Comparison of the characteristics of submersible pumps, long-shaft submersible pumps, and vertical self-priming pumps
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Comparison of the characteristics of submersible pumps, long-shaft submersible pumps, and vertical self-priming pumps| Parameter | Submersible Pump | Long-Shaft Submersible Pump | Vertical Self-Priming Pump |
|-----------|------------------|----------------------------|--------------------------|
| Cost | Includes coupling device; higher cost | Highest pump purchase cost | Lower cost |
| Installation | Low precision requirements; coupling device requires special installation | High precision requirements; base needs to be firmly fixed | Moderate precision requirements; base not necessarily fixed |
| Protection rating | IP68; high requirements for motor/cable sealing | IP54 or IP55; standard explosion-proof or non-explosion-proof | IP54 or IP55; standard explosion-proof or non-explosion-proof |
| Maintenance | Requires special coupling device; high maintenance costs; motor replacement needed if sealing fails | Higher maintenance costs; difficult to maintain | Lower maintenance costs; easy to maintain |
| Installation materials | Steel structure frame for coupling device required; basically no additional materials needed except for inlet pipes | Basically no additional installation materials needed | Minimal additional installation materials required |
| Application scope | Transporting turbid wastewater with solid particles and various long fibers, pH 4–10, sludge, rainwater, etc.; medium temperature not exceeding 60°C | Used for transporting neutral or corrosive liquids, clean liquids, or liquids containing solid particles; operating temperature range –20–125°C; particle diameter cannot be too large | Used for transporting neutral or corrosive liquids, clean liquids, or liquids containing solid particles; operating temperature range –20–125°C; particle diameter cannot be too large |It is suitable for a variety of medium conditions; in cases with high acidity or alkalinity, structures made of non-metallic materials can be used. A high particle content is permissible, and particles with a diameter of over 20 mm can be utilized, as long as they are insoluble in the liquid. In summary, self-priming pumps can be used in various operating conditions and represent a good choice; submersible pumps can be selected based on the specific requirements of the application, while submersed pumps should be those designed for continuous operation and long-term installation in sewage. Shanghai Shengou Pump Valve Co., Ltd. 021-54148004