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QDL vertical multistage centrifugal pump

Vertical Multistage Pump

Vertical Multistage Pump

Vertical multistage delivery for boosting and treatment.

The QDL vertical multistage pump is a non-self-priming design for clean-liquid boosting, transfer and water treatment. Review the inlet supply, required flow and pressure, liquid temperature and selected material version before choosing a configuration.

Installation
Vertical, non-self-priming
Wet end
Wetted materials selected for the liquid and temperature
Sealing
Seal and temperature version to suit duty
Drive
Vertical electric drive
Open original source PDF ↗

models

Vertical Multistage Pump models & specifications

Check model references against the original performance table, speed, materials and operating conditions.

Original catalogue model references; open source for performance data
Model referenceCatalogue scopeSpecificationsEnquiry
25QDL2-2Shared family catalogueSource PDF ↗
25QDL2-3Shared family catalogueSource PDF ↗
25QDL2-4Shared family catalogueSource PDF ↗
25QDL2-5Shared family catalogueSource PDF ↗
25QDL2-6Shared family catalogueSource PDF ↗
25QDL2-7Shared family catalogueSource PDF ↗
25QDL2-8Shared family catalogueSource PDF ↗
25QDL2-9Shared family catalogueSource PDF ↗
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This source covers related versions. Model codes retain the printed notation; confirm the applicable series and curve.

QDL and QDLS share the supplied catalogue. The model index retains the catalogue codes; confirm the exact nameplate, hydraulic table and material version.

configurations

Available configurations

Configuration 1

A non-self-priming vertical multistage pump for clean-liquid boosting, transfer and water treatment. QDL and QDLS share the supplied catalogue. The model index retains the catalogue codes; confirm the exact nameplate, hydraulic table and material version.

Configuration 2

A QDLS vertical multistage pump for boosting and treatment duties with a suitable clean-liquid inlet supply. The supplied QDL/QDLS literature mixes names and model-table notation. Shared catalogue entries do not establish that every QDL configuration is a QDLS configuration.

overview

Vertical Multistage Pump construction and operation

Vertical Multistage Pump: illustrative pump assembly and construction

Non-self-priming vertical multistage pump

The pump is installed vertically in the pipe system. Verify the flange arrangement, inlet conditions, motor access and support loads against the selected drawing.

A non-self-priming vertical multistage pump for clean-liquid boosting, transfer and water treatment.

  • Non-self-priming vertical multistage construction
  • Coaxial inlet and outlet arrangement
  • Liquid must be free of solids and fibres and compatible with the selected materials

AI-generated family illustrations. The selected configuration follows the agreed model and drawing.

construction

Components, materials and seals

Multistage hydraulic stack concept for Vertical Multistage Pump

Multistage hydraulic stack

Select the stages and impeller combination from the applicable QDL/QDLS table.

In-line connections concept for Vertical Multistage Pump

In-line connections

Coaxial inlet and outlet connections support a compact vertical installation. Confirm the flange dimensions.

Materials & sealing concept for Vertical Multistage Pump

Materials & sealing

Choose materials and the standard or high-temperature arrangement for the actual liquid.

Motor & protection concept for Vertical Multistage Pump

Motor & protection

Direct coupling links motor and pump shafts. Dry-run, phase-loss and overload protection require an agreed configuration.

AI-generated family illustrations. The selected configuration follows the agreed model and drawing.

duty requirements

Materials, sealing & duty requirements

Vertical Multistage Pump: illustrative wetted materials and sealing components

Review medium name and composition, required flow, total head, operating temperature, suction conditions, installation arrangement, power supply and drive method, materials, standards and inspection requirements, required supply scope together with the liquid composition, temperature and installation. The values on a catalogue page are not a substitute for checking the selected model curve and approved arrangement.

Wetted componentsWetted materials selected for the liquid and temperature
SealingSeal and temperature version to suit duty
Liquid / design limitsClean liquid, without solids or fibres
medium name and compositionInclude this information in the duty review and model selection
required flowInclude this information in the duty review and model selection
total headInclude this information in the duty review and model selection
operating temperatureInclude this information in the duty review and model selection
suction conditionsInclude this information in the duty review and model selection
installation arrangementInclude this information in the duty review and model selection
power supply and drive methodInclude this information in the duty review and model selection
materials, standards and inspection requirementsInclude this information in the duty review and model selection
required supply scopeInclude this information in the duty review and model selection

AI-generated family illustrations. The selected configuration follows the agreed model and drawing.

installation

Installation & drive arrangement

Vertical Multistage Pump: illustrative installation and drive arrangement

Vertical in-line arrangement

Check flange positions, mounting, pipe supports and the available inlet supply against the selected drawing.

