I. Overview
The JZJG series Roots screw dry vacuum unit consists of a ZJ type Roots pump as the main pump and an HZG series screw vacuum pump as the preliminary pump, forming a dry oil-free vacuum unit. After the preliminary screw vacuum pump operates, the vacuum gauge and vacuum relay control the start-up of the Roots pump.
II. Key Features and Benefits:
No oil inside the pump cavity, ensuring no contamination to the system being pumped, resulting in clean vacuum.
2. Oil-free pump cavity, making solvent recovery extremely easy.
3. The rotor pump and screw pump cavities are both nickel-plated or treated with a Hastelloy coating, capable of extracting
Excluding steam, solvent gases, and various corrosive media.
4. As both the main pump and the preliminary pump are oil-free dry vacuum pumps, there is no discharge of waste water or oil.
Environmentally pollution-free.





































