Submersible Sewage Pumps BZ Series

Tsurumi BZ series pumps are heavy-duty, submersible sewage and wastewater pumps that are designed with a shrouded single/two-channel impeller and wide passages of over 3
inches (76.2 mm) in diameter to minimize trouble due to clogged solids. In addition, as mid to large sized pumps with 22 – 75 kW of drive power, they raise the already high pump efficiency standard of predecessor sewage and wastewater pumps of the Tsurumi brand with even better energy efficiency.

The BZ series offers a wide line up of discharge bores ranging from 80 – 350 mm and motor outputs of 1.5 – 75 kW. Moreover, the pumps can be used with Tsurumi’s guide rail fitting device that facilitates installation and maintenance. The BZ series pumps come packed with a number of original technologies developed and honed over years of service including an anti-wicking cable, motor protector, dual inside mechanical seals with silicon carbide faces and Oil Lifter.

Highly reliable and durable, Tsurumi BZ-series pumps are designed and built for sound quality and continuous duty that can help you keep your
systems — whether for wastewater drainage, pumping or flood control — running stably and greatly reduce your maintenance costs. As an option,
the pumps can be adapted for seawater, high temperature liquids or other special application, paving the way for their use at shipyardsand power
plants for water intake and discharge.

Performance Range

Selection Table

★ : Single/Three-phase model can be selected in the same motor output.
☆ : Single-phase model only.
● : High head type model only.

Model Number Designation

Motor Output (kW)	11	22	30	37	45	55	75
3" 80mm
4" 100mm	★
8" 200mm
10" 250mm		★	★	★	★	★	★
12" 300mm		★	★	★	★	★	★
14" 350mm		☆	☆	☆	☆	☆	☆

Guide Rail Fitting System

The guide rail fitting system connects the pump to and from the piping easily just by lowering and hoisting the pump, allowing easy maintenance and inspection without the need to enter the sump.
The TOS/TO is the guide rail fitting system made of cast iron and is compatible with cast iron pumps.

Accessories
• Duckfoot Bend
• Guide Support
• Guide Hook
• Lifting Chain 5m
• JIS 10kg/cm 2 Flange
(TOS set only, excluding TOS200B422)

Float Switches

Tsurumi offers two types of float switches (liquid level sensors). A micro-switch is incorporated in both types.

Model MC-2 is a heavy-duty type float switch with a shock absorber.
Having equipped with a high grade micro switch, the MC-2 assures trouble-free operation in the liquid containing much suspended solids and floating scum. Either of the two contacts, normally-open or normally-close, can be selected as required.

Model RF-5 is an economy type float which can detect upper/lower limit water levels with single float. The snap on-off action ensures stable operation in clean or waste water containing suspended solids or oil and fat.

Options

Seawater-Resistant Version

In seawater, a material’s resistance to corrosion can be seen clearly. When metals with different potentials are brought into contact in seawater, only the metal of lower potential corrodes. As the difference in potential increases, the metal of lower potential corrodes faster. As an option, Tsurumi can supply pumps with parts made of higher electric potential metal as the sacrificial anode.

High Temperature Liquids Version

Tsurumi’s submersible pumps are applicable to high temperature liquids of up to 80°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.

Special Material Version

Tsurumi can also provide you with pumps with essential components such as the impeller, pump casing and the suction cover made of non-standard materials. Select from stainless steel, high-chromium cast iron and bronze to suit your specific requirements.

Dry Pit Version

The dry pit pumps can be installed indoors and outside of tanks, and still deliver the performance of conventional submersible pumps. Daily inspection and maintenance are easy, because the pump body is installed outside of tanks. These pumps have been developed with Tsurumi-original specifications, aiming for stable operation and reduction in maintenance labor.

Design Model 300BZ475

1.Anti-wicking Cable Entry
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.

2.Air Release Valve
Fitted on the water jacket or the pump casing to prevent the air lock. When air flows through the valve, the ball stays at the bottom, but when the pumped water starts to flow, the ball closes the outlet because of its buoyancy.

3.Motor Protector
Circle Thermal Protector (7.5kW and below)
Directly cuts the motor circuit if excessive heat builds up or overcurrent occurs in the motor.
Miniature Thermal Protectors (11kW and above)
React to excessive heat caused by dry-running. The bimetal strip opens to cause the control panel to shut the power supply.

