Working principle and capabilities:
The series HGL, HG pump is actually a type of single-stage and single-cylinder rotary piston vacuum pump. It really is greatly enhanced series H rotary piston pump and consists of 4 patents; its basic abilities possess a great improvement.
Rotary piston vacuum pump can be a sort of vacuum manufacturing products appropriate for pumping ordinary gases and condensable gases(whenever a fuel ballast utilised). The pump needs to be fitted with appropriate equipment if fuel is wealthy in oxygen, explosive, corrosive to ferrous metal, chemical reactive with vacuum pump oil.
Operation principle show in doing work principle graph: A rotary piston with slide valve across ecentric wheel driven by shaft within the housing. Piston pole can slide and swing freely in arch track. The whole 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, to ensure that pumping goal could possibly be accomplished.
The series HGL, HG pump is usually a backing pump when mixed with a different large vacuum pump likewise as operate singly. It is actually widely utilized in vacuum smelting, vacuum drying, vacuum impregnation and high vacuum simulation testing,and so on.
