Operating principle and options:
The series HGL, HG pump is actually a sort of single-stage and single-cylinder rotary piston vacuum pump. It truly is enormously enhanced series H rotary piston pump and incorporates 4 patents; its standard capabilities possess a great improvement.
Rotary piston vacuum pump is actually a type of vacuum manufacturing products suitable for pumping ordinary gases and condensable gases(whenever a gasoline ballast used). The pump must be fitted with acceptable equipment if gas is rich 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 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 modified repetitively, in order that pumping objective may be attained.
The series HGL, HG pump 
can be a backing pump when mixed with one more substantial vacuum pump at the same time as operate singly. It can be extensively used in vacuum smelting, vacuum drying, vacuum impregnation and large vacuum simulation testing,etc.
ROTARY PISTON VACUUM PUMPS
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