Motor removal & protection

Allow overhead maintenance clearance and specify power supply, controls and required protection functions.

Before installation

  • Foundation / mounting and pipe supports
  • Liquid supply and discharge connections
  • Electrical supply and maintenance access
Discuss the installation

AI-generated family illustrations. The selected configuration follows the agreed model and drawing.

applications

Typical applications

Application illustration: reverse-osmosis water treatment

building water supply

For building water supply, state demand, pumping water level, source quality and seasonal operating range. Check the proposed arrangement against vertical, non-self-priming and wetted materials selected for the liquid and temperature, then verify the operating point on the selected model curve.

industrial boosting

For industrial boosting, provide inlet pressure, target outlet pressure, peak demand, control method and the number of operating zones. Check the proposed arrangement against vertical, non-self-priming and wetted materials selected for the liquid and temperature, then verify the operating point on the selected model curve.

water treatment

For water treatment, check the applicable product curve, liquid properties, required operating point and installation geometry. Check the proposed arrangement against vertical, non-self-priming and wetted materials selected for the liquid and temperature, then verify the operating point on the selected model curve.

irrigation

For irrigation, state demand, pumping water level, source quality and seasonal operating range. Check the proposed arrangement against vertical, non-self-priming and wetted materials selected for the liquid and temperature, then verify the operating point on the selected model curve.

supply scope

Choose the supply scope for this pump

Define the pump configuration, installation interfaces, controls and documents in the quotation.

Pump assembly illustration for Vertical Multistage Pump

Pump assembly

Hydraulic end, materials, sealing and interfaces for your driver or installation.

Electric pump set illustration for Vertical Multistage Pump

Electric pump set

Pump and matched motor, coupling / transmission, base and guarding as applicable.

Installation & controls illustration for Vertical Multistage Pump

Installation & controls

Agreed supports, controls, auxiliaries, spares and technical documents.

AI-generated family illustrations. The selected configuration follows the agreed model and drawing.

manufacturing

From preparation to shipment

Foundry workers pouring molten metal into a pump-component mold

Casting of pump components

Casting produces pump components to the construction and material requirements of the selected equipment. The applicable alloy, pattern and component geometry depend on the pump family and the agreed operating conditions.

Operator working at a large machining machine in the workshop

Finish machining

Machining prepares mounting faces, bores, fits and connection interfaces for assembly. OEM parts should be reviewed against the approved drawing and revision, including the dimensions that determine interchange and installation.

Pump castings staged for manufacturing

Component handling & staging

Owner-supplied factory photograph showing pump castings staged in a work area. The exact parts and process route depend on the selected order.

Factory test-control equipment

Inspection equipment & controls

Owner-supplied factory photograph showing test-control equipment. The inspection points and acceptance records must be agreed for the selected equipment.

View manufacturing

documents

Technical documents

Model-specific documents

Request the selected model curve, arrangement drawing, materials, installation instructions and agreed inspection records.

Request technical documents

questions

Vertical Multistage Pump FAQs

How do I select a model?

medium name and composition; required flow; total head; operating temperature; suction conditions; installation arrangement; power supply and drive method; materials, standards and inspection requirements; required supply scope. Review the complete duty on the applicable model curve.

Which materials and sealing can be supplied?

Wetted materials selected for the liquid and temperature. Seal and temperature version to suit duty. Confirm compatibility with the complete liquid composition and temperature.

Are catalogue model references guaranteed duty points?

Catalogue ranges summarize printed records and may combine different conditions. Check each model against its source curve and required speed.

What is included in the delivery?

Confirm pump, driver, controls, auxiliaries, spares, drawings, manuals and required test records in the agreed quotation.

enquiry

Tell us about your pump duty

Describe the liquid, required output and site arrangement so BBP can review the model and equipment scope.

  • medium name and composition
  • required flow
  • total head
  • operating temperature
  • suction conditions
  • installation arrangement
  • power supply and drive method
  • materials, standards and inspection requirements
  • required supply scope

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+86 182 1085 0516

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