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Busch Rotary Vane Vacuum Pump Wins Vacuum Efficiency Test

TÜV Süd direct comparison demonstrates oil-lubricated rotary vane vacuum pump’s superiority over oil-sealed screw vacuum pump.

Busch R 5 Ra 0400 0630 C

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A recently published comparison study, initiated by the manufacturer of an oil-sealed screw vacuum pump (SVP), suggested the superiority of an oil-sealed screw vacuum pump over an R 5 RA 0630 C oil-lubricated rotary vane vacuum pump (RVVP) from Busch LLC. However, this result came about using a test setup that seems very unrealistic.

New results from new study

Recently, the independent testing organization TÜV Süd carried out a comparison of the pumps, realistically simulating a standard industrial process. Under these conditions, the result was clearly in favor of the oil-lubricated rotary vane vacuum pump.

In the TÜV Süd comparison test (Figure 1), the same vacuum pumps were used as in the previous test. Each pump was supported by an identical vacuum booster. Real operation was simulated, without breaks or nightly shutdowns. The test setup and procedure were checked by a well-known manufacturer of vacuum packaging machines and confirmed as a realistic simulation. Figure 1

In the test, a packaging machine with a 300-liter chamber and an 11.5-meter long pipe system between the chamber, vacuum booster, and vacuum pump was used. The chamber was evacuated cyclically to a vacuum level of 5 mbar.

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