The KTZ series is Tsurumi’s flagship line of submersible pumps. Made with a cast iron body and high chromium cast iron impeller, the pumps can withstand the most demanding conditions found in construction, aggregate and mining applications. Versatility is increased as each model has the capability of being easily converted between high head and high volume performance with a simple change of impeller, suction cover and hose coupling.
Dual silicon carbide mechanical seals are isolated in the oil chamber to protect the seal faces against abrasion and corrosion. In addition, the seals are enclosed in Tsurumi’s original Oil Lifter to ensure reliable lubrication and cooling. This design exceeds the standard configuration of competitors and offers a longer mechanical seal life for a more reliable pump.
Pumps with a 7.5 to 15kW motor incorporate seal pressure relief ports, therefore mechanical seals are exposed only to the pressure developed by the sump submergence level. This virtually eliminates the premature wear and failure of mechanical seals in higher pressure applications.
The KTZE series is an automatic pump without cumbersome floats. An innovative electrode type relay unit built into the pump automatically starts and stops the pump to eliminate dry-running. This mechanism greatly reduces power consumption and extends operating life.
Extreme circumstances reveal true value.
With over 90 years of history, the Tsurumi Pump Brand continues to receive
worldwide support with its superior quality, exceptional durability and solid reliability.
KTZ: Tsurumi’s flagship line of heavy-duty drainage pumps
KTZE: Automatic drainage pumps with an innovative electrode type relay unit
KTD: Slurry pumps that deliver powerful agitation for discharging slurries laden with silt, earth, sand or other particulate
| Motor Output | 1.5kW | 2-2.2kW | 3-3.7kW | 5.5kW | 7.5kW | 11kW | 15kW | |
|---|---|---|---|---|---|---|---|---|
| KTZ | 2” 50mm | |||||||
| 3” 80mm | ||||||||
| 4” 100mm | ||||||||
| 6” 150mm | ||||||||
| KTZE -Automatic- |
2” 50mm | |||||||
| 3” 80mm | ||||||||
| 4” 100mm | ||||||||
| KTD -Slurry- |
2” 50mm | |||||||
| 3” 80mm | ||||||||
Tsurumi’s pumps can be combined with a seawater-resistant kit (optional) that adds a “galvanic anode” and “seawater-resistant special cast iron impeller,” and enables about two years of service. (The service period depends on operating conditions.)
Tsurumi’s pumps are applicable to high temperature liquids of up to 90°C. Pumps of the standard specification can discharge liquids of up to 40°C. However, there are many fields that need to discharge higher temperature liquids, e.g., discharging industrial water from a power plant or ironworks, or discharging hot spring water from a mine in a volcanic zone.
Tsurumi’s pumps can be manufactured to between 380 – 1000V ratings that are often required for mining applications. The pumps meet mining safety standards as they come with screened cables and motors with built-in diodes for ground-fault checks.
All of the parts of Tsurumi’s pumps that contact fluid, including the impeller, pump casing, motor frame, strainer stand, and hose coupling, can be made in 316 stainless steel. Tsurumi’s all stainless steel pump can handle corrosive fluids generated in mines or quarries, and chemical fluids of low pH value
This design assures efficient motor cooling even if the pump runs with its motor exposed to air, and also allows the overall diameter of the pump to be reduced for installation in confined spaces
Can be configured for inclined or vertical discharge, allowing for smoother installation.
Prevents water incursion due to capillary action should the cable sheath be damaged or the end of cable submerged. Also prevents moist air from infiltrating the motor housing and condensation from forming inside the housing due to temperature differences between the housing and outside air.
Prevents unexpected water incursion that can occur if the cable is damaged, by protecting the cable against the tugging and rough handling found at construction sites.
Directly cuts the motor circuit if excessive heat builds up or overcurrent occurs in the motor.
Quenching treatment is applied to parts that contact particles in pumped fluids and whose mechanical seal may wear out, to enhance surface hardness and extend shaft service life.
Isolated in the oil chamber where a clean, non-corrosive and abrasion-free lubricating environment is maintained. Compared with the water-cooled outside mechanical seal, it reduces the risk of failure caused by dry-heating and adhering matter. The silicon carbide provides 5 times higher corrosion, wear and heat resistance than the tungsten carbide. Rubber parts of the upper and lower fixing rings are made of NBR or FPM (FKM), which provides higher resistance to heat and chemicals.
