Working principle and capabilities:
The series HGL, HG pump is a kind of single-stage and single-cylinder rotary piston vacuum pump. It truly is enormously improved series H rotary piston pump and consists of four patents; its common abilities have a excellent improvement.
Rotary piston vacuum pump is really a kind of vacuum manufacturing products suitable for pumping ordinary gases and condensable gases(when a fuel ballast employed). The pump has to be fitted with acceptable add-ons if gas 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 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, so that pumping goal can be attained.
The series HGL, HG pump 
can be a backing pump when combined with an additional high vacuum pump too as operate singly. It is actually broadly used in vacuum smelting, vacuum drying, vacuum impregnation and high vacuum simulation testing,etc.
ROTARY PISTON VACUUM PUMPS
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