China Suppliers Factory Screw Water Ring Vacuum Pump Unit for Enhanced 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 | |
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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.
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Frequently Asked Questions
Q
What does the unit model designation (e.g., JZJ2B300-2) indicate?
A
The unit model designation encodes key configuration information. "JZJ2B" identifies the product series (Roots + water ring vacuum unit), the number following indicates the draw rate (e.g., 300 L/S), and the suffix (e.g., -2 or -2.1) describes the number of pump stages and configuration type in the pre-stage pump assembly.
Q
How should I select the correct unit model for my application?
A
Selection should be based on your actual vacuum extraction process requirements, including the required draw rate (L/S), target absolute vacuum level (Pa), gas release characteristics, condensation of non-volatile gases, and time variations of intake pressure. It is recommended to perform engineering calculations or reference existing equipment usage under similar conditions rather than relying solely on the standard table values.
Q
What is the difference between units achieving 267 Pa, 25 Pa, and 0.5 Pa absolute vacuum?
A
The difference lies in the number of pump stages in the pre-stage pump configuration. Units achieving 267 Pa use a single-stage water ring pump as the pre-stage pump. Units achieving 25 Pa use a two-stage configuration (one Roots pump + one water ring pump). Units achieving 0.5 Pa use a three-stage configuration (two Roots pumps + one water ring pump), providing progressively deeper vacuum levels at the cost of additional power consumption.
Q
What happens if the main pump operates above its maximum intake pressure for extended periods?
A
Operating the main pump continuously at pressures above the specified maximum intake pressure will cause the main pump motor to overload. This can lead to excessive heat generation, accelerated wear of internal components, motor burnout, and ultimately premature failure of the pump unit. It is critical to ensure the system pressure remains within the rated operating range during sustained operation.
Q
When is an explosion-proof specification required, and what changes does it involve?
A
An explosion-proof specification is required when the operating environment contains flammable gases, vapors, or dust that could pose an ignition risk. In such cases, the vacuum pump motor, electrical contact vacuum gauge or pressure transmitter, and the electrical control cabinet must all meet explosion-proof standards. Specifically, the 2BV5 series water ring vacuum pump must be replaced with the equivalent 2BV6 series. This requirement must be clearly stated at the time of ordering.
Q
Where can I find detailed technical specifications for individual pumps used in these units?
A
Detailed technical indicators for each individual pump — including the ZJP series Roots pumps, ZJ series Roots pumps, 2BV5/2BV6 water ring vacuum pumps, and 2BE1 series water ring vacuum pumps — are provided in their respective pump parameter tables. Please refer to the individual pump datasheets or contact our technical team for comprehensive performance curves and specifications.