subject of wear and cause leaking of the pump. By using a Magnetic Drive the time between maintenance will be extended by a factor 2 or 3. By-pass Valve (pressure control):
The by-pass valve is mounted between the inlet and the exhaust and controls the pressure difference by opening and closing the by-pass valve by gravity. When the pressure difference between the inlet and exhaust is to high the by-pass valve will open and protects the Roots pump from overheating. This way it is possible to run the Roots pump at the same time that the backing pump starts and achieving the maximum pumping speed, also at higher pressures.  | EVR-0125
Pumpspeed (50Hz): 108 m3/h
Motor power: 0,75 kW
Nominal speed: 2825 rpm
Available with: Magnetic drive & By-pass valve
More info |  | EVR-0250
Pumpspeed (50Hz): 250 m3/h
Motor power: 1,1 kW
Nominal speed: 2825 rpm
Available with: Magnetic drive & By-pass valve
More info |  | EVR-0500
Pumpspeed (50Hz): 540 m3/h
Motor power: 2,2 kW
Nominal speed: 2840 rpm
Available with: Magnetic drive & By-pass valve
More info |  | EVR-1000
Pumpspeed (50Hz): 1080 m3/h
Motor power: 4 kW
Nominal speed: 2890 rpm
Available with: Magnetic drive & By-pass valve
More info |  | EVR-2000
Pumpspeed (50Hz): 2160 m3/h
Motor power: 7,5 kW
Nominal speed: 2900 rpm
Available with: Magnetic drive & By-pass valve
More info | | EVR-4500
Pumpspeed (50Hz): 4320 m3/h
Motor power: 11 kW
Nominal speed: 2900 rpm
Available with: Magnetic drive & By-pass valve
More info |  | EVR-7000
Pumpspeed (50Hz): 6480 m3/h
Motor power: 15 kW
Nominal speed: 2930 rpm
Available with: By-pass valve
More info |  | EVR-9000
Pumpspeed (50Hz): 9000 m3/h
Motor power: 18,5 kW
Nominal speed: 2930 rpm
Available with: By-pass valve
More info |
Also these products are conform CE-norms, see EC Attestation of Conformity
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