B Series

Features

Non-clog impeller
The pump incorporates a channel type impeller having a wide channel extending from inlet to exit, preventing internal clogging.

OIL LIFTER (patent pending)
The OIL LIFTER stabilizes the function of the mechanical seal. It increases the life expectancy of the seal and extends the maintenance cycle. The OIL LIFTER is supplied on all pumps of 1.5kW or over.

Dual inside mechanical seal
The pump is furnished with a dual inside mechanical seal located completely in an oil chamber. This seal system does not rely on the pumped media for the lubrication and cooling, which increases the reliability of the sealing.

Anti-wicking cable entry
Every cabtyre cable has an anti-wicking block at the cable entry section of the pump. This unique feature protects the motor from the ingress of water that may be caused by damage to the sheath of the cable. Each pump up to 3.7kW has a rubber moulded cable entry, pumps of 5.5kW or above has en epoxy-filled cable entry.

Motor protection device
Every pump has a motor protection device built in its motor. A circle thermal protector (CTP) is supplied on the pumps up to 7.5kW and miniature thermal protectors (MTP) is supplied on pumps greater than 11kW.

Guide rail fitting version
Guide rail fittings readily connect/disconnectthe pump to/from the piping system only by lifting up and down the pump, allowing easy maintenance and inspection without the need to enter the sump. Pumps in this version have a \"TOS\" identifier on top of their model codes.

Automatic type available
An automatic or auto-alternation version in pumps up to 3.7kW modules. Automatic or auto-alternating B series pumps come with an integrated control circuit and two low voltage float switches. Auto-alternating pumps are used for dual automatic operations without the need of a control panel.

Large Pump Range

Large number of pumps for all flow types can be used in applications from 5L/sec (50mm pump) to in excess of 1700L/sec (800mm pump) for standard pumps.

Special Options

Galvanic Corrosion Protection

In sea water applications, Tsurumi can supply pumps with higher electrical potential sacrificial anodes so that these parts corrode before the pump material resulting in longer life span for the pump.

High Temperature Liquid

Standard pumps are designed for continuous running at a maximum temperature of 40°C. Two high temperature operating models are available. Rank 60 for operation in liquids up to 60°C and Rank 90 for operation in liquids up to 90°C.

Different Materials

Impellers, pump castings and suction covers can be made of stainless steel, chromium iron and bronze if required.

Applications

Transfer of sewage and wastewater at sewage treatment plants
Transfer of wastewater at industrial wastewater treatment plants
Pumping or boosting sewage and rain water in a sewage lift station
Drainage of storm water in a flood control pump station or detention facilities
Drainage of sewage and wastewater in factories and buildings
Drainage ofrainwater from basements, underground car parks, or underpasses

Performance Curves

Technical Specifications

Model	Curve number	Discharge (mm)	Power (kW)	Voltage (V)	Cable (m)	Max flow (L/s)	Shut-off (m)	Weight (kg)	Max solid (mm)	Rated current A 240V or 415V)
Standard
50B2.75S-51	3	50	0.75	240	10	5.7	14	32	19	6.1
50B2.4-51	1	50	0.4	415	20	4.3	9	25	19	1.1
50B2.75-51	3	50	0.75	415	20	7.1	12	25	20	2
50B2.75H-51	2	50	0.75	415	20	5.7	15.5	24	20	2
80B21.5-51	4	80	1.5	415	20	16.6	16	36	40	3.8
100B42.2-51	5	100	2.2	415	20	24.9	16.6	68	45	5.1
100B43.7-51	6	100	3.7	415	20	33	16.2	84	53	8.2
100B43.7H-51	7	100	3.7	415	20	20	20	81	35	8.2
100B45.5-51	8	100	5.5	415	20	34	26	149	40	12.1
100B47.5-51	9	100	7.5	415	20	37.5	30	162	40	15.7
Automatic
50BA2.75S-51	3	50	0.75	240	10	5.7	14	34	19	6.1
50BA2.75H-51	2	50	0.75	415	20	5.7	15.5	34	20	2
80BA21.5-51	4	80	1.5	415	20	16.6	16	40	40	3.8
100BA42.2-51	5	100	2.2	415	20	24.9	16.6	78	45	5.1
100BA43.7-51	6	100	3.7	415	20	33	16.2	94	53	8.2
Auto-alternation
50BW2.75H-51	2	50	0.75	415	20	5.7	15.5	34	20	2
80BW21.5-51	4	80	1.5	415	20	16.6	16	40	40	3.8
100BW42.2-51	5	100	2.2	415	20	24.9	16.6	78	45	5.1
100BW43.7-51	6	100	3.7	415	20	33	16.2	94	53	8.2

Dimensions

All dimensions are in mm

Model	D	H	A	A1	A2	A3	B	B1	W1	W2	d	D1	D2
Standard
50B2.75S-51	250	523	405	226	125	138	199	140	410	170	50	125	125
50B2.4-51	224	443	347	208	85	120	181	140	340	140	50	112	112
50B2.75-51	250	439	405	226	125	138	199	140	410	170	50	125	125
50B2.75H-51	250	415	405	226	125	138	199	140	385	145	50	125	125
80B21.5-51	250	536	446	267	125	165	234	140	465	190	80	125	125
100B42.2-51	331	616	569	322	154	210	303	-	570	225	100	164	167
100B43.7-51	339	690	575	322	160	210	308	-	645	175	100	164	175
100B43.7H-51	331	666	569	322	154	210	303	-	620	225	100	164	167
100B45.5-51	400	824	687	388	194	260	372	400	700	335	100	197	203
100B47.5-51	400	814	687	388	194	260	372	400	720	335	100	197	203
Automatic
50BA2.75S-51	250	523	405	226	125	138	199	140	410	170	50	125	125
50BA2.75H-51	250	415	405	226	125	138	199	140	385	145	50	125	125
80BA21.5-51	250	536	446	267	125	165	234	140	465	190	80	125	125
100BA42.2-51	331	616	569	322	154	210	303	-	570	225	100	164	167
100BA43.7-51	339	690	575	322	160	210	308	-	645	175	100	164	175
Auto-alternation
50BW2.75H-51	250	415	405	226	125	138	199	140	385	145	50	125	125
80BW21.5-51	250	536	446	267	125	165	234	140	465	190	80	125	125
100BW42.2-51	331	616	569	322	154	210	303	-	570	225	100	164	167
100BW43.7-51	339	690	575	322	160	210	308	-	645	175	100	164	175

B series pumps are available to 110kW Prices for free standing units do not include Discharge Bend sets and stand sets. Prices with guide rail include TOS kit but exclude guide rails.

Product Disclaimer: The product information and specifications on this website should be used as a guide only. The customer is responsible for ensuring the capacity and performance of the goods are sufficient and suitable for the customer's purpose. Malcolm Thompson Pumps takes no responsibility for errors or omissions in product features or specifications.