BL series

Pump BL – KL is a large flow submersible pump. Trusted and widely applied in: agricultural irrigation, forestry, industrial water supply, centralized water supply and drainage, projects requiring large amounts of water, etc.

BL pump is designed with internal copper casting, double mechanical seal and 3 separate impeller design. Most of the housing is made of extremely corrosion resistant stainless steel, the impeller is made of ABLC3 which is suitable for seawater and sand resistant applications.

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01 · LARGE-VOLUME AXIAL-FLOW / MIXED-FLOW SUBMERSIBLE PUMP

BL Series

McKarlen BL large-volume submersible pumps use an axial-flow or mixed-flow hydraulic configuration according to model. Application contexts include aquaculture, irrigation, water drainage and landscape fountains. Confirm the model against flow, head, liquid, electrical supply and installation conditions.

FlowHeadLiquidElectrical supplyInstallation conditions
View Model DataSubmit Pump Selection Data

Group of four McKarlen BL Series submersible pumps
BL SeriesBL family reference image

02 · TYPE AND SERIES POSITION

BL large-volume axial-flow / mixed-flow submersible pump family

BL is a vertically arranged submersible pump family with an axial-flow or mixed-flow hydraulic configuration depending on model. Review the four documented models against the duty point, liquid, electrical supply and actual installation conditions.

BL Series product image
BL SERIES

Axial-flow / mixed-flow submersible pump

The BL model scope covers BL-63.7, BL-85.5, BL-107.5 and BL-1211, each with its own rated point, power, discharge, overall dimensions and weight.

  • Select by flow and head
  • Confirm impeller type by model
  • Check electrical and installation configuration
EQUIPMENT CONFIGURATION

BL configuration by model

The BL evidence records a 3-phase, 4-pole, 1500 rpm dry motor at 50 Hz, Class F insulation, IP68 protection, auto-cut protection and a double mechanical seal. Confirm voltage, exact impeller type and final supplied configuration by model.

03 · EQUIPMENT APPLICATIONS

Application contexts suited to BL review

These are equipment application contexts. They are not project references and do not guarantee that every model fits every liquid condition.

Aquaculture

Review flow, head, liquid, materials and submergence conditions before model selection.

Irrigation

Confirm the duty point, electrical supply, discharge and operating schedule for the actual system.

Water drainage

Select equipment by flow and head; do not extend this context to unverified wastewater duties.

Landscape fountains

Check circulation flow, head, liquid and installation conditions against the selected model.

04 · KEY TECHNICAL DATA

BL data for four models

The flow and head values below are rated points for each model, not whole-family maxima or selection guarantees.

BL Series — model order: 63.7 / 85.5 / 107.5 / 1211

2.0 · 3.5 · 5.5 · 7.0 m³/min1. Rated flow by model
10 · 6 · 6 · 7 m2. Rated head by model
3.7 · 5.5 · 7.5 · 11 kW3. Power by model
1500 rpm · 4P · 50 Hz4. Speed and frequency

Four BL models with technical data

  • BL-63.7 — 2.0 m³/min @ 10 m; 5 hp / 3.7 kW; 6 in; Ø285 × H790 mm; 87 kg
  • BL-85.5 — 3.5 m³/min @ 6 m; 7.5 hp / 5.5 kW; 8 in; Ø340 × H923 mm; 120 kg
  • BL-107.5 — 5.5 m³/min @ 6 m; 10 hp / 7.5 kW; 10 in; Ø380 × H1015 mm; 160 kg
  • BL-1211 — 7.0 m³/min @ 7 m; 15 hp / 11 kW; 12 in; Ø430 × H1072 mm; 212 kg
CONFIGURATION AND OPERATING CONDITIONS

Data controlled by model

5. Connection — 6 / 8 / 10 / 12 in by model
6. Liquid — confirm composition, application and model
7. Temperature — 0–40 °C; confirm liquid and model
8. Pressure — Confirm by model.
9. Materials — confirm by component and model
10. Installation / operation — vertical submersible configuration; maximum depth 3 m; confirm by model
Selection note: voltage, solid passage, pressure, connection detail and accessories do not have an approved whole-family value; confirm each item by model.

