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Flux has been manufacturing vertical chemical pumps since 1950. Flux F 700 series vertical immersion pumps are some of the larger pumps in our range. F 700 series models are designed for stationary installation in tanks, sumps, pits and chambers.
Highly robust and designed for continuous operation, the Flux F 700 series immersion pump range can be used for high flow chemical transfer and circulation duties. Its bushing-free, seal-less design minimises the number of wear parts, thereby allowing damage-free dry running and ensuring long-lasting durability. Typical applications include handling corrosive acids and alkalis in the chemical industry, electroplating, steel pickling and anodizing plants, PCB manufacturing, etching, flue gas decontamination, exhaust air purification and water disinfection duties.
These pumps are compact, consequently requiring very little headroom above the mounting flange. Furthermore, they use a three-phase motor with extended shaft, available in different immersion lengths for to suit your tank or sump depth. Wetted parts consist of either polypropylene or PVDF materials. In addition, a robust steel reinforced support tube connects the motor flange and the impeller housing, providing exceptional rigidity, shaft support and stability at high temperatures. This consequently guarantees smooth running and extended service life.
Finally, all F 700 series pumps are available with a suction tube extension – this extends the pump length by up to 1,500 mm (depending on model). An optional integrated inlet strainer is available for the pump inlet, or extension tube, to protect against the ingress of coarse impurities.
These pumps are available with a shaft length up to 500 mm long, with the optional extension taking overall length up to 1,500 mm. F 718 is available with a choice of two impeller housings, 115 or 135. Size 115 delivers a max flow rate of 8 m3/hr and discharge pressure 8 mwc. In comparison, size 135 delivers a max flow rate of 12 m3/hr and discharge pressure 15 mwc.
Furthermore, choose from polypropylene or PVDF materials depending on chemical compatibility and liquid temperature. Three-phase electric motors are available from 0.37 kW to 0.75 kW – selection depends on the desired performance. Do not hesitate to contact us for assistance if required.
Firstly, the F 718 immersion pump features a suspended free-flying shaft, whereby the motor shaft directly connects to the pump shaft, without the use of bushings. This bearing-free, seal-free construction eliminates common wear points, thereby ensuring extended maintenance intervals.
In addition, a steel-cored support tube reinforces the structure, preventing vibrations and ensuring smooth, quiet operation. This design guarantees a long service life, even when handling chemically corrosive fluids.
F 718 immersion pumps are available in two materials (PP or PVDF), two sizes (115 and 135) and also a choice of two impeller diameters, with selection dependent on the pumped media and the desired performance.
Please call us on 01202 823304 or email sales@flux-pumps.co.uk for assistance
The VERTIFLOW F 728 series represents a new generation of centrifugal immersion pumps, featuring modular construction and a spiral impeller housing for improved efficiency. Designed for transfer and continuous circulation of corrosive fluids, there are ten sizes available, thereby covering flow rates from 5 m3/hr up to 45 m3/hr and max discharge pressure up to 35 mwc.
Furthermore, all models are seal-less designs and shorter pumps up to 600 mm long are bush-bearing free. This reduces maintenance requirements to a minimum, whilst extending service life and providing dry run capability. However, pumps over 1,500 mm long require an additional heavy-duty shaft support bracket.
In addition, these pumps are available in three different materials: polypropylene, PVDF and PVC, with shafts in stainless steel 316 Ti, Titanium or Hastelloy C, for compatibility with a wide range of pumped media. Finally, Vertiflow is powered by three-phase IEC electric motors ranging from 0.25 kW to 5.5 kW.
Firstly, all F 728 VERTIFLOW immersion pumps feature a spiral impeller housing that delivers optimal energy consumption at high flow rates. Its open impeller can generate high pressures and handle suspended solids and fibrous material, making these pumps suitable for handling both pure fluids and waste streams.
Moreover, a choice of three construction materials provides ultimate resistance to corrosive media. In addition, a customisable support flange allows for flexible installation at depths from 400 mm to 1,800 mm. Models up to 600 mm long are bush bearing-free and thus suitable for dry running. Its seal-less construction prevents wear issues associated with mechanically sealed pumps, delivering extended maintenance intervals and cost-effective performance. Lastly, F 728 pumps are powered by a range of IEC motors from 0.25 kW to 5.5 kW.
F 728 immersion pumps are perfect for demanding chemical processes, including:
An immersion pump is a type of centrifugal pump that operates partially submerged in liquid while keeping the motor outside the fluid. They are usually installed vertically in tanks, sumps and pits. Unlike submersible pumps, immersion pumps are usually bolted to the top of a tank or container, with the liquid inlet positioned at the lowest possible level. Therefore, they comprise a long shaft with the motor on the top and the impeller housing (and thus the liquid intake) at the bottom. Pumps are typically 400 mm to 4,000 mm long. They are commonly used for continuous circulation, filtration and transfer of corrosive chemicals in industrial processes.
Furthermore, different immersion pump designs are available, to suit different applications. Some models are designed for handling pure chemicals, others can handle solids-laden or waste fluids. These pumps are often used in tough, continuous-duty applications, therefore look for efficiency-enhancing designs with spiral impeller housings and IEC motors. Wetted materials include polypropylene, PVDF, PVC, stainless steel 316, Titanium and Hastelloy-C, for optimal chemical resistance.
Models such as the Flux F 718 and VERTIFLOW F 728 offer high flow rates, chemical resistance and dry-run capability, ensuring reliable performance in demanding industrial environments.
The key difference lies in their design and operating conditions:
Immersion pumps are preferred for continuous circulation, chemical transfer and filtration in tough industrial processes, as they offer superior motor protection, easier maintenance and enhanced durability in corrosive environments.
Immersion pumps are widely used in industries requiring reliable fluid handling, circulation and chemical transfer, including:
Get in touch with our experts today
Flux F 700 series immersion pumps deliver unmatched reliability, efficiency and durability in demanding industrial applications. Whether you need a transfer pump with mechanical seal like the F 718, or a seal-less, high flow circulation pump such as VERTIFLOW F 728, our range offers exceptional chemical resistance, dry-run protection and a choice of powerful motor options.
Our expert sales team is ready to help you find the perfect immersion pump for your application. Contact us today for a consultation, technical advice and a detailed quote.
