Water circulating vacuum pumps are designed to operate with water or other liquids that have similar chemical and physical properties to water. These pumps are commonly used in laboratory and small-scale industrial applications, offering advantages like simple maintenance, isothermal gas compression, and reliable operation without the need for lubrication. The ambient temperature for operation is typically limited to 40°C or less, and regular water replacement is recommended to maintain optimal vacuum conditions, especially when handling corrosive gases.
Key Points Explained:
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Allowed Medium
- The pump can use water or liquids with properties similar to water. This means the liquid should have comparable viscosity, density, and chemical stability to ensure proper sealing and efficient operation.
- Why does this matter for purchasers? Using incompatible liquids could damage the pump or reduce its efficiency, leading to higher maintenance costs.
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Pump Design & Operation
- The pump is a single-stage double-suction axial open vortex shell centrifugal pump, installed horizontally.
- The drive machine (motor or internal combustion engine) can be positioned on either side for flexibility in setup.
- How does this impact lab workflows? The compact design and high revolution speed allow for direct motor connection, saving space and reducing mechanical complexity.
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Key Advantages
- Simple structure with low precision requirements – Easier and cheaper to manufacture and maintain.
- Isothermal gas compression – Minimizes temperature fluctuations, which is crucial for sensitive applications like biochemistry or food processing.
- No lubrication needed – The water seal eliminates the need for oil, reducing contamination risks in clean environments.
- Stable and reliable operation – Ideal for continuous use in research and industrial settings.
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Maintenance Considerations
- Regular water replacement is necessary to maintain vacuum efficiency, especially when pumping corrosive gases. Dirty or contaminated water can degrade performance.
- What’s the long-term cost implication? Frequent water changes may be needed in corrosive environments, increasing operational effort but preventing costly repairs.
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Environmental & Usage Limits
- Ambient temperature ≤ 40°C – Higher temperatures can affect pump efficiency and longevity.
- Inlet pressure ≤ 0.03 MPa – Below this threshold, sealing pipe parts don’t require additional structural design, simplifying installation.
- Why should purchasers note this? Operating outside these limits could void warranties or cause premature failure.
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Typical Applications
- Labs, universities, and industries like chemical, pharmaceutical, food processing, and biotechnology.
- Is this pump right for your needs? If your work involves small-scale vacuum processes with water-compatible media, this pump offers a cost-effective, low-maintenance solution.
For optimal performance, always use clean water or approved substitutes and adhere to temperature and pressure guidelines. This ensures longevity and reliability, making the pump a practical investment for routine lab and industrial use.
Summary Table:
| Aspect | Details |
|---|---|
| Allowed Medium | Water or liquids with similar viscosity, density, and chemical stability. |
| Pump Design | Single-stage double-suction axial open vortex shell centrifugal pump. |
| Key Advantages | Simple structure, isothermal compression, no lubrication, stable operation. |
| Maintenance | Regular water replacement needed, especially for corrosive gases. |
| Operational Limits | Ambient temperature ≤ 40°C, inlet pressure ≤ 0.03 MPa. |
| Applications | Labs, chemical, pharmaceutical, food processing, biotechnology. |
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