4.Water Jacket (150B475 only)
The pump is equipped with a water jacket, around the motor frame. A portion of the pumped liquid is allowed to flow into the water jacket to cool the motor. This design feature permits the unit to operate at low water levels for extended periods of time.

5.Dual Inside Mechanical Seals with Silicon Carbide Faces
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 chemical

6.Oil Lifter
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.

7.Leakage Sensor (22kW and above)
Detects flooding into the oil chamber that may occur in a worst case scenario. When flooding is detected, signals are sent to operate the indicator lamps through the external control panel.

8.Seal Pressure Relief Port (22kW and above)
Protects the mechanical seal from pump pressure. It also protects the seal face by discharging wear particles.

9.Back Pull-out Design (3.7kW and below, and 15kW and above)
Enables the motor to be separated from the pump unit with the impeller attached, by removing the bolts between the oil casing and the pump casing. This design facilitates maintenance and inspection of the principal parts of the pump.

Shrouded Channel Impeller
with Wide Passages to Prevent Clogging

– Over 3 Inches Passage –

BZ-series pumps come with wide passages of over 3 inches (76.2mm) in diameter — the largest being 90mm across — to minimize trouble due to clogged solids and fibrous matter. They adopt a shrouded single/two-channel impeller.

BZ -Channel Impeller-

The BZ-series is a submersible sewage and wastewater pumps that is designed with a shrouded single/two-channel impeller and wide passages of over 3 inches (76.2 mm) in diameter to minimize trouble due to clogged solids. In addition, as mid to large sized pumps with 22 – 75 kW of drive power, they raise the already high pump efficiency standard of predecessor sewage and wastewater pumps of the Tsurumi brand with even better energy efficiency.

Dimensions

Performance Curves

Discharge Bore: 80 • 100 • 200mm

Discharge Bore mm	Model		Motor Output kW	Phase	Starting Method	Solids Passage mm	Dimensions L x W x H 50/60Hz mm		Dry Weight*2 kg		Cable Length m
Discharge Bore mm	Free Standing	Guide Rail Fitting	Motor Output kW	Phase	Starting Method	Solids Passage mm	Free Standing	Guide Rail Fitting	Free Standing	Guide Rail Fitting	Cable Length m
80	80BZ41.5	TOS80BZ41.5	1.5	Three	D.O.L.	80	523 x 273 x 631	697 x 273 x 646	78	74	6
100	100BZ42.2	TOS100BZ42.2	2.2		D.O.L.	80	551 x 273 x 631	709 x 273 x 646	80	74	6
	100BZ43.7	TOS100BZ43.7	3.7		D.O.L.	80	585 x 289 x 681	743 x 289 x 696	100	94	6
	100BZ45.5	TOS100BZ45.5	5.5		D.O.L.	80	716 x 421 x 924	935 x 406 x 914	168	161	8
	100BZ47.5	TOS100BZ47.5	7.5		D.O.L.	80	716 x 421 x 945	935 x 406 x 935	179	172	8
	100BZ411	TOS100BZ411	11		Star-Delta	80	727 x 431 x 1023	946 x 428 x 1016	214	207	8
	100BZ411H (50Hz)	TOS100BZ411H (50Hz)	11		Star-Delta	80	727 x 431 x 1023	946 x 428 x 1016	214	207	8
	100BZ415	TOS100BZ415	15		Star-Delta	80	845 x 526 x 1160/ 770 x 444 x 1093	1044 x 494 x1074/ 989 x 444 x 1081	308	293	8
200	200BZ622	TQ200BZ622	22		Star-Delta	76.2	1208 x 760 x 1584	1459 x 660 x 1494	760	710	10
	200BZ430	TO200BZ430	30		Star-Delta	76.2	1208 x 760 x 1504	1459 x 660 x 1409	780	730	10
	200BZ437	TQ200BZ437	37		Star-Delta	76.2	1208 x 760 x 1577	1459 x 660 x 1482	830	780	10
	200BZ445	TO200BZ445	45		Star-Delta	76.2	1208 x 760 x 1584	1459 x 660 x 1494	840	790	10
	200BZ455	TO200BZ455	55		Star-Delta	76.2	1208 x 760 x 1736	1461 x 660 x 1646	1340	1290	10
	200BZ475	T0200BZ475	75		Star-Delta	76.2	1208 x 760 x 1736	1461 x 660 x 1646	1340	1290	10

