LAB1ST UV series pump belongs to high speed, motor direct drive, oil-sealed rotary vane vacuum pumps.The rotor, mounted eccentrically in the pump cylinder,has two vanes & exhaust air. When the pump rotor which was driven by the motor clockwise rotated, the suck compartment will suck air from small to big, and exhaust compartment will complete the transmission of air, then exhaust compartment will exhaust air from big to small, and complete a work cycle from suction-compress-exhaust finally, achieve the vacuum of the system.

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The pump adopts gas ballast valve which can well rule out water vapor. The gas ballast can fill the air for exhaust compartment, which can reduce vapor ultimate partial pressure, the vapor will be removed. So the gas ballast can well remove the vapor in the pump oil, which can prolong the pump service time and prevent the mix for oil and water vapor. 

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