Product Technology
Oil Lifter (Foreign And Domestic Patent Registered)
This original Tsurumi technology successfully improves the sealing performance of the mechanical seal (shaft seal), which serves as the heart of a submersible pump. The incorporation of Oil Lifter stabilizes and improves the lubricity and cooling action of mechanical seal so that pump operation remains stable even when oil volume decreases.
- The Oil Lifter is a lubricating device for the mechanical seal (shaft seal) that serves as the heart of a submersible pump.
- The Oil Lifter stabilizes and improves the lubricity and cooling action of the mechanical seal.
- It retains the stable sealing effect even if the lubricant falls below the rated volume. The Oil Lifter reduces the number of periodic inspection.
| Oil Inspection Cycle | Oil Replacement Cycle | Mechanical Seal Replacement Cycle |
|
|---|---|---|---|
| Tsurumi Pump with Oil Lifter |
6000 hours or 1 year | 9000 hours or 2 years | 9000 hours or 2 years |
| Tsurumi Pump without Oil Lifter |
3000 hours or 6 months | 6000 hours or 1 year | 1 year |
*Products targeted in this table are wastewater pumps only, and in addition, irregular installation (horizontal or upside-down installation) or pumps with reduction gear is excluded.
Submersible Seawater-Resistant Pumps
Tsurumi has the technology that minimizes the corrosion by seawater. Major factors that consist the seawater-resistant specifications are, "Special Cast Iron", "Galvanic Anode", and "Corrosion-Resistant Painting". It achieves an excellent corrosion-resistant performance.
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When two impellers of different materials are fitted to two shafts having the same material, the shafts have shown a quite different degree of corrosion.
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