Development Vacuum Equipment Co., Ltd.

China Manufacturer with main products: Roots Vacuum Pump, Rotary Piston Vacuum Pump, Water (Liquid) Ring Vacuum Pump, Rotary Vane Vacuum Pump, Dry Screw Vacuum Pump, Vacuum System,...

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vacuum drying system

Supply Ability: 1,000 Set/Sets per Month
Payment Terms: T/T, Western Union

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Export Markets: North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, Mid East, Eastern Asia, Western Europe

Quick Details

  • Brand Name: DVE
  • Model Number: J2ZH300-43
  • Usage: Oil
  • Power: Electric
  • Standard or Nonstandard: Standard



Model : J2ZH300-43 
Main Pump 50Hz : ZJ-300 
Backing Pump : H-25DVA
Middle Pump 50Hz :  ZJ-75 
Displacement(L/s) : 300 

Ultimate Partial Pressure (Pa) :  0.02 
Ultimate Total Pressure(Pa) : 0.5 
Motor Power(kW) : 8.4
Suction(mm) :  150 
Discharge(mm) : 40

: 1, If roots vacuum pump is operated at 60Hz, the displacement should be increased to1.2times.2, For the ZJP roots vacuum pumps with bypass valve, the unit model must be changed to J2ZPH, other parameters are unchanged.

Roots Rotary Piston Pump System is made up with the Roots Vacuum Pump and Rotary Piston Vacuum Pump in series connection. Rotary Piston Vacuum Pump is used as the pre-vacuum pump and the backing vacuum pump of the Roots Vacuum Pump, while the Roots Vacuum Pump is the main vacuum pump. The selection of displacement ratio, between the Roots Vacuum Pump and the Rotary Piston Vacuum Pump, is mainly referrd to the vacuum value of the vacuum system under long term running; when working in low vacuum, it is advised to select small displacement ratio(2: 1 to 4: 1); If working in medium or high vacuum, the bigger displacement ratio(4: 1to10: 1)should be preferred.


1. High vacuum, high exhausting efficiency in medium or high vacuum, wide working range, obvious energy-saving results.
2. Integrated rack, compact structure, small required space.
3. High automation, simple operation, easy maintenance, safe, reliable and durable running.
4. To customize a special pump system as per the specific needs of the end user.


Widely used in vacuum coating, vacuum metallurgy, vacuum heat treatment, vacuum drying, vacuum impregnation, vacuum strainer, poly-silicon production, aerospace simulation and so on.

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