Impeller pump BM series
waterwith electric motorself-priming

Impeller pump - BM series - Wilo - water / with electric motor / self-priming
Impeller pump - BM series - Wilo - water / with electric motor / self-priming
Impeller pump - BM series - Wilo - water / with electric motor / self-priming - image - 2
Impeller pump - BM series - Wilo - water / with electric motor / self-priming - image - 3
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Characteristics

Technology
impeller
Fluid
water
Operation
with electric motor
Priming
self-priming
Mobility
stationary
Domain
industrial
Applications
cooling
Material
stainless steel, bronze
Voltage
400 V
Protection level
standard, IP55
Other characteristics
compact, mechanical, single-stage, with flange, seal, heating
Flow

Max.: 450.1 m³/h
(15,895.13149 ft³/h)

Min.: 19.6 m³/h
(692.16747 ft³/h)

Pressure

10 bar, 16 bar
(145.038 psi, 232.06 psi)

Power

Max.: 55 kW
(74.78 hp)

Min.: 0.37 kW
(0.5 hp)

Fluid temperature

Max.: 90 °C
(194 °F)

Min.: -10 °C
(14 °F)

Length

Max.: 1,025 mm
(40 in)

Min.: 415 mm
(16 in)

Width

Max.: 520 mm
(20.47 in)

Min.: 210 mm
(8.27 in)

Height

Max.: 635 mm
(25 in)

Min.: 252 mm
(9.92 in)

Weight

Max.: 511 kg
(1,126.56 lb)

Min.: 30 kg
(66.14 lb)

Description

Product name
BM

Type
Monobloc pump

Main features
  • Compact close-coupled design with directly flanged three-phase current motor and one-piece motor pump shaft
  • Available in cast stainless steel (BM-S) and cast bronze (BM-B) for many applications
  • Performance and main dimensions in accordance with EN 733 (DIN for long-coupled end suction pumps)
  • Standard-equipped feet on pump housing and motor for installation on a base

Design
Glanded pump in close-coupled design with flange connection

Application
For pumping heating water (in accordance with VDI 2035), water-glycol mixtures, cooling water and chilled water without abrasive substances in heating, chilled water and cooling water systems.

Type key
NO VALUE

Technical data
  • Minimum efficiency index (MEI) ≥ 0.4
  • Permissible temperature range: -10 °C to +90 °C
  • Mains connection: 3~400 V, 50 Hz
  • IP rating: IP55
  • Nominal diameter: DN 32 to DN 125
  • Max. operating pressure: 10 bar

Materials
  • Pump housing BM-B: Bronze CuSn10
  • Pump housing BM-S: Cast stainless steel 1.4408
  • Impeller BM-B: Bronze CuSn10
  • Impeller BM-S: Cast stainless steel 1.4408
  • Shaft: 1.4362
  • Mechanical seal: Q1Q1VGG

Construction
  • Single-stage glanded centrifugal pump in compact close-coupled design
  • Directly flanged three-phase current motor and one-piece motor pump shaft
  • Mechanical seal Q1Q1VGG
  • Feet on pump housing and motor

Scope of delivery
  • Pump
  • Installation and operating instructions

Options
  • Version ...-K3 with PTC thermistor sensor (for a surcharge)
  • Other mechanical seals on request

Product variants (table)
Number of results: [280]

Table header
Product description | Number of poles | MEI | IE | Nominal flange diameter | Mechanical seal | Rated power P2 | Gross weight approx. m | Article number

Sample rows (first entries)
BM-B 32/100-0,75/2 | 2 | 0.4 | IE3 | DN 32 | Q1Q1VGG | 0.75 kW | 31.5 kg | 2164370
BM-B 32/120-1,1/2 | 2 | 0.4 | IE3 | DN 32 | Q1Q1VGG | 1.1 kW | 33.5 kg | 2164371
BM-B 32/130-1,5/2 | 2 | 0.4 | IE3 | DN 32 | Q1Q1VGG | 1.5 kW | 35.5 kg | 2164372
BM-B 32/140-2,2/2 | 2 | 0.4 | IE3 | DN 32 | Q1Q1VGG | 2.2 kW | 38.5 kg | 2164373
BM-B 32/150-2,2/2 | 2 | 0.4 | IE3 | DN 32 | Q1Q1VGG | 2.2 kW | 40.5 kg | 2164374
BM-B 32/160-3/2 | 2 | 0.4 | IE3 | DN 32 | Q1Q1VGG | 3 kW | 46 kg | 2164375
BM-B 32/170-0,55/4 | 4 | 0.4 | IE3 | DN 32 | Q1Q1VGG | 0.55 kW | 33.5 kg | 2103209
BM-B 32/170-4/2 | 2 | 0.4 | IE3 | DN 32 | Q1Q1VGG | 4 kW | 58 kg | 2164376
BM-B 32/220-1,1/4 | 4 | 0.4 | IE3 | DN 32 | Q1Q1VGG | 1.1 kW | 44 kg | 2103210
BM-B 32/220-7,5/2 | 2 | 0.4 | IE3 | DN 32 | Q1Q1VGG | 7.5 kW | 98.5 kg | 2164378

Note
The product family contains many further variants (total results shown above). Each variant differs by pump size, rated power, number of poles and gross weight. The table on the original product page lists all available configurations and article numbers.

Catalogs

No catalogs are available for this product.

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Exhibitions

Meet this supplier at the following exhibition(s):

Ecomondo 2026
Ecomondo 2026

3-06 Nov 2026 Rimini (Italy) Hall B7 - Stand 107-206

  • More information
    *Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.
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