Operating principle and features:
The series HGL, HG pump is usually a type of single-stage and single-cylinder rotary piston vacuum pump. It is actually drastically improved series H rotary piston pump and includes 4 patents; its common capabilities possess a fantastic improvement.
Rotary piston vacuum pump is actually a sort of vacuum production products ideal for pumping ordinary gases and condensable gases(when a gasoline ballast applied). The pump should be fitted with acceptable accessories if fuel is rich in oxygen, 
explosive, corrosive to ferrous metal, chemical reactive with vacuum pump oil.
Operation principle display 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 altered repetitively, so that pumping goal could possibly be accomplished.
The series HGL, HG pump is often a backing pump when mixed with a different high vacuum pump as well as operate singly. It truly is extensively utilized in vacuum smelting, vacuum drying, vacuum impregnation and high vacuum simulation testing,and so forth.
ROTARY PISTON VACUUM PUMPS
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