05 · PERFORMANCE AND DUTY RANGE

Four BL 50 Hz curves, confirmed by exact model

Do not derive extra numerical points from the raster graph or select a pump only from the rated point. Confirm the model against the correct curve and operating data.

Flow + head + operating conditions

Check the duty point on the exact model curve together with the liquid, electrical supply, submergence condition and operating schedule.

Duty pointFlow and total head
LiquidComposition and temperature
Electrical supply3-phase, voltage and protection
InstallationDepth, connection and arrangement
BL 50 Hz CURVES

BL-63.7 · BL-85.5 · BL-107.5 · BL-1211

Four 50 Hz performance curves for BL Series

The graph uses head in metres and flow in m³/min and m³/h. Values are not digitized or interpolated from the image.

CONFIRM BY MODEL

Request the curve and duty review

Send the proposed model, flow, head, liquid, electrical supply and installation conditions to request the correct curve and selection data.

Request Curve by Model

Responsibility boundary: McKarlen supports equipment selection and product-data confirmation. System design, electrical work, piping, installation, construction and commissioning remain with the responsible project parties.

06 · MATERIALS AND CONFIGURATION

Materials confirmed by component and model

One component material is not used to describe the complete pump. Confirm the final supplied configuration by model.

OUT COVER / SHAFT

SUS304 / SUS304

Applies only to the stated components; confirm the final configuration by model.

TOP COVER / PUMP HOUSING / INSIDE TOP COVER

HT200 / HT200 / BC6

Component materials from the BL column; do not convert them into a whole-pump material statement.

SEAL / IMPELLER

SiC / SiC · ALBC3

Three BL impeller configurations by model group

Double mechanical seal and axial-flow / mixed-flow impeller; confirm the exact impeller geometry by model.

Material control: detailed materials are confirmed by component and model. The complete BL Series is not stated to be SUS304.

07 · INSTALLATION CONDITIONS

Installation and operating conditions by BL model

McKarlen provides equipment-related guidance. System design and site execution remain with the responsible project parties.

Submergence depthThe documented limit is 3 m; confirm water level and submergence conditions by model.
Liquid and temperatureDocumented range 0–40 °C; check liquid composition and component materials before selection.
Connection and arrangementOnly overall diameter and height are available; request the model drawing for connection and installation detail.
Electrical supply and protection3-phase, 50 Hz, 4P; confirm voltage, IP68, Class F and auto-cut protection for the supplied configuration.
Do not infer civil dimensions, clearances, piping, electrical details or installation geometry from the product image or overall dimensions.

08 · TECHNICAL DOCUMENTS

BL documents provided by model

Send the model, duty point and intended use to request the appropriate curve, datasheet, drawing and material confirmation.

Selection documents

Issued after confirming the model and duty point.

Pump curve50 Hz — exact BL model

Request by Model

DatasheetModel data and configuration

Request Datasheet

Configuration documents

Confirm the revision before use.

Technical drawingDimensions, connection and arrangement

Request Drawing

Material confirmationBy component, model and liquid

Request Confirmation

10 · SPARE PARTS, WARRANTY AND AFTER-SALES

Support based on the model, equipment identity and operating conditions

Provide pump photos, nameplate details, delivery records, duty point and actual operating condition for review.

Model-based spare parts

Identify parts from the model, configuration, serial details and photos of the required component.

Warranty request

Review delivery records, operating data, liquid conditions and inspection evidence.

After-sales technical support

Equipment-related guidance, data review and product-document support.

System design, electrical supply, piping, installation and operating conditions are reviewed separately before the support or warranty scope is confirmed.

11 · MODEL SELECTION

Submit the duty point to confirm a BL model

The technical team will review the data, identify missing inputs and discuss the required model, configuration and documents.

FlowHeadLiquid / temperatureElectrical supplyInstallation conditions / BOQ
Submit Pump Selection DataContact Technical Support

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