Industrial Screw Vacuum Pump Unit from China Suppliers and Factory - High Performance with Oil-Free Vane Pump
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High vacuum
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High pumping speed
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Energy saving
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Oil-free and water-free dry operation
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
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What is the limiting pressure achievable by the JZJLG vacuum unit series?
The JZJLG vacuum unit series offers two limiting pressure levels: ≤1 Pa for standard configurations and ≤0.1 Pa for high-vacuum three-stage configurations. Models such as JZJLG150-2.1, JZJLG300-2.1, and JZJLG2500-4.2 are capable of achieving the ultra-low ≤0.1 Pa threshold.
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How do I select the right JZJLG unit model for my application?
Selection should be based on your specific process requirements, including the vacuuming process, gas release characteristics, condensation behavior of non-condensable gases, and changes in intake pressure over time. It is also recommended to refer to the operating conditions of existing similar equipment to ensure optimal performance.
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What is the difference between two-stage and three-stage pump configurations?
Two-stage configurations (main pump + pre-stage pump) achieve a limiting pressure of ≤1 Pa and are suitable for general industrial vacuum applications. Three-stage configurations (main pump + middle pump + pre-stage pump) achieve ≤0.1 Pa and are designed for processes requiring deeper vacuum levels, such as precision coating or vacuum metallurgy.
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What vacuum extraction rates are available in the JZJLG series?
The JZJLG series covers a wide range of vacuum extraction rates from 70 L/S (JZJLG70-1) up to 2500 L/S (JZJLG2500-4.2), allowing users to match the unit to their required pumping speed and process volume.
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What is the total motor power range across the JZJLG unit series?
Total motor power ranges from 7 KW for the entry-level JZJLG70-1 model up to 48 KW for the high-capacity JZJLG2500-4.2 model. Power consumption scales with both the extraction rate and the number of pump stages in the configuration.
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Are the specifications in the table fixed, or can they be customized?
The table represents the recommended standard series configurations. Since actual production conditions vary significantly — including differences in intake gas composition, pressure fluctuations, and process requirements — customized configurations can be engineered based on detailed process calculations to best meet your specific operational needs.