China Industrial Screw Vacuum Pump Unit by Leading Suppliers and Factory for Enhanced Vacuum Solutions
01
High vacuum
Ultimate vacuum ≤ 1Pa
02
High pumping speed
Pumping capacity 70L/S - 20000L/S
03
Energy saving
Motor power 5.5KW - 180KW
04
Oil-free and water-free dry operation
Oil-free and water-free dry operation, environmentally friendly and emission reduction, 100% solvent recovery
Product Parameters
| Unit Model | Limiting Pressure (Pa) | Vacuum Extraction Rate (L/S) | Main Pump | Middle Pump | Pre-stage Pump | Total Motor Power (KW) |
|---|---|---|---|---|---|---|
| JZJLG70-1 | ≤1 Pa | 70 | ZJP70 | -- | LGB50 | 7 |
| JZJLG150-2 | 150 | ZJP150 | -- | LGB80 | 10.5 | |
| JZJLG150-1 | 150 | ZJP150 | -- | LGB120 | 14 | |
| JZJLG300-1 | 300 | ZJP300 | -- | LGB200 | 22.5 | |
| JZJLG300-2A | 300 | ZJP300 | -- | LGB150 | 19 | |
| JZJLG300-2B | 300 | ZJP300 | -- | LGB120 | 15 | |
| JZJLG600-2 | 600 | ZJP600 | -- | LGB200 | 26 | |
| JZJLG150-2.1 | ≤0.1 Pa | 150 | ZJP150 | ZJP70 | LGB50 | 10 |
| JZJLG300-2.1 | 300 | ZJP300 | ZJP150 | LGB120 | 18 | |
| JZJLG600-2.2 | 600 | ZJP600 | ZJP300 | LGB150 | 26.5 | |
| JZJLG1200-2.2 | 1200 | ZJ1200 | ZJP600 | LGB200 | 37 | |
| JZJLG2500-4.2 | 2500 | ZJ2500 | ZJP600 | LGB200 | 48 |
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Explanation
The table represents the recommended standard series. Due to the varying working conditions in actual production applications, the intake gas and pressure will undergo many changes. Therefore, during the selection process, calculations should be conducted based on the actual vacuuming process, gas release process, condensation of non-condensable gases, changes in intake pressure over time, etc., or the selection should be made by referring to the usage conditions of existing equipment.
❓ Frequently Asked Questions
Q What does the limiting pressure (Pa) indicate in the JZJLG vacuum unit series?
The limiting pressure refers to the lowest achievable pressure the vacuum unit can reach under ideal conditions. Models in this series offer two limiting pressure levels: ≤1 Pa for standard vacuum applications and ≤0.1 Pa for high-vacuum applications requiring more precise pressure control.
Q What is the difference between models with a limiting pressure of ≤1 Pa and ≤0.1 Pa?
Models with ≤1 Pa (e.g., JZJLG70-1 to JZJLG600-2) are designed for general vacuum applications and typically use only a main pump and a pre-stage pump. Models with ≤0.1 Pa (e.g., JZJLG150-2.1 to JZJLG2500-4.2) achieve deeper vacuum levels by incorporating an additional middle pump in the pumping system, enabling a three-stage pumping configuration.
Q How should I select the correct JZJLG vacuum unit model for my application?
Selection should be based on your actual process requirements, including the required vacuum level, the volume of gas to be evacuated, gas release characteristics, the presence of non-condensable gases, and how intake pressure changes over time. It is recommended to perform detailed calculations or consult with our technical team, and to reference the operating conditions of similar existing equipment.
Q What is the vacuum extraction rate, and why is it important?
The vacuum extraction rate (measured in L/S — liters per second) indicates how quickly the unit can remove gas from a system. A higher extraction rate means faster pump-down times, which is critical in processes requiring rapid cycling or large chamber volumes. Available extraction rates in this series range from 70 L/S up to 2500 L/S.
Q What types of pumps are used in the JZJLG vacuum unit system?
The JZJLG series uses a combination of ZJP/ZJ series Roots vacuum pumps as the main and middle pumps, and LGB series liquid ring vacuum pumps as the pre-stage (backing) pumps. This combination ensures efficient, stable, and reliable vacuum performance across a wide range of industrial applications.
Q Are the specifications in the table fixed, or can the units be customized?
The table represents the recommended standard series configurations. Since actual working conditions vary — including differences in gas composition, intake pressure fluctuations, and process requirements — customized configurations can be designed to meet specific application needs. Please consult with our engineering team for tailored solutions.