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Product code: F426

Flux F426 Mixer Barrel Pump

Pump Type - Barrel

Max Flow Rate - 14.4M³H

Max Head - 13M

Max Temp - 100°C

Max Viscosity - 1200 cst

Max Solid Passage - 2mm

Self Priming - N

Pump Materials - AISI316, PP

Inlet/Outlet Sizes - 25mm to 32mm

Drive - AC Electric, Air

Max Suction Lift - 0



£745.33 (ex VAT)

This product has a delivery lead time of 1-2 Days


F 426 Mixer Barrel Pump

Flow Rate

Up to 240 l/min

Discharge Head

Up to 13 mwc

External Tube Diameter

 41 – 50 mm

Immersion Length

1000 mm, 1200 mm


<1   -1200 cPs

Fluid Temperature

Stainless Steel 316: 0 – 100°C and 0 –   50°C for PP Models (0 - 40°C for ATEX Applications)

Pump Tube Materials (External)

Stainless Steel 316, Polypropylene

Drive Options

Commutator & Brushless Electric   Motors, Compressed Air Motors and 3-Phase Gear Motor


FLUX barrel pumps also called drum pumps are designed for transferring, emptying or dosing must existing fluids, from low to high viscosity products, these pumps are typically used for fluids that are supplied in containers such as 205 litre/45 gallon drums/barrels, 1000 litre containers called IBC's or Intermediate Bulk Container and also smaller containers 25 litre, 100 litre etc. By using a barrel pump we can avoid having to tip up the container in order to emptying it something than can often be quite dangerous and illegal thus using a drum/barrel pump is the safest and more efficient way of extracting liquid from a drum or container as wastage/spillage during the operation is next to nothing.


The pumping action and operation of the barrel pumps is quite simple, the pump tube is inserted into the opening of the container (bunghole) which typically is a 2 inch aperture, once the pump tube is immersed in the liquid the pumping action is done by the rotation of an impeller which is fitted at the bottom of the pump, the rotating impeller pushes the liquid up, towards the pump tube outlet and out of the discharge side of the pump.


There are several pump tube lengths each designed specifically for the various drums and containers available on the market, the most common are 1000 mm for 205 l drums, 1200 mm for IBC's and 700 mm for smaller containers - 25 litre jerry cans, 100 litre tanks etc.


The FLUX F426 mixer pump is as its name would indicate a pump unit capable of mixing and pumping, this unique barrel pump range has 3 operating settings, (transfer only, transfer with simultaneous mixing and mixing only), all 3 functions being adjustable whilst the pump is in operation. Furthermore, there are two levers for controlling (opening & closing) the mixing ports, mixing openings are designed to allow back flow of the products being pumped and consequently mixing back into the drum/container. These barrel pump range is available with a variety of electric and air motors in both single and 3-phase, these pumps can also be supplied as a complete pump kit containing a discharge hose, hand nozzle and compression glands depending on the specific model, carrying handles, fume glands and foot strainers are also available upon request. ATEX (explosion proof) models are also available suitable for Zoned (non-safe/hazardous) areas or applications.


Design Features/Benefits


        ATEX (explosion proof) certified for stainless steel and Hastelloy-C versions.

        Ideal solution for pumping fluids which might settle out over a period of time.

        Can be used with a hand nozzle or pump against a close valve. (Only Temporarily)

        Mechanically sealed – prevents any liquid or vapour entering the coupling/motor side.

        PP Model has steel cored internal tube for added stability.

        Available with electric or air operated motors.

        Easy to be dismantled and cleaned.

        3 different operating pump settings to choose.

        Pump functions can be switch in between whilst in operation.



Typical Fluids for Each Model/Material:



Hydrochloric acid, boric acid, sulfuric acid, citric acid, lactic acid, phthalic acid, sodium hydroxide, potassium hydroxide, ammonia water.


Stainless Steel 316:

Petroleum, diesel, heating oil, hydraulic oil, machine oil, engine oil, gasoline, formic acid (85 %), ethyl glycol, petroleum, "MEK (methyl ethyl ketone/butanone), octane, ethanol, methanol, butanol, acetan, toluene, isobutanol, propanol, xylene, urea solutions.



Motors Available & Capacity:

Commutator Motors:
FEM 4070
Flow rate max. 215 l/min
Discharge head max. 10 mwc

F 457 / F 457 EL
Flow rate max. 220 l/min
Discharge head max. 12 mwc

F 458 / F 458 EL
Flow rate max. 200 l/min
Discharge head max. 9.5 mwc

F 460 Ex / F 460 Ex EL
Flow rate max. 200 l/min
Discharge head max. 9.5 mwc

F 458-1 / F 460-1 Ex
Flow rate max. 220 l/min
Discharge head max.12 mwc

Brushless Motors:
FBM 4000 Ex
Flow rate max. 220 l/min
Discharge head max. 11 mwc

3-Phase Gear Motor:
F 414
Flow rate max. 185 l/min
Discharge head max. 11 mwc

Compressed-Air Motors:
F 416 Ex / F 416-1 Ex / F 416-2 Ex
Flow rate max. 240 l/min
Discharge head max. 13 mwc


        Trigger Guns/Nozzles

        Fume Glands

        Compression Glands

        Foot Strainers

        Carrying Handles



The standard tubeset lengths are 700 mm for smaller containers - 25 litre jerry cans, 100 litre tanks etc, 1000 mm for 205 litre drums and 1200 mm for IBC's. Other bespoke lengths are available on request.
Firstly, always check the compatibility of the materials available against the fluid being pumped. The main materials to check are the tubeset, impeller, mechanical seal and o-ring. It may be that more than one material is suitable for your fluid and selection could be based on the application type. For instance; PP, PVDF, Stainless steel and aluminium are all suitable for water. If it is a simple transfer application, then the most cost-effective material will be best. However, if it involves another variable to consider such as high temperature, then an alternative material may be a better selection.
There are various motor types, including; air motor, mains powered electric and battery. Selection is either a personal preference or due to site limitations. For instance, if mains power or an air compressor are not available on site, then a battery motor is the obvious choice. The power of the motor will be down to the application details, such as viscosity and flow rate required. An Atex motor will be required if the fluid is flammable or if the pump will be installed in a hazardous area.
A mechanically sealed pump is recommended for abrasive, crystallizing, sticky and high temperature fluids. A sealless type pump is be recommended for all other fluid types.
ATEX is an abbreviation of “Atmospheres Explosibles”. It is a regulation set out by the European Union to ensure the safety of products that are used to handle flammable products or are installed in environments containing flammable gases, vapours, mists or combustible dusts. For instance, if the pump is being installed in an explosive environment, then only the motor needs to meet the Atex standard stopping it from causing a spark during operation and igniting the atmosphere. However, if the fluid being pumped is flammable, then the pump will also need to meet Atex standards to ensure that no sparks are caused inside the pump itself when the fluid goes through it. It is crucial that an Atex rated pump or motor are used for applications involving explosive environments or flammable fluids, using a non-Atex pump or motor in these situations is extremely dangerous and contravenes health and safety standards.
Please be aware that the figures displayed relate to the largest pump from this range of products, not specific models. For details on viscosity for specific models, please refer to datasheets or contact a member of our sales team.


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