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By certification 
Rotary vane vacuum pumps are divided into single-stage and double-stage.
The BTV Series is a kind of oil seal, single stage, direct connection, and air cooled rotary vane vacuum pump which consists of a high-pressure stage and a low-pressure stage. The pump is improved products, using German technology and improvement of the vacuum pump.
Its efficient, reliable, lower noise, and easy to maintain design, not only in the vacuum refrigeration, drying. freeze drying, vacuum degassing.
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Advantages:
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1. It can be used alone, can also be used as other high vacuum pump or super high vacuum pump before the pump:
2. The preparation of special design of gas valve, prevent water pump oil, pump ail extended the use of time:
3. High pumping efficiency, high vacuum, long service life
4. With automatic anti returning oil check valve and never return oil; when the pump stops, anti oil return valve will automatically close the air inlet, by pumping the container holding 10-100Pa role:
5. Specially equipped with vacuum drying box. Freeze drying machine. Printing machine, coating machine, glove box. Refrigerator assembly line:
6. Can be equipped with small caliber conversion connector, KF interface, flange interface:
7. When the suction with steam, particles and corrosive gases, in the inlet of the pump shall install auxiliary equipment. such as condensers, filter and so on.
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