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Rotary piston vacuum pump is suitable for pumping air and other ordinary gases, when a gas ballast valve is used it can also pump condensable gases. The pump must be fitted with appropriate accessories if gas is rich in oxygen, explosive, corrosive to ferrous metal, chemical reactive with vacuum pump oil. The HGL, HG pump can be operated singly or as a backing pump combined with other high vacuum pump, such as diffusion pump and oil booster pump....... |
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Rotary vane vacuum pump is suitable for pumping air and other ordinary gases, when a gas ballast valve is used it can also pump condensable gases. The pump must be fitted with appropriate accessories if gas is rich in oxygen, explosive, corrosive to ferrous metal, chemical reactive with vacuum pump oil. The 2XZ rotary vane vacuum pump can be operated singly ...... |
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As mechanical type vacuum pump equipped with a pair of varying pitch screws in pump housing, LG series screw vacuum pump can realize the gas intake and exhaust by the synchronous rotation of the two screws in high speed.
The two dynamic balanced screws are supported by bearings and installed within pump chamber. There are clearances between the two screws and the pump housing, so the pump operation ......
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The series ZJP roots vacuum pump is with overflow valve. The figure-of-eight rotors are counter-rotating at a constant speed inside the pump housing for suction and exhaust of gas. Two rotors are supported by two bearings and synchronized by a pair of gear, which ensure these two rotors in certain relative positions. They are near to one anthor and to the housing without actual contacting ,so lubrication is unnecessary ...... |
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