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Price range: £1,291.31 through £1,318.44
*Measured with water at 20 degrees C in open flow condition. The maximum figures listed above are dependent on the application, fluid properties and the pump configuration. Please refer to technical data sheets or performance diagrams.
**dependent on pump type, diameter and motor.
When product homogeneity and uniformity is critical, the Flux F 426 drum mixer delivers an unparalleled combination of mixing and transfer functionality. This is done within a single, precision-engineered pump.
Importantly, the F 426 eliminates the requirement for a standalone agitator or recirculation system, along with a separate pump. Therefore, reducing capital expenditure, maintenance complexity and additionally potential contamination points.
The F 426 is ideal for handling low viscosity, low density, non-adhesive media that are prone to phase separation. Alternatively, it is suitable for liquids that require consistent agitation during transfer. For example, re-suspending solids in coating materials and homogenising reagents in pharmaceutical, or fine chemical manufacturing.
Moreover, these operations traditionally require separate mixing and pumping equipment, creating bottlenecks and requiring repeated manual handling.
The F 426 is a high-shear mixer with a 38 mm diameter centrifugal impeller. The impeller spins at speeds up to 10,000 RPM, driving the liquid up the pump tube and out through the mixing ports. Continued operation thereby re-circulates the media repeatedly in the drum or IBC.
Note, however, that F 426 is not suitable for use with shear-sensitive, highly foaming, high density or high viscosity liquids.
The user selects mixing or pumping functionality using adjustable levers at the top of the pump tube. The levers open and close four re-circulation ports in the outer pump tube, consequently redirecting flow from the pump impeller.
Mode selection may be undertaken with the motor running. Thus providing seamless changeover between pumping, simultaneous pumping and mixing, or recirculation modes, without interrupting the process.
Furthermore, these pumps are available in either corrosion-resistant polypropylene or stainless steel 316 materials. The polypropylene version features the unique Flux high-strength steel-reinforced inner tube, for ultimate vibration resistance and structural integrity.
To conclude, the F 426 is a flexible, lightweight, cost-effective solution for occasional low viscosity drum mixing applications when a dedicated mixer is impractical.
Yes – and it’s engineered with efficiency in mind.
Therefore, this pump enables users to carry out high-shear mixing and volumetric transfer using a single device, simplifying process layout, reducing cost and improving operational safety.
Unlike conventional, single-function stirrers and top-mounted agitators, which may have limited mobility, the F 426 is a compact, lightweight design. Central to the F 426’s configuration is its adjustable mixing system.
Four mixing ports control pumping or recirculation, by directing some or all of the pumped liquid back into the container. This delivers uniform dispersion of additives, thermal equalisation, or reactivation of settled materials.
When fitted with a high-torque electric or compressed-air motor, the F 426 can handle fluids up to 400 mPas, making it suitable for emulsions, coagulated liquids and liquid suspensions. The ATEX-compatible stainless steel version ensures that flammable liquids and explosive atmospheres are no barrier to performance. Note that you must use an appropriate ATEX-certified motor.
In practical terms, the F 426 eliminates the need to transfer media between separate containers for mixing and discharge. This consequently reduces the risk of spills, cross-contamination and operator exposure to hazardous vapours. This is especially useful in sectors such as chemical processing, paint and coatings and agrochemical production.
Flux F 424 and F 426 pumps are similar vertical, centrifugal pumps that share high chemical resistance and wide range of compatible motor options. However, they serve fundamentally different process needs.
Firstly, the F 424 is a seal-less, high flow transfer pump that excels in handling pure, non-crystallising liquids that do not contain solid particles. Furthermore, its seal-free, heavy-duty design with oversized bearings makes it ideal for applications prioritising minimal maintenance and high uptime.
You can use it for re-circulation tasks; however, it does not handle drum mixing. Finally, the F 424 serves as a traditional drum (or IBC) pump for handling pure, pre-mixed fluids that do not require any further mixing before discharge.
In contrast, the F 426 is focussed more on in-drum mixing, with its pumping function used primarily to empty the mixed product from the container, once the mixing process is complete. The F 426 utilises a hard-faced mechanical seal that stops the media from entering the pump inner tube and bearings. Therefore it is suitable for handling crystallising and solids-laden liquids, as well as pure liquids.
The manually actuated mixing ports provide on-demand agitation and container emptying functionality within the same pump. In addition, it is especially useful when media separation, settling of solids, or emulsification challenges are present.
In summary, the F 424 is ideal for straightforward transfer tasks, while the F 426 can handle more complex applications that require both mixing and drum dispensing.
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