Greentech International (Zhangqiu) Co., Ltd is a leading supplier of professional vacuum pumps. The 2BV series water ring vacuum pumps are designed for efficient pumping of gases and steam, with a suction pressure reaching as low as 33 mbar (ABS), equivalent to 97% vacuum. When using transformer oil as the operating fluid, these pumps can achieve an even higher vacuum level of 6.7 mbar (ABS), or 99%, making them ideal replacements for traditional reciprocating vacuum pumps. For long-term operation near the maximum vacuum, it's recommended to install a cavitation protection system to reduce noise and protect the pump.
These pumps can also function as compressors, with a maximum discharge pressure of up to 0.26 MPa (ABS). The required motor power increases with the discharge pressure, so it's essential to provide this information when selecting the appropriate model. The 2BV2-Ex and 2BV6 series are specifically designed for use in explosive environments, offering the same technical specifications as their non-explosion-proof counterparts.
The 2BV stainless steel models are suitable for corrosive or high-purity applications. Key components such as the pump casing, impeller, and port plate are made from materials like SUS304, SUS316, and SUS316L, while the shaft is constructed from 2Cr13 or 0Cr18Ni12Mo2Ti. Mechanical seals from John Crane are available in FPM or PTFE options for enhanced performance.
Key features of the 2BV series include:
- A compact design that saves space and simplifies installation.
- Standard use of John Crane mechanical seals for reliability.
- A built-in cavitation protection port to prevent damage during prolonged operation at high vacuum levels.
- An aluminum bronze impeller for durability and improved erosion resistance.
- A unique discharge port design that prevents overpressure and ensures optimal efficiency.
- Motors from the Y2 series with IP54/IP55 protection ratings and insulation class F.
- High-quality NTN or NSK bearings for smooth operation.
Below is a detailed specification table:
| Type | Suction Capacity (m³/min) | Limited Vacuum (mbar/MPa) | Motor Power (kW) | Explosion-Proof Grade | Protection Class | Pump Speed (r.p.m) | Liquid Flow Rate (L/min) | Noise (dB(A)) | Weight (kg) |
|--------------|---------------------------|----------------------------|------------------|----------------------|------------------|---------------------|--------------------------|---------------|-------------|
| 2BV2 060 | 0.45 | 33 mbar (-0.098 MPa) | 1.1 | No | IP54 | 2880 | 2 | 62 | 31 |
| 2BV2 061 | 0.86 | | 1.5 | | | 2880 | 2 | 65 | 35 |
| 2BV2 070 | 1.33 | | 3 | | | 2850 | 2.5 | 66 | 56 |
| 2BV2 071 | 1.83 | | 4 | | | 2860 | 4.2 | 72 | 65 |
| 2BV2 060-Ex | 0.45 | | 1.1 | dIIBT4 | IP55 | 2880 | 2 | 62 | 39 |
| 2BV2 061-Ex | 0.86 | | 1.5 | | | 2880 | 2 | 65 | 45 |
| 2BV2 070-Ex | 1.33 | | 3 | | | 2850 | 2.5 | 66 | 66 |
| 2BV2 071-Ex | 1.83 | | 4 | | | 2860 | 4.2 | 72 | 77 |
| 2BV5 110 | 2.75 | | 4 | No | IP54 | 1450 | 6.7 | 63 | 103 |
| 2BV5 111 | 3.83 | | 5.5 | | | 1450 | 8.3 | 68 | 117 |
| 2BV5 121 | 4.66 | | 7.5 | | | 1450 | 10 | 69 | 149 |
| 2BV5 131 | 6.66 | | 11 | | | 1430 | 15 | 73 | 205 |
| 2BV5 161 | 8.33 | | 15 | | | 970 | 20 | 74 | 331 |
| 2BV6 110 | 2.75 | | 4 | dIIBT4 | IP55 | 1450 | 6.7 | 63 | 153 |
| 2BV6 111 | 3.83 | | 5.5 | | | 1450 | 8.3 | 68 | 208 |
| 2BV6 121 | 4.66 | | 7.5 | | | 1450 | 10 | 69 | 240 |
| 2BV6 131 | 6.66 | | 11 | | | 1430 | 15 | 73 | 320 |
| 2BV6 161 | 8.33 | | 15 | | | 970 | 20 | 74 | 446 |
With a wide range of models and configurations, the 2BV series offers flexibility for various industrial applications, including vacuum filtration, disinfection, distillation, and more. Whether you need standard or explosion-proof versions, Greentech provides reliable and high-performance vacuum solutions tailored to your specific needs.
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