Working principle and options:
The series HGL, HG pump is a kind of single-stage and single-cylinder rotary piston vacuum pump. It’s drastically enhanced series H rotary piston pump and includes four patents; its general abilities possess a great improvement.
Rotary piston vacuum pump is really a type of vacuum manufacturing gear appropriate for pumping ordinary gases and condensable gases(when a fuel ballast applied). The pump need to be fitted with acceptable equipment if gasoline is wealthy in oxygen, explosive, corrosive to ferrous metal, chemical reactive with vacuum pump oil.
Operation principle demonstrate in working principle graph: A rotary piston with slide valve across ecentric wheel driven by shaft inside 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 transformed repetitively, to ensure pumping function may be achieved.
The series HGL, HG pump is often a backing pump when combined with an additional substantial vacuum pump at the same time as operate singly. It is broadly utilized in vacuum smelting, vacuum drying, vacuum impregnation and substantial vacuum simulation testing,etc.
ROTARY PISTON VACUUM PUMPS
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