Provides lubrication and cooling of the seal faces down to 1/3 of normal oil level, thus maintaining a stable shaft sealing effect and prolonging seal life longer. The Oil Lifter is Tsurumi original design.
Protect the mechanical seal from pump pressure. They also protect the seal face by discharging wear particles.
Used as a “Dust Seal”, it protects the mechanical seal from abrasive particles.
Equipped to provide a better countermeasure against wear caused by high pressure generated in the casing and improve the maintainability.
Resists wear caused by abrasive particles and enables the pump to maintain its original performance for an extended period of time.
Consists of a shaft-mounted agitator and a dedicated strainer. The agitator made of high-chromium cast iron resists wear caused by abrasive particles, and it suspends solids to assist in pumping sediments in combination with the strainer.
Consisting of an electric probe and relay unit, this enables automatic operation, reduces power consumption and extends operating life.
Contributing to reduction of power consumption, prevention of dry-running and extension of operating life.
Simply connect the pumps to a power supply for automatic operation.
By setting up multiple Tsurumi automatic pumps at different height levels, these pumps prevent damage caused by submersion in flood water resulting from heavy rain. These pumps do not require any complex setting or installation work. Installation is as easy as positioning the pumps and connecting them to a power supply. If flooding occurs and the water level increases, the pumps automatically start pumping out water.
Tsurumi has developed a unique automatic control device utilizing an electrode. It consists of an electric probe and relay unit. When the water level rises to contact the electric probe, electric continuity is produced between the electrode and the pump body, and the relay unit built into the pump turns on the pump.
The relay unit includes a timer function. The pump stops automatically in about one minute after the water surface falls below the electric probe. If the water level rises again to contact the electric probe within the run time, the pump continues to run for one more minute.
Since this mechanism eliminates dry-running, the pump can reduce power consumption by up to 40 percent compared with non-automatic pumps (Tsurumi comparison). It also prevents chattering caused by a turbulent water surface and extends operating life.
It is possible to set a lower starting water level by using an extension probe (optional accessory). The starting water level is adjustable because the extension probe can be cut to the desired length as it is made of coil spring.
The KTZ-series is a submersible three-phase cast iron high head heavy-duty drainage pump
The cast iron body with high-chromium cast iron impeller enables it to withstand demanding conditions found in construction, aggregate and mining applications. The top discharge, side flow design assures efficient motor cooling even when it operates with its motor exposed to air. The slim design allows the pump to be placed in a confined space. The discharge direction is selectable between vertical and inclined, which prevents folding or bending of the discharge hose. The pump with 7.5 to 15kW motor incorporates seal pressure relief ports that prevent the pumping pressure from applying to the shaft seal.
