Working principle and capabilities:
The series HGL, HG pump is usually a type of single-stage and single-cylinder rotary piston vacuum pump. It is actually tremendously enhanced series H rotary piston pump and consists of 4 patents; its 
common capabilities have a good improvement.
Rotary piston vacuum pump is actually a type of vacuum manufacturing tools ideal for pumping ordinary gases and condensable gases(whenever a fuel ballast utilized). The pump have to be fitted with acceptable equipment if fuel is rich in oxygen, explosive, corrosive to ferrous metal, chemical reactive with vacuum pump oil.
Operation principle display in doing work principle graph: A rotary piston with slide valve across ecentric wheel driven by shaft in the housing. Piston pole can slide and swing freely in arch track. The entire pump chamber is divided into chamber A and chamber B by piston. When shaft rotates the volume of chamber A and chamber B are modified repetitively, so that pumping purpose can be accomplished.
The series HGL, HG pump might be a backing pump when mixed with yet another large vacuum pump also as operate singly. It really is extensively utilized in vacuum smelting, vacuum drying, vacuum impregnation and higher vacuum simulation testing,and so on.
ROTARY PISTON VACUUM PUMPS
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