^{* 1} Refer to page 11 for dimension symbol positions.
^{* 2} All weights excluding cable
Weights of guide rail fitting excluding duckfoot bend

Performance Curves

Discharge Bore: 250mm

Discharge Bore mm	Model		Motor Output kW	Phase	Starting Method	Solids Passage 50/60Hz mm	Dimensions L x W x H*1 mm		Dry Weight*2 kg		Cable Length m
Discharge Bore mm	Free Standing	Guide Rail Fitting	Motor Output kW	Phase	Starting Method	Solids Passage 50/60Hz mm	Free Standing	Guide Rail Fitting	Free Standing	Guide Rail Fitting	Cable Length m
250	250BZ622	TO250BZ622	22	Three	Star-Delta	90/80	1235 x 724 x 1650	1486 x 616 x 1514	810	760	10
	250BZ430	TO250BZ430	30		Star-Delta	80/79	1235 x 724 x 1570	1486 x 616 x 1434	830	780	10
	250BZ437	TO250BZ437	37		Star-Delta	80/79	1235 x 724 x 1643	1486 x 616 x 1507	880	830	10
	250BZ445	TO250BZ445	45		Star-Delta	80/79	1235 x 724 x 1650	1486 x 616 x 1514	890	840	10
	250BZ455	TO250BZ455	55		Star-Delta	90/80	1235 x 724 x 1802	1519 x 636 x 1666	1390	1290	10
	250BZ475	TO250BZ475	75		Star-Delta	90/80	1235 x 724 x 1802	1519 x 636 x 1666	1390	1290	10
250 -High Head	250BZ622H	TO250BZ622H	22		Star-Delta	76.2	1313 x 760 x 1584	1577 x 660 x 1467	760	710	10
	250BZ430H	TO250BZ430H	30		Star-Delta	76.2	1313 x 760 x 1504	1577 x 660 x 1387	780	730	10
	250BZ437H	TO250BZ437H	37		Star-Delta	76.2	1313 x 760 x 1577	1577 x 660 x 1460	830	780	10
	250BZ445H	TO250BZ445H	45		Star-Delta	76.2	1313 x 760 x 1584	1577 x 660 x 1467	840	790	10
	250BZ455H	TO250BZ455H	55		Star-Delta	76.2	1313 x 760 x 1736	1579 x 660 x 1619	1340	1290	10
	250BZ475H	TO250BZ475H	75		Star-Delta	76.2	1313 x 760 x 1736	1579 x 660 x 1619	1340	1290	10

^{* 1} Refer to page 11 for dimension symbol positions.
^{* 2} All weights excluding cable
Weights of guide rail fitting excluding duckfoot bend

Performance Curves

Discharge Bore: 300mm

Discharge Bore mm	Model		Motor Output kW	Phase	Starting Method	Solids Passage 50/60Hz mm	Dimensions L x W x H^*1 mm		Dry Weight^*2 kg		Cable Length m
Discharge Bore mm	Free Standing	Guide Rail Fitting	Motor Output kW	Phase	Starting Method	Solids Passage 50/60Hz mm	Free Standing	Guide Rail Fitting	Free Standing	Guide Rail Fitting	Cable Length m
300	300BZ622	TO300BZ622	22	Three	Star-Delta	90	1386 x 800 x 1677	1674 x 658 x 1550	910	810	10
	300BZ630	TO300BZ630	30		Star-Delta	90	1386 x 800 x 1677	1674 x 658 x 1550	950	800	10
	300BZ637	TO300BZ637	37		Star-Delta	90	1386 x 800 x 1677	1674 x 658 x 1550	940	840	10
	300BZ645	TO300BZ645	45		Star-Delta	90	1386 x 800 x 1845	1691 x 680 x 1718	1210	1110	10
	300BZ655	TO300BZ655	55		Star-Delta	90	1386 x 800 x 1845	1691 x 680 x 1718	1210	1110	10
	300BZ475	TO300BZ475	75		Star-Delta	90	1386 x 800 x 1829	1674 x 680 x 1702	1240	1140	10
300 -High Head	300BZ622H	TO300BZ622H	22		Star-Delta	90/80	1288 x 724 x 1650	1580 x 616 x 1537	810	760	10
	300BZ430H	TO300BZ430H	30		Star-Delta	80/79	1288 x 724 x 1570	1580 x 616 x 1457	830	780	10
	300BZ437H	TO300BZ437H	37		Star-Delta	80/79	1288 x 724 x 1643	1580 x 616 x 1530	880	830	10
	300BZ445H	TO300BZ445H	45		Star-Delta	80/79	1288 x 724 x 1650	1580 x 616 x 1537	890	840	10
	300BZ455H	TO300BZ455H	55		Star-Delta	90/80	1288 x 724 x 1802	1613 x 616 x 1689	1390	1290	10
	300BZ475H	TO300BZ475H	75		Star-Delta	90/80	1288 x 724 x 1802	1613 x 616 x 1689	1390	1290	10

