Working principle and functions:
The series HGL, HG pump is actually a form of single-stage and single-cylinder rotary piston vacuum pump. It truly is enormously enhanced series H rotary piston pump and involves four patents; its basic abilities possess a great improvement.
Rotary piston vacuum pump is a kind of vacuum manufacturing gear suitable for pumping ordinary gases and condensable gases(when a gasoline ballast applied). The pump must be fitted with proper accessories if gasoline is wealthy in oxygen, explosive, corrosive to ferrous metal, chemical reactive with vacuum pump oil.
Operation principle present in operating 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, to ensure that pumping goal could 
possibly be attained.
The series HGL, HG pump may be a backing pump when combined with another high vacuum pump at the same time as operate singly. It can be broadly utilized in vacuum smelting, vacuum drying, vacuum impregnation and substantial vacuum simulation testing,and so forth.
ROTARY PISTON VACUUM PUMPS
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