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Greentech International (Zhangqiu) Co., Ltd is a professional supplier of vacuum pumps, offering high-quality and reliable solutions for various industrial applications. The 2BV series water ring vacuum pumps are ideal for pumping gases and steam, with a suction pressure of up to 33 mbar (ABS), equivalent to a 97% vacuum level. When using transformer oil as the operating liquid, these pumps can achieve an even higher vacuum level of 6.7 mbar (ABS), or 99%, making them a suitable replacement for traditional reciprocating vacuum pumps.
These oil ring vacuum pumps are especially useful in environments where high vacuum levels are required. However, when operating near the limit of vacuum for extended periods, it's recommended to use a cavitation protection pipe to prevent noise and protect the pump from damage. During compression operations, the maximum discharge pressure reaches 0.26 MPa (ABS), and the motor power required increases with higher pressure, so it's essential to provide accurate discharge pressure data when selecting the appropriate motor.
The 2BV2-Ex and 2BV6 series models are specifically designed for use in explosive environments, making them suitable for handling flammable or explosive gases. Their technical specifications align with those of the 2BV2 and 2BV5 series products. Additionally, the stainless steel versions of the 2BV series are ideal for applications requiring corrosion resistance or high cleanliness standards.
All internal components that come into contact with the liquid—such as the pump casing, cover, port plate, and impeller—are made from different grades of stainless steel, including SUS304 (0Cr18Ni9), SUS316 (0Cr17Ni12Mo2), and SUS316L (00Cr17Ni14Mo2). The shaft is constructed from materials like 2Cr13 or 0Cr18Ni12Mo2Ti, while mechanical seals are sourced from John Crane, with options for FPM or PTFE seal materials.
The 2BV series offers several key features:
- **Close-coupled design** for easy installation and space-saving.
- **Standard John Crane mechanical seals** for reliable performance.
- **Cavitation protection port** to reduce noise and protect the pump under near-limit vacuum conditions.
- **Aluminum bronze impeller** for high strength and wear resistance, improving the pump’s durability.
- **Unique discharge port design** to prevent overpressure and ensure optimal efficiency.
- **Y2 series motors** with IP54/IP55 protection and class F insulation.
- **Imported bearings** from reputable brands like NTN or NSK for long-lasting operation.
Below is a detailed specification table for various 2BV series models:
| Type | Suction Capacity (m³/min) | Limited Vacuum (mbar/MPa) | Motor Power (kW) | Explosion-proof Grade | Protection Grade | Pump Speed (r.p.m) | Liquid Flowrate (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 | No | IP54 | 2880 | 2 | 65 | 35 |
| 2BV2 070 | 1.33 | | 3 | No | IP54 | 2850 | 2.5 | 66 | 56 |
| 2BV2 071 | 1.83 | | 4 | No | IP54 | 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 | dIIBT4 | IP55 | 2880 | 2 | 65 | 45 |
| 2BV2 070-Ex | 1.33 | | 3 | dIIBT4 | IP55 | 2850 | 2.5 | 66 | 66 |
| 2BV2 071-Ex | 1.83 | | 4 | dIIBT4 | IP55 | 2860 | 4.2 | 72 | 77 |
| 2BV5 110 | 2.75 | 33 mbar | 4 | No | IP54 | 1450 | 6.7 | 63 | 103 |
| 2BV5 111 | 3.83 | | 5.5 | No | IP54 | 1450 | 8.3 | 68 | 117 |
| 2BV5 121 | 4.66 | | 7.5 | No | IP54 | 1450 | 10 | 69 | 149 |
| 2BV5 131 | 6.66 | | 11 | No | IP54 | 1430 | 15 | 73 | 205 |
| 2BV5 161 | 8.33 | | 15 | No | IP54 | 970 | 20 | 74 | 331 |
| 2BV6 110 | 2.75 | 33 mbar | 4 | dIIBT4 | IP55 | 1450 | 6.7 | 63 | 153 |
| 2BV6 111 | 3.83 | | 5.5 | dIIBT4 | IP55 | 1450 | 8.3 | 68 | 208 |
| 2BV6 121 | 4.66 | | 7.5 | dIIBT4 | IP55 | 1450 | 10 | 69 | 240 |
| 2BV6 131 | 6.66 | | 11 | dIIBT4 | IP55 | 1430 | 15 | 73 | 320 |
| 2BV6 161 | 8.33 | | 15 | dIIBT4 | IP55 | 970 | 20 | 74 | 446 |
With their advanced design, reliable performance, and wide range of applications, Greentech's 2BV series vacuum pumps are a trusted choice for industries requiring efficient and durable vacuum solutions.