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TSURUMI KTZ622 Submersible Dewatering Pump (150mm, 22kW, 3-Phase)

Brand: TSURUMI
Manufacturer model number: KTZ622
Order code: Y8EY58V
MOQ: 1 件
Supply status: In Stock
Selected configuration: Standard item

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The TSURUMI KTZ622 is a heavy-duty submersible dewatering pump from Tsurumi's flagship KTZ series (officially classed as a general construction pump). It has a 150 mm (6-inch) discharge and a 22 kW three-phase, 2-pole motor. A cast iron body and a semi-open high-chromium cast iron impeller make it well suited to abrasive site water on construction sites, in aggregate quarries and in mines. With a maximum capacity of 4,000 L/min, the KTZ622 is the highest-volume model in the KTZ range.

Selection note: the KTZ622 is a dewatering pump for muddy site water (up to 10% dry matter), not a slurry pump. It has no agitator and is not suitable for settled sludge or dense sand slurry; for that duty, choose the agitator-equipped KTD series, such as the KTD33.7. The KTZ422 uses the same 22 kW motor with a 100 mm discharge: it reaches a higher maximum head (71 m) but moves less water (up to 2,750 L/min). Choose the KTZ622 when volume is the priority and the KTZ422 when head is. The KTZ622 is a non-automatic model with no built-in level control.

Key features

Top-discharge, side-flow design: keeps the motor cooled even when it runs exposed to air, and gives a slim body that fits confined spaces. For continuous running, keep the water level at or above 330 mm (W1).
Multi-directional hose coupling: the discharge can be set vertical or inclined, so the hose does not fold or kink.
High-chromium cast iron semi-open impeller: resists wear from abrasive particles. The shaft is quench-hardened where it contacts particles.
Dual inside mechanical seals: silicon carbide (SiC) faces sit in the oil chamber, isolated from abrasion and corrosion. Tsurumi states SiC offers about 5 times the corrosion, wear and heat resistance of tungsten carbide.
Oil Lifter (Tsurumi original): keeps the seal faces lubricated and cooled even when the oil drops to about one-third of the normal level.
Seal pressure relief ports and 304 stainless steel labyrinth ring: on 7.5–22 kW models, the relief ports mean the mechanical seals only see the submergence pressure, not the pumping pressure.
Built-in miniature thermal protector (MTP): cuts the motor circuit on overheating or overcurrent.
Anti-wicking cable entry and cable clip: stops water creeping into the motor along the cable by capillary action if the sheath is damaged, while the clip protects the cable against pulling.

Applications

Construction sites: removal of large volumes of water and seepage from deep excavations, basements and tunnel works
Quarries and mines: pit dewatering (water only, not slurry transfer)
Large infrastructure projects: construction dewatering for metro, rail tunnel and land reclamation ground-improvement works

Performance

The 55 m maximum head is the head at near-zero flow, and the 4,000 L/min (about 240 m³/h) maximum capacity is the end point of the performance curve. The two do not occur together: actual flow falls as total head (static head plus hose friction loss) rises. Select the pump from the performance curve using your site's total head. These figures are Tsurumi Europe's 50 Hz data; the 60 Hz curve differs, so rely on the nameplate and the information supplied by the agent.

Technical specifications

TSURUMI KTZ622 technical specifications
Item	Specification
General
Model	KTZ622
Series	KTZ (heavy-duty submersible dewatering pump)
Discharge bore	150 mm (6 in)
Discharge connection	Multi-directional hose coupling (vertical or inclined)
Hydraulic performance (50 Hz)
Max. head (at zero flow)	55 m
Max. capacity (curve end point)	4,000 L/min (240 m³/h)
Max. solids passage	12 mm
Electrical
Motor output	22 kW
Motor	Dry-type induction motor, 3-phase, 2-pole, insulation class F, IP68, continuous-duty rated
Power supply	3-phase (voltage as per nameplate)
Speed	Synchronous 3,000 min⁻¹ (50 Hz); rated 2,915 rpm (Tsurumi Europe 400V 50Hz data)
Rated current	37.6 A (Tsurumi Europe 400V 50Hz data; actual value as per nameplate)
Starting method	Direct-on-line (D.O.L.); Tsurumi Europe lists it as suitable for soft starters and VFDs
Motor protection	Built-in miniature thermal protector (MTP)
Cable	10 m, chloroprene rubber sheath
Seals and bearings
Shaft seal	Dual inside mechanical seals, silicon carbide (SiC) faces, oil-lubricated, with Oil Lifter
Seal protection	Seal pressure relief ports, 304 stainless steel labyrinth ring
Lubricant	Turbine oil ISO VG32, 2,000 ml
Bearings	Shielded ball bearings
Materials
Impeller	Semi-open, high-chromium cast iron
Suction cover	Ductile cast iron
Casing, frame and motor housing	Grey cast iron
Shaft	420 stainless steel
Liquid limits
Liquid	Site and mine drainage water (with a small amount of sand and silt)
Liquid temperature	0–40 °C
pH	5–9
Max. dry matter	10%
Max. submersion depth	50 m
Dimensions and weight
Dry weight (excl. cable)	296 kg (50 Hz) / 295 kg (60 Hz)
Dimensions (overall width A × body diameter D × overall height B)	558 × 413 × 1,220 mm
Min. water level for continuous running (W1)	330 mm

Sources: Tsurumi KTZ/KTZE/KTD series catalogue (IB107) and Tsurumi Europe KTZ622 data (3-phase 400V 50Hz). Voltage, frequency and rated current of the Hong Kong supply version are as per the nameplate and confirmation from the Hong Kong agent.

