F 425 Flux Barrel Pump – 99.9% Drum Emptying

The F 425 barrel pump has been developed for industrial applications where operator safety and / or reduction in residual waste is critical. 

Part numbers available

• 10-42529113
• 10-42529111

Pump type:

• F 425 centrifugal barrel pump with ceramic-oxide mechanical seal
• Ex-classification: Ex II 1/2 G c IIB T4 (stainless steel and Hastelloy C versions only)
• Outer tube material: Polypropylene (PP), Stainless Steel 316 Ti or Hastelloy C 
• Driveshaft: Hastelloy C, Stainless Steel 316
• Inner tube: Steel-cored polypropylene, Stainless Steel 316 Ti or Hastelloy C
• Impeller: ETFE axial impeller, optional semi-axial (Z) impeller
• O-rings: FKM (optional FFKM, EPDM available – please contact us)
• Immersion lengths: 1000 mm (for 200 l barrels), 1200 mm (for 1,000 l IBCs) (700 mm for smaller containers available upon request)
• Outer tube diameter: 40 mm – 50 mm depending on material and configuration
• Outlet connection: G 1 1/4” A BSPP
• Suitable for use with F 414, F 416 Ex , FEM 4070, F 457, F 458, F 460 Ex and FBM 4000 Ex motors
• Please note that a hose connection is not included and must be purchased separately.

• Max flow rate: Approx. 120 L/min*1
• Max discharge pressure: Approx. 26 mwc*1
• Maximum liquid temperature: 50 degrees C (PP version) 100 degrees C (stainless steel version) 120 degrees C (Hastelloy C version) 
• Max density: Approx. 1.8 g/cm³
• Max viscosity: Approx. 1,000 mPas
• Dry run limitations: Not suitable for sustained dry-running
• Solids handling:  Not recommended for handling large quantities of solid particles (see pump model F 430)

*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.

Please see our comprehensive list of media examples suitable for the F 425, based on pump material, here.

High-value liquids

Engineers and process technicians handling high value, or hazardous chemicals require efficient, safe pumps. In addition, the elimination of unnecessary waste and potentially dangerous spills is a top priority. The Flux F 425 barrel pump is uniquely designed for this purpose.

Furthermore, its flowback stop valve can be activated while the pump is still running. Therefore, retaining liquid inside the pump body and discharge hose, and consequently eliminating drain-back.

In addition, compared to standard centrifugal barrel pumps, which can leave several litres of residual liquid in the container, the F 425 cuts waste by over 95%. This translates into cost savings, not only through a reduction in waste, but also through lower barrel cleaning costs and time lost to spill clean-up. 

Finally, the ability to retain liquid inside the pump reduces operator exposure to potentially hazardous media.

Combine with our FES fume gland when handling dangerous or toxic liquids

Plus, when handling dangerous or toxic liquids, the F 425 barrel pump can be used in conjunction with our FES fume gland.

This reduces emissions of hazardous vapours and further reduces safety risks for the operator. 

We recommend the F 425 for:

• Hazardous area use and handling dangerous, highly flammable, or highly toxic liquids  (ATEX-rated Stainless Steel 316 and Hastelloy C versions available)
• Chemical dosing and precision batch dispensing
• Handling high value products, such as cosmetic fragrance oils and perfumes
• Operations requiring strict vapour or contamination control
• Heavy-duty use in industrial barrel emptying applications

F 425 can be powered by any F 400 series drive motor, however, pumps used in Ex applications require an Ex-approved motor.