Dry Vacuum Pump | Rotary Vane Pump | Water-ring Pump |
Dry pump cavity, oil free. | Other medium will be mixed with the vacuum pump oil, so the oil needs to be changed frequently. | The working fluid is needed, as the seal between the rotating part and the fixed part is completed by a water seal. |
The air medium does not cause any emissions and does not pollute the environment. | Oily fume is produced, which will pollute the surrounding environment. | Water is required as a medium, which will cause water pollution. |
Frictionless in the pump cavity. | Due to the abrasion, the rotary plates and exhaust valve need to be replaced. | The impeller is stained with scale and needs to be cleaned regularly. |
Excellent ultimate vacuum,the can reach 1000Pa.great performance can last for long period. | The ultimate vacuum is relatively high, and the performance decreases with the oil pollution and the abrasion of the rotary plates. | The vacuum degree is low,low work efficiency and unstable operation process. |
Medium recycle available. | The medium cannot be recycled, and corrosive medium cannot be removed. | Difficulty in media recycle. |
Easy to clean. | Complex maintenance. | High maintenance frequency. |
Persona di contatto : | liu |
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