^{* 1} Refer to page 11 for dimension symbol positions.
^{* 2} All weights excluding cable
Weights of guide rail fitting excluding duckfoot bend

Performance Curves

Discharge Bore: 350mm

Discharge Bore mm	Model		Motor Output kW	Phase	Starting Method	Solids Passage 50/60Hz mm	Dimensions L x W x H mm		Dry Weight* kg		Cable Length m
Discharge Bore mm	Free Standing	Guide Rail Fitting	Motor Output kW	Phase	Starting Method	Solids Passage 50/60Hz mm	Free Standing	Guide Rail Fitting	Free Standing	Guide Rail Fitting	Cable Length m
350 -High Head-	350BZ622H	TO350BZ622H	22	Three	Star-Delta	90	1508 x 800 x 1677	1749 x 658 x 1595	910	810	10
	350BZ630H	TO350BZ630H	30		Star-Delta	90	1508 x 800 x 1677	1749 x 658 x 1595	950	800	10
	350BZ637H	TO350BZ637H	37		Star-Delta	90	1508 x 800 x 1677	1749 x 658 x 1595	940	840	10
	350BZ645H	TO350BZ645H	45		Star-Delta	90	1508 x 800 x 1845	1749 x 680 x 1763	1210	1110	10
	350BZ655H	TO350BZ655H	55		Star-Delta	90	1508 x 800 x 1845	1749 x 680 x 1763	1210	1110	10
	350BZ475H	TO350BZ475H	75		Star-Delta	90	1508 x 800 x 1829	1749 x 680 x 1747	1240	1140	10

^* All weights excluding cable
Weights of guide rail fitting excluding duckfoot bend

Specifications

#1		BZ
#1		80BZ41.5	100BZ42.2	100BZ43.7	100BZ45.5	100BZ47.5	100BZ411	1008741H (50Hz)	100BZ415
PUMP	Discharge Bore mm	80	100
	Discharge Connection	Threaded JIS 10kg/cm 2 Flange
	Solids Passage 5060Hz mm	80
	Impeller	Shrouded Single-channel
		Radial Gap			Axial Gap
		Gray Cast Iron
	Suction Cover	-			Gray Cast Iron
	Oil Seal	Nitrile Butadiene Rubber							-
	Casing	Gray Cast Iron
	Shaft Seal	Dual Inside Mechanical Seals (with Oil Lifter)
	Shaft Seal	Silicon Carbide
	Shaft Sleeve	-
MOTOR	Type	Continuous-duty Rated, Dry-type Induction Motor
	Output kW	1.5	2.2	3.7	5.5	7.5	11		15
	Phase	Three
	Pole	4
	Speed (S.S.) min ^-1 50/60Hz	1500/1800						1500/-	1500/1800
	Insulation	E			F
	Starting Method	D.O.L.					Star-Delta
	Motor Protector (built-in)	CTP					MTP
	Leakage Sensor (built-in)	-
	Lubricant ml	1300			4200	4800	6500		5500
	Lubricant ml	Turbine Oil (ISO VG32)
	Frame	Gray Cast Iron
	Outor Cover	-
	Shaft	420 Stainless Steel
	Power Cable m	P6			8
	Power Cable m	PVC			Chloroprene Rubber
Dry Weight*	Free Standing kg	78	80	100	168	179	214		308
Dry Weight*	Guide Rail Fitting kg	74		94	161	172	207		293

