China Suppliers Factory Screw Water Ring Vacuum Pump Unit for Enhanced Pre-Vacuum Performance
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Product Parameters
| Unit Model | Pump Model | Draw Rate (L/S) |
Absolute Vacuum (Pa) |
Total Power (KW) |
|
| Main Pump | Pre-stage Pump | ||||
| JZJ2B30-1 | ZJP30 | 2BV5110 | 30 | 267 | 5.5 |
| JZJ2B70-1 | ZJP70 | 2BV5111 | 70 | 7 | |
| JZJ2B150-1 | ZJP150 | 2BV5131 | 150 | 14 | |
| JZJ2B300-2 | ZJP300 | 2BV5161 | 300 | 19 | |
| JZJ2B300-1 | ZJP300 | 2BE1 202 | 300 | 26 | |
| JZJ2B600-2 | ZJP600 | 2BE1 203 | 600 | 44.5 | |
| JZJ2B600-1 | ZJP600 | 2BE1 252 | 600 | 52.5 | |
| JZJ2B70-2.1 | ZJP70 | ZJP30/2BV5110 | 70 | 25 | 7 |
| JZJ2B150-2.1 | ZJP150 | ZJP70/2BV5111 | 150 | 10 | |
| JZJ2B300-2.1 | ZJP300 | ZJP150/2BV5131 | 300 | 18 | |
| JZJ2B600-2.2 | ZJP600 | ZPJ300/2BV5161 | 600 | 26.5 | |
| JZJ2B1200-2.2 | ZJ1200 | ZJP600/2BE1203 | 1200 | 55.5 | |
| JZJ2B1200-2.1 | ZJ1200 | ZJP600/2BE1252 | 1200 | 63.5 | |
| JZJ2B2500-2.1 | ZJ2500 | ZJ1200/2BE1303 | 2500 | 133 | |
| JZJ2B5000-4.1 | ZJ5000 | ZJ1200/2BE1303 | 5000 | 176 | |
| JZJ2B70-2.1.1 | ZJP70 | ZJP30/ZJP30/2BV5110 | 70 | 0.5 | 8.5 |
| JZJ2B150-2.2.1 | ZJP150 | ZJP70/ZJP30/2BV5110 | 150 | 10 | |
| JZJ2B300-2.2.1 | ZJP300 | ZJP150/ZJP70/2BV5111 | 300 | 14 | |
| JZJ2B600-2.2.1 | ZJP600 | ZJP300/ZJP150/2BV5131 | 600 | 23.5 | |
| JZJ2B1200-2.2.2 | ZJ1200 | ZJP600/ZJP300/2BV5161 | 1200 | 37.5 | |
| JZJ2B1200-2.2.1 | ZJ1200 | ZJP600/ZJP300/2BE1202 | 1200 | 51.5 | |
| JZJ2B2500-2.2.1 | ZJ2500 | ZJ1200/ZJP600/2BE1252 | 2500 | 85.5 | |
| JZJ2B2500-4.2.1 | ZJ2500 | ZJP600/ZJP300/2BE1202 | 2500 | 55.5 | |
| JZJ2B5000-4.2.1 | ZJ5000 | ZJ1200/ZJP600/2BE1252 | 5000 | 118.5 | |
📋 Important Notes
- 1 The series in the table represents the recommended standards. Due to the varying working conditions in actual production applications, the gas intake and pressure will undergo many changes. Therefore, during the selection process, calculations or reference to the usage of existing equipment should be conducted based on the actual vacuum extraction process, gas release process, condensation of non-volatile gases, time variations of the intake pressure, etc.
- 2 The technical indicators of the single pump are detailed in the respective pump parameter tables.
- 3 The maximum intake pressure refers to the highest pressure that the main pump can start at. If it operates for a long time at a pressure higher than this, it will cause the main pump to overload.
- 4 If the vacuum pump motor, electrical contact vacuum gauge/pressure transmitter, and electrical control cabinet need to be explosion-proof, please specify during the order. The 2BV5 water ring vacuum pump in the table should be correspondingly changed to the 2BV6 series.
❓ Frequently Asked Questions
Q
What does the unit model naming convention (e.g., JZJ2B300-2) represent?
A
The unit model designation encodes the pump series (JZJ2B), the draw rate capacity (e.g., 300 L/S), and the configuration stage number (e.g., -2 for a two-stage pre-pump arrangement). The suffix also indicates the specific pre-stage pump combination used in the unit.
Q
What is the significance of the absolute vacuum values (267 Pa, 25 Pa, and 0.5 Pa) listed in the table?
A
These values represent the ultimate absolute vacuum achievable by each unit configuration. Single-stage pre-pump units reach approximately 267 Pa, two-stage configurations achieve around 25 Pa, and three-stage configurations can reach as low as 0.5 Pa — suitable for high-vacuum process applications.
Q
When should I choose a multi-stage pre-pump configuration over a single-stage unit?
A
Multi-stage pre-pump configurations are recommended when your process requires a deeper vacuum level. For example, if your application demands absolute pressures below 25 Pa, a three-stage configuration (reaching 0.5 Pa) would be more appropriate than a single-stage unit limited to 267 Pa.
Q
What happens if the main pump operates above its maximum intake pressure for extended periods?
A
Operating the main pump above its maximum intake pressure for prolonged periods will cause the pump motor to overload. This can result in overheating, increased wear, reduced service life, and potential equipment failure. It is critical to ensure the system operates within the specified pressure range during normal production.
Q
How do I select the right unit for my specific vacuum process requirements?
A
Selection should be based on a thorough analysis of your actual process conditions, including the required draw rate (L/S), target vacuum level (Pa), gas release characteristics, condensation of non-volatile gases, and how intake pressure varies over time. It is recommended to perform engineering calculations or reference existing similar equipment installations before finalizing the unit model.
Q
Can these vacuum pump units be configured for use in explosive or hazardous environments?
A
Yes. If explosion-proof requirements apply to the motor, electrical contact vacuum gauge, pressure transmitter, or electrical control cabinet, this must be specified at the time of ordering. In such cases, the 2BV5 series water ring vacuum pumps listed in the table must be replaced with the equivalent 2BV6 explosion-proof series.