The use of non-spring rotary vane to achieve low noise,  low vibration and long service life.

 Built-in oil check valve is used to avoid the oil return phenomenon.

 Built-in forced fed oil pump is used to ensure the long-term continous operation of the pump at atmospheric pressure.

 The use of air cooling, oil cooling, water cooling and other cooling  methods to ensure the good cooling effect, and make the long-term stable runnig of the pump as well as the stable pumping performance.

 Reasonable structure has the advantages of easy assembly and disassembly, as well as the fast and easy maintenance.