roots screw vacuum unit
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Vacuum Unit
A vacuum unit is a device composed of a vacuum pump, a vacuum gauge, a vacuum valve, a vacuum pipe and a control element, which can obtain different vacuum degrees.
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JZJG Type - Roots Screw Vacuum Unit
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JZJG/JZJGP series Roots screw dry vacuum unit is a dry oil-free vacuum unit composed of ZJ type Roots pump as the main pump and NEG/NEGP series screw vacuum pump as the front pump. After the first stage screw vacuum pump works, the vacuum gauge and vacuum relay control the starting of Roots pump.
