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The Tsurumi HS3.75SL and HSZ3.75SL single-phase submersible portable drainage pumps are ideal for high-volume dewatering applications. As the latest additions to Tsurumi's best-selling HS series, they inherit the series' excellent characteristics of low head and high flow rate, perfectly meeting the specific needs of the rental market, civil engineering, and construction sectors. These submersible pumps are easy to operate, compactly designed, lightweight, and durable, offering high portability and significantly improving maintenance convenience. Wear-resistant materials are used for vulnerable parts, ensuring exceptional durability. Furthermore, Tsurumi's original agitator design effectively prevents air-lock phenomena that can occur in vortex and semi-vortex pumps, and it can also effectively stir sludge. The HSZ series is equipped with a simple float switch for automatic operation, effectively preventing dry running and reducing power consumption, providing an efficient and reliable dewatering solution.
Diagram: Internal structure and key features of Tsurumi HS/HSZ series pumps
Effectively prevents water ingress via capillary action due to damaged cable sheathing or submerged cable ends. It also prevents humid air from entering the motor casing, avoiding condensation caused by temperature differences.
Eliminates spring failure issues, ensuring a longer service life. The seal is isolated within the oil chamber, maintaining a clean, non-corrosive, and wear-free lubrication environment. Silicon carbide offers 5 times greater resistance to corrosion, wear, and heat compared to tungsten carbide.
Effectively provides lubrication and cooling to the sealing surfaces even when the oil level drops to 1/3 of the normal level, maintaining stable shaft seal performance and extending seal life. This is an original Tsurumi design.
Acts as a "dust seal," effectively protecting the mechanical seal from abrasive particles and extending the pump's service life.
Effectively prevents air-lock phenomena common in vortex and semi-vortex pumps, ensuring stable pump operation, and can also effectively stir sludge.
Standard and automatic operation types have identical performance.
50Hz Performance Curve
60Hz Performance Curve
| Discharge Diameter mm |
Model | Output Power kW |
Phase | Starting Method | Solid Passage Size mm |
Quality (Weight) kg |
Rubber Insulated Cable Length m |
||
|---|---|---|---|---|---|---|---|---|---|
| Standard Operation Type | Automatic Operation Type | Standard Operation Type | Automatic Operation Type | ||||||
| 50 | HS2.4S | HSZ2.4S | 0.4 | Single Phase | Capacitor Start | 7 | 11.3 | 11.3 | 5 |
| 50 | HS2.75S | HSZ2.75S | 0.0.75 | Single Phase | Capacitor Start | 7 | 16.4 | 16.4 | 5 |
| 80 | HS3.75S | HSZ3.75S | 0.75 | Single Phase | Capacitor Start | 7 | 16.8 | 16.8 | 5 |
| 80 | HS3.75SL | HSZ3.75SL | 0.75 | Single Phase | Capacitor Start | 7 | 19.6 | 19.6 | 5 |
・Threaded hose coupling for piping connection is available upon request.
・Weight excluding cable.