KTZ series comparison: 150 mm and 22 kW models

Tsurumi KTZ series model comparison (50 Hz)
Model	Discharge	Power	Max. head	Max. capacity	Max. solids
KTZ67.5	150 mm	7.5 kW	31 m	2,030 L/min	20 mm
KTZ611	150 mm	11 kW	32.5 m	2,440 L/min	20 mm
KTZ615	150 mm	15 kW	39.5 m	2,800 L/min	20 mm
KTZ622 (this product)	150 mm	22 kW	55 m	4,000 L/min	12 mm
KTZ422	100 mm	22 kW	71 m	2,750 L/min	8.5 mm

What's in the box

KTZ622 pump with attached 10 m cable × 1
Hose coupling × 1

Optional accessories

Motor starter or control panel with overload and phase-loss protection, set to the nameplate rated current.
Float switch with control panel: the KTZ622 has no automatic operation, so level-based on/off control needs a separate float switch and control panel.
150 mm discharge hose to suit the hose coupling.

Safety and installation

The pump weighs about 296 kg dry. Use a crane or lifting frame with a chain or shackle on the lifting eye. Never lift it by the cable or the hose.
Three-phase supply only. Wiring must be carried out by a registered electrical worker in line with local regulations, with proper earthing and earth-leakage protection. Check the voltage and current on the nameplate before connecting.
Check the rotation direction after connection. If it is wrong, have an electrician swap two phases.
If the built-in thermal protector trips, find the cause of the overheating or overcurrent before running the pump again. Always isolate and lock out the power before inspection or servicing.
For continuous running, keep the water level at or above 330 mm (W1) and do not run the pump dry for long periods. Use a strainer or raise the pump on a firm base so it does not sink into silt.
The standard model is not seawater-resistant, and the KTZ622 is not on Tsurumi's official model list for the Seawater-Resistant Kit. It is not recommended for long-term use in seawater or brackish water.
Do not pump liquids outside pH 5–9, liquids above 40 °C or flammable liquids, and do not use it in explosive atmospheres. The pump is not explosion-proof and is not for drinking water.

Wear parts and routine checks

Main wear parts: impeller, suction cover and mechanical seals. Long running in sandy or corrosive water speeds up wear, and flow and head drop as a result.
Check the oil in the oil chamber regularly (turbine oil ISO VG32, 2,000 ml). If the oil is cloudy or contains water, have the shaft seals inspected promptly.
Check the cable sheath regularly for damage.

Reviews & Q&A

No reviews yet. Be the first to review this product.

Key features

Top-discharge, side-flow design: keeps the motor cooled even when it runs exposed to air, and gives a slim body that fits confined spaces. For continuous running, keep the water level at or above 330 mm (W1).
Multi-directional hose coupling: the discharge can be set vertical or inclined, so the hose does not fold or kink.
High-chromium cast iron semi-open impeller: resists wear from abrasive particles. The shaft is quench-hardened where it contacts particles.
Dual inside mechanical seals: silicon carbide (SiC) faces sit in the oil chamber, isolated from abrasion and corrosion. Tsurumi states SiC offers about 5 times the corrosion, wear and heat resistance of tungsten carbide.
Oil Lifter (Tsurumi original): keeps the seal faces lubricated and cooled even when the oil drops to about one-third of the normal level.
Seal pressure relief ports and 304 stainless steel labyrinth ring: on 7.5–22 kW models, the relief ports mean the mechanical seals only see the submergence pressure, not the pumping pressure.
Built-in miniature thermal protector (MTP): cuts the motor circuit on overheating or overcurrent.
Anti-wicking cable entry and cable clip: stops water creeping into the motor along the cable by capillary action if the sheath is damaged, while the clip protects the cable against pulling.

