Working principle and attributes:
The series HGL, HG pump is a type of single-stage and single-cylinder rotary piston vacuum pump. It is drastically improved series H rotary piston pump and contains 4 patents; its common abilities have a fantastic improvement.
Rotary piston vacuum pump is actually a kind of vacuum manufacturing equipment suitable for pumping ordinary gases and condensable gases(whenever a gasoline ballast utilized). The pump has 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 show in working 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 transformed repetitively, so that pumping objective may be achieved.
The series HGL, HG pump can be a backing pump when combined with an additional high vacuum pump as well as operate singly. It truly is widely utilized in vacuum smelting, vacuum drying, vacuum impregnation and large vacuum simulation testing,etc.
ROTARY PISTON VACUUM PUMPS
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