Features and uses 1. Low noise (high-precision dynamic balancing.) Overload protection type can be realized 
 (Relief valve setting). 3. A wide range of pressure greater pumping speed (must be used in tandem with a pump, such as the spin 
 Vane pumps, piston pumps, water ring pumps, oil ring pump). 4. Be pumping high boiling point working fluid (gas protection device settings) 
 . 5. Detection of convenience (the intake and exhaust opening has a detection interface). 6. Being pumped gas containing dust and water vapor 
 Insensitive. 7. Drive power is small. 8. The pump is widely used in metallurgy, chemical, textile, electronics and other fields.