* All weights excluding cable
Weights of guide rail fitting excluding duckfoot bend

Specifications

#2		BZ
#2		200BZ622 250BZ622H	200BZ430 250BZ430H	200BZ437 250BZ437H	200BZ445 250BZ445H	200BZ455 250BZ455H	200BZ475 250BZ475H
PUMP	Discharge Bore mm	200 250
	Discharge Connection	JIS 10kg/cm 2 Flange
	Solids Passage 5060Hz mm	76.2
	Impeller	Shrouded Two-channel
		Radial Gap
		Gray Cast Iron
	Suction Cover	Gray Cast Iron
	Oil Seal	Nitrile Butadiene Rubber
	Casing	Gray Cast Iron
	Shaft Seal	Dual Inside Mechanical Seals (with Oil Lifter)
	Shaft Seal	Silicon Carbide
	Shaft Sleeve	304 Stainless Steel				403 Stainless Steel
MOTOR	Type	Continuous-duty Rated, Dry-type Induction Motor
	Output kW	22	30	37	45	55	75
	Phase	Three
	Pole	6	4
	Speed (S.S.) min ^-1 50/60Hz	1000/1200	1500/1800
	Insulation	F
	Starting Method	Star-Delta
	Motor Protector (built-in)	MTP
	Leakage Sensor (built-in)	Electrode
	Lubricant ml	9500				9400
	Lubricant ml	Turbine Oil (ISO VG32)
	Frame	Gray Cast Iron
	Outor Cover	-				Rolled Steel
	Shaft	420 Stainless Steel
	Power Cable m	10
	Power Cable m	Chloroprene Rubber
Dry Weight*	Free Standing kg	760	780	830	840	1340
Dry Weight*	Guide Rail Fitting kg	710	730	780	790	1290

* All weights excluding cable
Weights of guide rail fitting excluding duckfoot bend

Specifications

#3		BZ
#3		250BZ622 300BZ622H	250BZ430 300BZ430H	250BZ437 300BZ437H	250BZ445 300BZ445H	250BZ455 300BZ455H	H 250BZ475 300BZ475H	300BZ622 350BZ622H	300BZ630 350BZ630H	H 300BZ637 350BZ637H	300BZ645 350BZ645H	300BZ655 350BZ655H	300BZ475 350BZ475H
PUMP	Discharge Bore mm	250 300						300 350
	Discharge Connection	JIS 10kg/cm 2 Flange
	Solids Passage 5060Hz mm	90/80	80/79			90/80		90
	Impeller	Shrouded Two-channel
		Radial Gap
		Gray Cast Iron
	Suction Cover	Gray Cast Iron
	Oil Seal	Nitrile Butadiene Rubber
	Casing	Gray Cast Iron
	Shaft Seal	Dual Inside Mechanical Seals (with Oil Lifter)
	Shaft Seal	Silicon Carbide
	Shaft Sleeve	304 Stainless Steel				403 Stainless Steel		304 Stainless Steel			403 Stainless Steel
MOTOR	Type	Continuous-duty Rated, Dry-type Induction Motor
	Output kW	22	30	37	45	55	75	22	30	37	45	55	75
	Phase	Three
	Pole	6	4					6					4
	Speed (S.S.) min -1 50/60Hz	1000/1200	1500/1800					1000/1200					1500/1800
	Insulation	F
	Starting Method	Star-Delta
	Motor Protector (built-in)	MTP
	Leakage Sensor (built-in)	Electrode
	Lubricant ml	9500				9400		9500			11000	13000	9400
	Lubricant ml	Turbine Oil (ISO VG32)
	Frame	Gray Cast Iron
	Outor Cover	-				Rolled Steel		-			Rolled Steel
	Shaft	420 Stainless Steel
	Power Cable m	10
	Power Cable m	Chloroprene Rubber
Dry Weight*	Free Standing kg	810	830	880	890	190		910	950	940	1210		1240
Dry Weight*	Guide Rail Fitting kg	760	780	830	840	1290		810	800	840	1110		1140

* All weights excluding cable
Weights of guide rail fitting excluding duckfoot bend