MIL’S EVISA E500.R Rotary Vane Vacuum Pump

Product details

MIL’S EVISA E500.R: selecting the right configuration

The E500.R is a larger oil-lubricated rotary vane pump with 513 m³/h nominal flow at 50 Hz. The European motor is rated at 11 kW, with a 14 litre oil charge. For HV duty at 1 mbar, the catalogue lists 266 m³/h; compare that figure with the required gas load rather than sizing solely from nominal flow.

EVISA uses oil-lubricated rotary vane technology with an integrated exhaust oil-mist filter. Tell Girovac the working pressure, process gas and operating duty so the pump and supporting equipment can be checked together.

End vacuum and gas-ballast options

Standard E500.R: ≤ 3 mbar without gas ballast at 50 and 60 Hz. The E500.R HV version is listed at ≤ 0.1 mbar at 50 Hz and ≤ 0.1 mbar at 60 Hz without gas ballast. Do not apply the HV figure to a standard pump.

With gas ballast fully open, the listed end vacuum is ≤ 5 mbar for the standard version and ≤ 1 mbar for HV, at both frequencies. Gas-ballast settings affect vapour handling and the pressure achieved. Specify the gas-ballast arrangement in the quotation.

Performance curves and pump-down time

The manufacturer plots below show evacuation of a 1,000 litre vessel and pumping speed against absolute inlet pressure. Follow the original 50 or 60 Hz line and gas-ballast legend. The low-pressure curves describe HV performance; they do not give a standard E500.R pump an HV pressure rating.

At 50 Hz, the catalogue gives 266 m³/h at 1 mbar for HV duty, compared with 496 m³/h PNEUROP pumping speed. Measurements are specified to PNEUROP 6602 at 20 °C. Actual evacuation time also depends on vessel conditions, pipework, leaks and process gas load. The graphs are vacuum-performance references, not electrical power-consumption curves.

The plotted open-gas-ballast end point and the tabulated fully-open end-vacuum value are not identical in this source. Use the table above for the stated rating and confirm the gas-ballast configuration when selecting from the curves.

Dimensions, connections and electrical supply

The European version uses three-phase 400/690 v, 50 hz, with a 11 kW motor at 1,000 min⁻¹. The listed inlet is DN 80 / 3-inch BSP and the outlet is 3-inch BSP. Other regional versions can have different motors, voltages, connections and weights.

Check the drawing against the precise motor and pump reference being supplied. Allow access to the oil fill, drain, filters and cooling-air paths; the pump outline is not a service-clearance allowance. For a replacement, send a nameplate photograph and the existing installation dimensions.

Oil, service parts and accessories

The catalogue specifies 14 litres of MV99S 100% synthetic oil for the standard lubrication arrangement. An oxygen-service version needs its own approved lubrication and configuration; do not assume the standard oil specification applies.

The model section lists usual-maintenance kits at 3,000 hours and preventive-maintenance kits at 12,000 hours. Use the operating instructions and actual process conditions to set the service schedule, and quote the serial number when ordering a kit. Inlet filtration, liquid protection and gas-ballast options should be matched to the gas stream and installation.

Ask about EVISA servicing · Read the selection guides

Manufacturer datasheet and references

Open the MIL’S EVISA E500.R section in the manufacturer catalogue (PDF, 6.4 MB). Printed pages 50–53 cover technical data, dimensions, references, accessories and performance curves. The PDF viewer starts at page 49; its file page count differs from the printed numbering by one.

Specification basis: MIL’S EVISA / EVISA ATEX catalogue supplied to Girovac. Figures reproduced from the manufacturer document. Listing expanded September 2026; confirm current model configuration, availability and applicable instructions with your quotation.

Questions about this model

What is the pumping speed of the EVISA E500.R?

Nominal flow is 513 m³/h at 50 Hz and 616 m³/h at 60 Hz. PNEUROP pumping speed is 496 and 595 m³/h respectively. Use the performance at your working pressure when sizing the pump.

Is every EVISA E500.R an HV pump?

No. This listing covers standard and HV configurations. The standard version is listed at ≤ 3 mbar without gas ballast; the HV version reaches a different stated end vacuum. Specify the variant when enquiring.

Which oil does the EVISA E500.R use?

The supplied catalogue specifies MV99S 100% synthetic oil and a 14 litre charge for the standard lubrication arrangement. Confirm the exact version and do not apply this specification to oxygen service.

What should I send for a quotation?

Include the complete model and variant, working pressure, gas or vapour load, vessel volume and required cycle time. Add the electrical supply, connection details and any filters or controls. For an existing pump, include its serial number and a nameplate photo.

Compare EVISA models

EVISA E400.R · EVISA E600.R · All MIL’S equipment

Select Compare on up to three listings to view their specifications together. Keep frequency, version and gas-ballast conditions alongside the numbers.

Vacuum measurement and calibration questions

Which vacuum gauges could be useful with this equipment?

Compare the 0–25 mbar absolute capsule gauge for a defined low-pressure dial range with Pirani vacuum transducers for electronic measurement over a wider pressure span. portable meters and data loggers can help record pump-down behaviour. Choose by the actual working pressure and required accuracy, then check the gas and connection.

Can Girovac arrange calibration for the measuring instruments?

Yes. Use our vacuum gauge calibration service to specify the instrument, pressure points and certificate requirement. If your process relies on a displayed controller reading, tell us about the complete measuring chain.