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F 426 – Drum Pump for Mixing and Conveying

Mixing and transferring with a single pump

The F 426 drum pump is designed for mixing and transferring fluids that tend to separate or must remain in motion during the transfer process. A control lever allows operators to switch between mixing and transferring while the pump is running.

Depending on the version, the F 426 is available in polypropylene or stainless steel and can be combined with various FLUX motors. Stainless-steel versions are also available for use in potentially explosive atmospheres.

View F 426 Models Compatible Motors

Features

  • For mixing and/or conveying non-homogeneous liquids
  • Two control levers for easy opening and closing of the mixing ports
  • Mixing ports allow the medium to flow back into the container for mixing
  • With a mechanical seal to seal the inner tube
  • Inner tube with metal core for PP (robust, no deformation)
  • Can be combined with various motors as needed

Advantages

  • 3 operating modes in a single pump:
    • Pumping,
    • pumping with simultaneous mixing,
    • and temporary pure mixing mode
  • Operating modes can be switched during operation
  • Easily disassembled for cleaning
  • Unique to FLUX: The metal-core-reinforced inner tube in the PP version. It prevents leaks and unnecessary wear on the mechanical seal across all operating temperature ranges
  • Temporary operation against a closed valve (dispensing nozzle, ball valve, etc.) is possible up to the specified maximum operating temperature
  • The stainless steel version is also suitable for use in hazardous areas

Media Examples

 

  • Emulsions
  • Mineral oil products
  • Solvents
  • Highly flammable substances
  • Acids
  • Alkalis
  • Cleaning agents
  • Fluids containing components that tend to separate

Note: Specific suitability depends on the selected material, seal, and motor design.

F 426 Models

Select the appropriate model based on material, seal, immersion depth, and explosion-proof requirements. You’ll find the exact technical specifications and part numbers for each variant on the product detail pages.

View all barrel pumps
Variants available
F 426 S-41/38 | FKM
F 426 S drum pump
F 426 S-41/38 | FKM
for mixing and/or pumping out of drums. Made from stainless steel, FKM seal.
for use in haz. area:
yes
FOOD approval:
no
material:
Stainless steel
Show product
Variants available
F 426 S-41/38 | FFKM
F 426 S drum pump
F 426 S-41/38 | FFKM
for mixing and/or pumping out of drums. Made from stainless steel, FFKM seal.
for use in haz. area:
yes
FOOD approval:
no
material:
Stainless steel
Show product
Variants available
F 426 PP-50/33 | FKM
F 426 PP drum pump
F 426 PP-50/33 | FKM
for mixing and/or pumping out of drums. Made from polypropylene, FKM seal.
for use in haz. area:
no
FOOD approval:
no
material:
Polypropylene
Show product

Technical Specifications

The technical specifications depend on the pump model, motor, and fluid.

Characteristic Specification
Maximum flow rate up to 240 l/min
Maximum head up to 13 mWS
Viscosity approx. 1 to a maximum of 1,200 mPas
Immersion depths 1,000 or 1,200 mm, depending on the model
Outer tube diameter Approx. 41 to 50 mm, depending on the model
Outer tube material Polypropylene or stainless steel
Rotor material Model-specific
Seal Mechanical seal
Operating modes Mixing, mixing and pumping, pumping
Explosion-proof version Available for selected stainless steel variants
Motors Can be combined with various FLUX motors
Containers Drums and similar containers

The maximum flow rate is a test bench value. The flow rate achievable in practice depends, among other factors, on the motor, pump model, fluid, viscosity, hose length, pipe cross-section, and head.

Comparison of F-426 Variants

Selection Criteria Available Options
Pump Material Polypropylene, stainless steel
Seal Variants Depending on the specific model
Immersion depth 1,000 mm, 1,200 mm 
Explosion-proof suitability Selected stainless steel variants
Motorization Various commutator, brushless, three-phase, and pneumatic motors; battery-powered motor 
Applications Standard applications, chemical media, highly flammable media

 

Compatible Motors for the F 426 Drum
Pump

Depending on the pump model and application, the F 426 can be paired with various FLUX motors.

View All Engines
FBM 4100 | 420 W | IP 24
FBM 4100 Core battery motor
FBM 4100 | 420 W | IP 24
cordless battery motor for FLUX drum and container pumps.
battery:
without battery Ah
charger:
without charger V
for use in haz. area:
no
rated output:
0,42 kW
Show product
FBM 4100 | 420 W | IP 24
FBM 4100 Pro battery motor
FBM 4100 | 420 W | IP 24
cordless battery motor with peripheral interface.
battery:
without battery Ah
charger:
without charger V
for use in haz. area:
no
rated output:
0,42 kW
Show product
Variants available
FEM 4070 | 500 W | 230 V | 50 Hz
FEM 4070 commutator motor
FEM 4070 | 500 W | 230 V | 50 Hz
The compact drum pump motor with undervoltage protection
for use in haz. area:
no
rated output:
0,5 kW
supply voltage:
230-240 V
version motor:
commutator motor
Show product
Variants available
F 458-1 | 700 W | 230 V | 50 Hz
F 458-1 commutator motor
F 458-1 | 700 W | 230 V | 50 Hz
The robust drum pump motor without undervoltage protection
for use in haz. area:
no
rated output:
0,7 kW
supply voltage:
230-240 V
version motor:
commutator motor
Show product
Variants available
F 460 Ex EL | 460 W | 230 V | 50 Hz
F 460 Ex EL commutator motor
F 460 Ex EL | 460 W | 230 V | 50 Hz
The robust drum pump motor with explosion protection, with speed setting, with undervoltage protection.
for use in haz. area:
yes
rated output:
0,46 kW
supply voltage:
230-240 V
version motor:
commutator motor
Show product
Variants available
F 457 EL | 800 W | 230 V | 50 Hz
F 457 EL commutator motor
F 457 EL | 800 W | 230 V | 50 Hz
The most powerful commutator motor, with speed setting, with undervoltage protection.
for use in haz. area:
no
rated output:
0,8 kW
supply voltage:
230-240 V
version motor:
commutator motor
Show product
F 416 Ex | 470 W | 14 l/s
F 416-2 Ex compressed air motor
F 416 Ex | 470 W | 14 l/s
with spherical valve
motor type:
F 416-2 Ex
other comp-air mot.:
with actuating valve
rated output:
0,47 kW
Show product
F 416 Ex | 470 W | 14 l/s
F 416 Ex compressed air motor
F 416 Ex | 470 W | 14 l/s
with lockable actuating valve.
motor type:
F 416 Ex
other comp-air mot.:
with actuating valve
rated output:
0,47 kW
Show product
F 416 Ex | 470 W | 14 l/s
F 416-1 Ex compressed air motor
F 416 Ex | 470 W | 14 l/s
without valve.
motor type:
F 416-1 Ex
other comp-air mot.:
without valve
rated output:
0,47 kW
Show product

Downloads

All documents, catalogs, and technical documentation for the F 426 in one place. 

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All documents, catalogs, and technical documentation related to drum pumps. Select a category to find the documents you're looking for.

Operating Instructions

Operating instructions for drum and IBC pumps.

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Dimension Sheets

Dimensions and installation dimensions for technical planning and design.

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Data Sheets

Technical specifications, dimensions, and performance data.

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Performance Curves

Flow rate, head, and performance curves for precise pump selection.

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Certificates & Evidence

Declarations of conformity, ATEX/IECEx certificates, as well as ISO, REACH, and other certifications.

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Product Catalog

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Brochures

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