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Tsurumi's B and BZ series submersible sewage pumps are heavy-duty solutions designed for challenging wastewater environments. Leveraging over a century of Tsurumi's expertise, these pumps set new industry standards for solids passage, operational reliability, and energy efficiency. They are widely applicable in industrial settings, municipal water treatment, flood control, irrigation, and recreational facilities, ensuring stable system operation and significantly reducing long-term maintenance costs.
The Tsurumi B series pumps are time-tested, standard heavy-duty submersible sewage pumps. Renowned for their exceptional solids handling capability and reliable performance, they feature a specially designed channel impeller to minimize blockages caused by solids and fibrous materials. The B series offers a diverse range of discharge diameters, from 50mm to 300mm, with a wide power output range from 0.4kW to 75kW. It also includes high-head models and single-phase BP types, capable of meeting various large-flow pumping demands, especially for energy-efficient building services and high-head applications.
The BZ series pumps are high-performance products developed by Tsurumi specifically for handling high-concentration solid wastewater. They are equipped with wide channels exceeding 3 inches (approx. 76.2mm) in diameter and enclosed single/dual-channel impellers, maximizing the reduction of clogging issues. The BZ series excels in high pumping power ranges from 22kW to 75kW, not only setting new standards for pumping efficiency but also offering superior energy efficiency. Discharge diameters range from 80mm to 350mm. When used with Tsurumi's guide rail accessory, installation and maintenance are extremely convenient.
Effectively prevents water ingress due to cable damage or submersion, avoiding moisture from entering the motor housing and preventing internal condensation.
Equipped with a built-in thermal protector (7.5kW and below) or a miniature thermal protector (11kW and above) that automatically cuts off power when the motor overheats or is overloaded, ensuring equipment safety.
Isolated within the oil chamber, providing a clean, non-corrosive lubrication environment. Compared to traditional seals, they offer significantly improved resistance to corrosion, abrasion, and heat, extending service life.
An original Tsurumi design that effectively lubricates and cools the mechanical seals even at low oil levels, ensuring the stability of the shaft seal and extending its lifespan.
The B series uses a channel-like impeller structure to reduce the risk of solid clogging. The BZ series features wide channels and enclosed impellers for maximum anti-clogging capability.
Equipped on some models (18.5kW and above), it can instantly detect water ingress into the oil chamber and issue an alarm via an external control panel, preventing potential issues before they occur.
Protects the mechanical seal from pump pressure and expels wear particles, further ensuring the integrity of the sealing surfaces.
Some models (e.g., 150B475) are equipped with a labyrinth ring and wear plate/wear ring, effectively resisting wear, improving maintainability, and reducing maintenance costs.
Semi-open, Single Channel
Semi-open, Dual Channel
Semi-open, Dual Channel (High Head)
Enclosed, Dual Channel
BZ Series Enclosed Channel Impeller
BZ Series Wide Channel (Max 90mm)
| Discharge Diameter (mm) | Output Power (kW) | 0.4 | 0.75 | 1.5 | 2.2 | 3.7 | 5.5 | 7.5 | 11 | 15 | 18.5 | 22 | 37 | 75 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2” 50mm | ★ | ★ | ||||||||||||
| 3” 80mm | ☆ | ☆ | ● | ● | ● | ● | ||||||||
| 4” 100mm | ● | ● | ● | ● | ||||||||||
| 6” 150mm | ||||||||||||||
| 8” 200mm | ||||||||||||||
| 10” 250mm | ||||||||||||||
| 12” 300mm |
| Discharge Diameter (mm) | Output Power (kW) | 1.5 | 2.2 | 3.7 | 5.5 | 7.5 | 11 | 15 | 22 | 30 | 37 | 45 | 55 | 75 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 3” 80mm | ||||||||||||||
| 4” 100mm | ★ | |||||||||||||
| 8” 200mm | ||||||||||||||
| 10” 250mm | ★ | ★ | ★ | ★ | ★ | ★ | ||||||||
| 12” 300mm | ★ | ★ | ★ | ★ | ★ | ★ | ||||||||
| 14” 350mm | ☆ | ☆ | ☆ | ☆ | ☆ | ☆ |