| Discharge Bore mm |
Model | Motor Output kW |
Phase | Starting Method |
Solids Passage mm |
Dry Weight*2 kg |
Cable Length m |
|---|---|---|---|---|---|---|---|
| 50 | KTZ21.5 | 1.5 | Three | D.O.L. | 8.5 | 34 | 8 |
| 50 | KTZ22.2 | 2.2 | D.O.L. | 8.5 | 35 | 8 | |
| 50 | KTZ23.7 | 3.7 | D.O.L.*1 | 8.5 | 60 | 8 | |
| 80 | KTZ31.5 | 1.5 | D.O.L. | 8.5 | 33 | 8 | |
| 80 | KTZ32.2 | 2.2 | D.O.L. | 8.5 | 34 | 8 | |
| 80 | KTZ33.7 | 3.7 | D.O.L.*1 | 8.5 | 60 | 8 | |
| 80 | KTZ35.5 | 5.5 | D.O.L.*1 | 8.5 | 74 | 8 | |
| 100 | KTZ43.7 | 3.7 | D.O.L.*1 | 8.5 | 60 | 8 | |
| 100 | KTZ45.5 | 5.5 | D.O.L.*1 | 8.5 | 74 | 8 | |
| 100 | KTZ47.5 | 7.5 | D.O.L.*1 | 12 | 101 | 8 | |
| 100 | KTZ411 | 11 | D.O.L.*1 | 12 | 133 | 8 | |
| 100 | KTZ415 | 15 | D.O.L.*1 | 12 | 146 | 8 | |
| 150 | KTZ67.5 | 7.5 | D.O.L.*1 | 20 | 100 | 8 | |
| 150 | KTZ611 | 11 | D.O.L.*1 | 20 | 133 | 8 | |
| 150 | KTZ615 | 15 | D.O.L.*1 | 20 | 147 | 8 |
* 1 Star-Delta available upon request
* 2 Weights excluding cable
| Model | d | A | A1 | B | D | H | W1 |
|---|---|---|---|---|---|---|---|
| KTZ21.5 | 50 | 270 | 235 | 543 | 216 | 548 | 120 |
| KTZ22.2 | 50 | 270 | 235 | 563 | 216 | 568 | 120 |
| KTZ23.7 | 50 | 342 | 283 | 675 | 252 | 637 | 150 |
| KTZ31.5 | 80 | 276 | 235 | 543 | 216 | 548 | 120 |
| KTZ32.2 | 80 | 276 | 235 | 563 | 216 | 568 | 120 |
| KTZ33.7 | 80 | 347 | 283 | 675 | 252 | 637 | 150 |
| KTZ35.5 | 80 | 358 | 306 | 719 | 258 | 688 | 150 |
| KTZ43.7 | 100 | 367 | 283 | 690 | 252 | 637 | 150 |
| KTZ45.5 | 100 | 377 | 306 | 734 | 258 | 688 | 150 |
| KTZ47.5 | 100 | 399 | 330 | 812 | 314 | 697 | 190 |
| KTZ411 | 100 | 428 | 374 | 864 | 350 | 740 | 190 |
| KTZ415 | 100 | 428 | 374 | 934 | 350 | 810 | 190 |
| KTZ67.5 | 150 | 445 | 361 | 875 | 314 | 697 | 190 |
| KTZ611 | 150 | 457 | 374 | 884 | 350 | 740 | 190 |
| KTZ615 | 150 | 457 | 374 | 954 | 350 | 810 | 190 |
The KTZE-series is a submersible three-phase automatic cast iron high head heavy-duty drainage pump
An innovative electrode type relay unit built into the pump automatically starts and stops the pump to eliminate dry-running. This mechanism greatly reduces power consumption and extends operating life. The cast iron body with high-chromium cast iron impeller enables it to withstand demanding conditions found in construction, aggregate and mining applications. The top discharge, side flow design assures efficient motor cooling even when it operates with its motor exposed to air. The slim design allows the pump to be placed in a confined space. The discharge direction is selectable between vertical and inclined, which prevents folding or bending of the discharge hose.
| Discharge Bore mm |
Model | Motor Output kW |
Phase | Starting Method |
Solids Passage mm |
Dry Weight* kg |
Cable Lengthm |
|---|---|---|---|---|---|---|---|
| 50 | KTZE21.5 | 1.5 | Three | D.O.L. | 8.5 | 39 | 8 |
| 50 | KTZE22.2 | 2.2 | D.O.L. | 8.5 | 41 | 8 | |
| 50 | KTZE23.7 | 3.7 | D.O.L. | 8.5 | 69 | 8 | |
| 80 | KTZE31.5 | 1.5 | D.O.L. | 8.5 | 38 | 8 | |
| 80 | KTZE32.2 | 2.2 | D.O.L. | 8.5 | 40 | 8 | |
| 80 | KTZE33.7 | 3.7 | D.O.L. | 8.5 | 69 | 8 | |
| 100 | KTZE43.7 | 3.7 | D.O.L. | 8.5 | 69 | 8 |
| Model | d | A | A1 | B | D | H | W1 |
|---|---|---|---|---|---|---|---|
| KTZE21.5 | 50 | 270 | 235 | 623 | 216 | 628 | 345 |
| KTZE22.2 | 50 | 270 | 235 | 643 | 216 | 648 | 355 |
| KTZE23.7 | 50 | 342 | 283 | 755 | 252 | 717 | 435 |
| KTZE31.5 | 80 | 276 | 235 | 623 | 216 | 628 | 345 |
