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£370.38 – £1,205.46
*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.
F 430 pumps incorporate several unique design features that differentiate them from competitors:
Mechanical shaft seals are an important component in many centrifugal pumps, including Flux F 425, F 426 and F 430 pumps. The seal is designed to stop liquid entering the drum pump inner tube, which houses the driveshaft and its support bearings. Because the impeller is immersed in the pumped fluid, the driveshaft requires a sealing mechanism to stop fluid travelling parallel to the shaft, which could result in contamination or damage to the bearings.
The hard-wearing, ceramic-oxide mechanical seal consists of a precisely machined rotating ring with a spring (positioned behind the impeller) and a stationary mating ring (fixed in the inner tube housing). Notably, the two seal faces are held in firm contact by a combination of the spring pressure and fluid dynamics. A very thin film of pumped liquid lubricates the seal faces, but liquid does not pass through the seal.
The stationary seal face is fixed and sealed with an o-ring. This o-ring stops any liquid passing around the outside of the seal face. Meanwhile, a second o-ring sits between the rotating sealing face and the spring. This o-ring accommodates thermal expansion and imperceptible misalignments, without compromising the seal. Since both o-rings are exposed to the pumped fluids, they must be manufactured from chemically resistant materials. For this reason, Flux offers mechanical seals with NBR, EPDM, FKM and FFKM o-rings. This ensures the seal is resistant to chemical attack from corrosive media such as strong acids, alkalis and solvents.
Furthermore, the mechanical seal is engineered to handle a wide range of operating pressures and temperatures. Unlike traditional packed gland type seals that will allow a small amount of continuous seepage, the F 430 mechanical seal is a long-life, high stability, leak-free barrier that prevents the pumped fluid (and any entrained solid, abrasive particles) from degrading the pump’s mechanical components.
Note, however, the mechanical seal is a wear part that requires periodic replacement. Over time, the seal faces wear until eventually liquid bypasses the seal. To prevent this (and the resulting repair bill), we therefore advise that mechanical seals are replaced preventatively every 3 years (depending on use). In very heavy duty applications, or when handling abrasive, solids-laden media, the seal may require more frequent replacement.
Firstly, choosing the right drum pump requires a comprehensive assessment of fluid properties and application parameters. You can find a list of considerations in our pump selection guide. Once you have checked the performance curves and selected the correct materials of construction, motor type etc, as outlined in our guide, you should have a good idea if the F 430 pump will suit the task at hand.
Then consider that the Flux F 430 drum pump excels in the following situations:
However, F 430 also has some limitations and downsides:
F 427 and F 430 FOOD pumps are both stainless steel, low viscosity drum pumps, suitable for handling food, beverage and pharmaceutical products. Both models are available in a range of lengths and use the same F 400 series drive motors. Performance characteristics of the two models are the same. The fundamental difference between the two pumps lies in their internal construction and intended use.
F 427 is a seal-less pump, which is ideal for transferring pure, solids-free, non-abrasive liquids. The pumped media will enter the inner tube that houses the drive shaft and bearings. Thanks to its innovative plug-in bearings, you can completely disassemble this pump for cleaning in a parts washer or autoclave.
Conversely, the F 430 pump incorporates a mechanical shaft seal that isolates the pumped fluid from the internal components, drastically reducing the wetted surface area. It takes only seconds to remove the top-pull inner tube assembly, complete with impeller, for physical cleaning or decontamination. This pump performs best when handling very high-temperature products, fluids containing hard or soft solid particles, or when you need one pump to handle several different liquids. Cross-contamination risk is also minimised, thanks to its limited surface area.
The Flux F 430 drum pump is a centrifugal design, whereby an electric or compressed air motor drives a shaft-mounted, axial (or semi-axial) impeller at high speeds (up to 10,000 RPM). The pump and motor are separate items, connected via a hand-operated union nut and a robust, replaceable coupling mechanism. The pump converts rotational energy into torque to drive the impeller, creating axial fluid flow parallel to the driveshaft.
The pump relies on gravity and atmospheric pressure to push the liquid to the pump inlet – the pump cannot create negative pressure and suck up the fluid. Therefore, the impeller must stay submerged in the fluid to operate. Once active, it propels the liquid vertically up the pump tube, then out through the side discharge port at the top. Axial impellers prioritise flow efficiency, consequently delivering high flow rates with relatively low discharge pressure. Therefore, these pumps are suitable for most simple drum and IBC transfer tasks. For higher discharge pressure and handling higher viscosity, or higher density fluids, F 430 drum pumps can be specified with a semi-axial impeller. Thanks to the screw on foot-piece, impeller replacement is simple and takes just a few minutes.
The F 430 pump incorporates a mechanical shaft seal, positioned at the end of the inner tube, behind the impeller. This seal prevents the pumped medium from entering the inner tube, protecting the driveshaft and bearings from exposure to corrosive, or abrasive fluids. Plastic pumps (constructed primarily from PP and PVDF materials) incorporate our unique, over-moulded, steel-cored inner tube. Importantly, this adds considerable rigidity to the pump tube, for resistance to torsional forces and elimination of damaging vibrations that often cause the premature failure of less robust pumps.
The pump’s heavy-duty brass bearings further support the driveshaft, reducing radial and axial loads to maintain alignment and ensure smooth operation in heavy-duty applications. This results in lower noise and vibration, enhancing operator safety and comfort while contributing to extended service life.
Designed for high discharge pressure
For industrial IBC pumping processes that demand greater discharge pressure, for instance, pumping to higher floors, mezzanines, or the top of mixing vessels, the Flux F 430 PP 100/50 high-performance variant provides the optimal solution. It is specifically engineered for tank and IBC fluid transfer, featuring a large 50 mm closed, high-strength impeller mounted in an over-size 100 mm diameter housing. We offer this pump exclusively in polypropylene material. Pumps are available in three lengths – 1,000 mm, 1,200 mm and 1,500 mm.
When paired with a high-output 800 W electric motor, or 900 W compressed air motor, the F 430 high-performance IBC pump can achieve discharge pressures exceeding 3 bar and flow rates up to 105 l/min. This makes it particularly effective for transferring low-viscosity fluids vertically to higher levels, such as overhead pipe systems, or when pumping long horizontal distances with significant pressure losses. However, this pump is not suitable for use in closed (tight-head) barrels and drums, as the 100 mm impeller housing will not fit through the container opening.
To purchase this pump, please contact our sales team. For continuous duty tank circulation and filtration tasks, please take a look at our heavy-duty vertical immersion pumps.
*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.
This F 430 high pressure pump is suitable for demanding applications, such as transferring aqueous solutions, cleaning products, sanitisers, dilute acids and alkalis at high discharge pressures. If your application involves pumping to elevated tanks, mezzanine floors, or through long pipe runs, the performance capability of this high-pressure F 430 IBC pump surpasses any standard drum pump. Furthermore, the pump’s modular design with detachable motor provides safe manual handling, essential for processes involving multiple fluid changes or hazardous materials. Further application examples include:
The pump can handle many common liquids, such as:
While the standard F 430 is an excellent all-purpose drum and container pump, the high-pressure F 430 PP 100/50 has been specifically optimised for more demanding delivery applications. The pump incorporates the following features:
Flux F 424 Drum Pump – Seal-less design for general industrial use
Flux Drum Pump Accessories – Nozzles, hoses and motors compatible with F 430
Lastly, Flux Technical Downloads – Manuals, data sheets and CAD files