Applications

Construction sites: removal of large volumes of water and seepage from deep excavations, basements and tunnel works
Quarries and mines: pit dewatering (water only, not slurry transfer)
Large infrastructure projects: construction dewatering for metro, rail tunnel and land reclamation ground-improvement works

Performance

Technical specifications

TSURUMI KTZ622 technical specifications
Item	Specification
General
Model	KTZ622
Series	KTZ (heavy-duty submersible dewatering pump)
Discharge bore	150 mm (6 in)
Discharge connection	Multi-directional hose coupling (vertical or inclined)
Hydraulic performance (50 Hz)
Max. head (at zero flow)	55 m
Max. capacity (curve end point)	4,000 L/min (240 m³/h)
Max. solids passage	12 mm
Electrical
Motor output	22 kW
Motor	Dry-type induction motor, 3-phase, 2-pole, insulation class F, IP68, continuous-duty rated
Power supply	3-phase (voltage as per nameplate)
Speed	Synchronous 3,000 min⁻¹ (50 Hz); rated 2,915 rpm (Tsurumi Europe 400V 50Hz data)
Rated current	37.6 A (Tsurumi Europe 400V 50Hz data; actual value as per nameplate)
Starting method	Direct-on-line (D.O.L.); Tsurumi Europe lists it as suitable for soft starters and VFDs
Motor protection	Built-in miniature thermal protector (MTP)
Cable	10 m, chloroprene rubber sheath
Seals and bearings
Shaft seal	Dual inside mechanical seals, silicon carbide (SiC) faces, oil-lubricated, with Oil Lifter
Seal protection	Seal pressure relief ports, 304 stainless steel labyrinth ring
Lubricant	Turbine oil ISO VG32, 2,000 ml
Bearings	Shielded ball bearings
Materials
Impeller	Semi-open, high-chromium cast iron
Suction cover	Ductile cast iron
Casing, frame and motor housing	Grey cast iron
Shaft	420 stainless steel
Liquid limits
Liquid	Site and mine drainage water (with a small amount of sand and silt)
Liquid temperature	0–40 °C
pH	5–9
Max. dry matter	10%
Max. submersion depth	50 m
Dimensions and weight
Dry weight (excl. cable)	296 kg (50 Hz) / 295 kg (60 Hz)
Dimensions (overall width A × body diameter D × overall height B)	558 × 413 × 1,220 mm
Min. water level for continuous running (W1)	330 mm

KTZ series comparison: 150 mm and 22 kW models

Tsurumi KTZ series model comparison (50 Hz)
Model	Discharge	Power	Max. head	Max. capacity	Max. solids
KTZ67.5	150 mm	7.5 kW	31 m	2,030 L/min	20 mm
KTZ611	150 mm	11 kW	32.5 m	2,440 L/min	20 mm
KTZ615	150 mm	15 kW	39.5 m	2,800 L/min	20 mm
KTZ622 (this product)	150 mm	22 kW	55 m	4,000 L/min	12 mm
KTZ422	100 mm	22 kW	71 m	2,750 L/min	8.5 mm

What's in the box

KTZ622 pump with attached 10 m cable × 1
Hose coupling × 1

Optional accessories

Motor starter or control panel with overload and phase-loss protection, set to the nameplate rated current.
Float switch with control panel: the KTZ622 has no automatic operation, so level-based on/off control needs a separate float switch and control panel.
150 mm discharge hose to suit the hose coupling.

Safety and installation

The pump weighs about 296 kg dry. Use a crane or lifting frame with a chain or shackle on the lifting eye. Never lift it by the cable or the hose.
Three-phase supply only. Wiring must be carried out by a registered electrical worker in line with local regulations, with proper earthing and earth-leakage protection. Check the voltage and current on the nameplate before connecting.
Check the rotation direction after connection. If it is wrong, have an electrician swap two phases.
If the built-in thermal protector trips, find the cause of the overheating or overcurrent before running the pump again. Always isolate and lock out the power before inspection or servicing.
For continuous running, keep the water level at or above 330 mm (W1) and do not run the pump dry for long periods. Use a strainer or raise the pump on a firm base so it does not sink into silt.
The standard model is not seawater-resistant, and the KTZ622 is not on Tsurumi's official model list for the Seawater-Resistant Kit. It is not recommended for long-term use in seawater or brackish water.
Do not pump liquids outside pH 5–9, liquids above 40 °C or flammable liquids, and do not use it in explosive atmospheres. The pump is not explosion-proof and is not for drinking water.

Wear parts and routine checks

Main wear parts: impeller, suction cover and mechanical seals. Long running in sandy or corrosive water speeds up wear, and flow and head drop as a result.
Check the oil in the oil chamber regularly (turbine oil ISO VG32, 2,000 ml). If the oil is cloudy or contains water, have the shaft seals inspected promptly.
Check the cable sheath regularly for damage.

JACO自營旗艦店

TSURUMI KTZ622 Submersible Dewatering Pump (150mm, 22kW, 3-Phase)

JACO自營旗艦店

Key features

Applications

Performance

Technical specifications

KTZ series comparison: 150 mm and 22 kW models

What's in the box

Optional accessories

Safety and installation

Wear parts and routine checks

Reviews & Q&A

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TSURUMI KTZ622 Submersible Dewatering Pump (150mm, 22kW, 3-Phase)

JACO自營旗艦店

Key features

Applications

Performance

Technical specifications

KTZ series comparison: 150 mm and 22 kW models

What's in the box

Optional accessories

Safety and installation

Wear parts and routine checks

Reviews & Q&A