| KTZE32.2 | 80 | 276 | 235 | 643 | 216 | 648 | 355 |
| KTZE33.7 | 80 | 347 | 283 | 755 | 252 | 717 | 435 |
| KTZE43.7 | 100 | 367 | 283 | 770 | 252 | 717 | 435 |
| #1 | KTZ | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| KTZ21.5 | KTZ22.2 | KTZ23.7 | KTZ31.5 | KTZ32.2 | KTZ33.7 | KTZ35.5 | KTZ43.7 | KTZ45.5 | KTZ47.5 | KTZ411 | ||
| PUMP | Discharge Bore mm |
50 | 80 | 100 | ||||||||
| Discharge Connection |
Hose Coupling | |||||||||||
| Solids Passage mm |
8.5 | 12 | ||||||||||
| Impeller | Semi-open | |||||||||||
| High-chromium Cast Iron | ||||||||||||
| Suction Cover |
Ductile Cast Iron | |||||||||||
| Oil Seal | Nitrile Butadiene Rubber | - | ||||||||||
| Labyrinth Ring |
- | 304 Stainless Steel | ||||||||||
| Casing | Gray Cast Iron | |||||||||||
| Shaft Seal | Dual Inside Mechanical Seals (with Oil Lifter) | |||||||||||
| Silicon Carbide | ||||||||||||
| Agitator | - | |||||||||||
| MOTOR | Type | Continuous-duty Rated, Dry-type Induction Motor | ||||||||||
| Output kW |
1.5 | 2.2 | 3.7 | 1.5 | 2.2 | 3.7 | 5.5 | 3.7 | 5.5 | 7.5 | 11 | |
| Phase | Three | |||||||||||
| Pole | 2 | |||||||||||
| Insulation | F | |||||||||||
| Starting Method |
D.O.L. | D.O.L.*2 | D.O.L. | D.O.L.*2 | ||||||||
| Motor Protector (built-in) |
CTP | |||||||||||
| Lubricant ml | 740 | 1250 | 740 | 1250 | 1100 | 1250 | 1100 | 760 | ||||
| Turbine Oil (ISO VG32) | ||||||||||||
| Frame | Gray Cast Iron | |||||||||||
| Shaft | 420 Stainless Steel | |||||||||||
| Cable m | 8 | |||||||||||
| PVC | Chloroprene Rubber |
PVC | Chloroprene Rubber |
|||||||||
| Automatic Control Device | ||||||||||||
| Dry Weight*1 kg | 34 | 35 | 60 | 33 | 34 | 60 | 74 | 60 | 74 | 101 | 133 | |
| #2 | KTZ | KTZE -Automatic- | KTD -Slurry- | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| KTZ415 | KTZ67.5 | KTZ611 | KTZ615 | KTZE21.5 | KTZE22.2 | KTZE23.7 | KTZE31.5 | KTZE32.2 | KTZE33.7 | KTZE43.7 | KTD22.0 | KTD33.0 | ||
| PUMP | Discharge Bore mm |
100 | 150 | 50 | 80 | 100 | 50 | 80 | ||||||
| Discharge Connection |
Hose Coupling | |||||||||||||
| Solids Passage mm |
12 | 20 | 8.5 | 10 | ||||||||||
| Impeller | Semi-open | |||||||||||||
| High-chromium Cast Iron | ||||||||||||||
| Suction Cover |
Ductile Cast Iron | |||||||||||||
| Oil Seal | Nitrile Butadiene Rubber | |||||||||||||
| Labyrinth Ring |
304 Stainless Steel | |||||||||||||
| Casing | Gray Cast Iron | |||||||||||||
| Shaft Seal | Dual Inside Mechanical Seals (with Oil Lifter) | |||||||||||||
| Silicon Carbide | ||||||||||||||
| Agitator | - | Ductile Cast Iron | ||||||||||||
| MOTOR | Type | Continuous-duty Rated, Dry-type Induction Motor | ||||||||||||
| Output kW |
15 | 7.5 | 11 | 15 | 1.5 | 2.2 | 3.7 | 1.5 | 2.2 | 3.7 | 2 | 3 | ||
| Phase | Three | |||||||||||||
| Pole | 2 | |||||||||||||
| Insulation | F | |||||||||||||
| Starting Method |
D.O.L.*2 | D.O.L. | ||||||||||||
| Motor Protector (built-in) |
CTP | |||||||||||||
| Lubricant ml | 820 | 760 | 820 | 740 | 1250 | 740 | 1250 | 740 | 1250 | |||||
| Turbine Oil (ISO VG32) | ||||||||||||||
| Frame | Gray Cast Iron | |||||||||||||
| Shaft | 420 Stainless Steel | |||||||||||||
| Cable m | 8 | |||||||||||||
| Chloroprene Rubber |
PVC | Chloroprene Rubber |
PVC | Chloroprene Rubber |
PVC | Chloroprene Rubber |
||||||||
| Automatic Control Device | Electrode | |||||||||||||
| Dry Weight*1 kg | 146 | 100 | 133 | 147 | 39 | 41 | 69 | 38 | 40 | 69 | 38 | 65 | ||
