Drum and container pump brochure
Drum Pump Questionnaire
F424 spec sheet
High Temperature (HT) version brochure
Performance curves
Dimensional drawings
EC Declaration of Conformity Drum pumps
EC-Type-Examination Certificate FP 424
Operating manual
F424 PP/F424 PVDF 41MM maintenance kit
F424 PP/F424 PVDF 50MM maintenance kit
F424 EX S maintenance kit
Spare parts list
- FLUX en-US
- Products
- Drum & container pumps
- FLUX 400 series
F424 Sealless Pump
Sealless design






The sealless F/FP 424 is ideal for transferring various low-viscosity and aggressive media. It is suitable for free-flowing liquids that are clean and non-abrasive. Best paired for use with drum, totes, IBCs, etc. (custom lengths are available upon request). The distinct FLUX advantage lies in spiral-shaped guide bearing in the inner tube which prevents a build-up of media in the pump and increases the service life significantly. The pump is available in stainless steel, polypropylene or polyvinylidene fluoride (PVDF). The F/FP 424 in stainless steel can also be used in explosion proof environments.
Product attributes
- Sealless pump design means no seal wear
- Long spiral-shaped guide bearing and steel cored inner tube promote long service life
- Extended bearing life due to radial shaft seals prevent corrosive vapors and liquid in the coupling area
- ATEX versions for use in hazardous areas
- Can be temporarily operated against a closed valve, hand nozzle, etc.
- Special construction available for transferring AdBlue®DEF fluid
- Can be paired with all 4 Series FLUX motors
Technical Data
- Flow Rate: max 63 GPM
- Delivery Head: max 98 ft
- Viscosity: <1 - 1200 cPs
- Outer Tube Diameter: 40 mm - 50 mm
- Standard Immersion Lengths: 27, 39, 47, 60 in (700, 1000, 1200, 1500 mm)
- Materials of Construction: Polypropylene, Polyninyldene fluoride (PVDF), Stainless Steel
- Temperatures to 212°F (100°C)
- Fluid Examples: Acids, Alkalis, Petroluem products, Flammables, Solvents, Fuels, Aqueous salt solutions, Aggressive chemicals
- Seal: sealless
- Containers: Small containers, Hobbocks, 55 Gal Drums, totes, IBCs
- Related videos
- Related literature
- Sample fluids
Polypropylene Outer Tube:
Hydrochloric acid, boric acid, sulfuric acid, citric acid, lactic acid, phthalic acid, sodium hydroxide, potassium hydroxide, ammonia water
PVDF Outer Tube:
Hydrobromic acid, chromic acid, chloric acid, hydrofluoric acid (hydrofluoric acid), battery acid, nitric acid, nitrous acid, sulfuric acid, acetic acid to 80 %, methyl sulfuric acid, perchloric acid, peracetic acid, phosphoric acid, potassium (Javelle water), sodium hypochlorite (sodium hypochlorite), sodium chloride (table salt), potassium chloride, sodium sulfate, sodium carbonate
Stainless Steel Outer Tube:
Petroleum, diesel, heating oil, hydraulic oil, engine 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, white spirit, diesel - Motor options
Electric motors
FEM 4070
Delivery rate max. 56 GPM
Delivery head max. 85 ftF 457 / F 457 EL
Delivery rate max. 58 GPM
Delivery head max. 98 ftF 458 / F 458 EL
Delivery rate max. 52 GPM
Delivery head max. 75 ftF 460 Ex / F 460 Ex EL
Delivery rate max. 52 GPM
Delivery head max. 75 ftF 458-1 / F 460-1 Ex
Delivery rate max. 58 GPM
Delivery head max. 91 ftBrushless motor
FBM 4000 Ex
Delivery rate max. 58 GPM
Delivery head max. 98 ftThree-phase gear motor
F 414
Delivery rate max. 48 GPM
Delivery head max. 68 ftAir motors
F 416 Ex / F 416-1 Ex / F 416-2 Ex
Delivery rate max. 63 GPM
Delivery head max. 98 ftThe maximum delivery rate is a test bench value, measured with water at 20°C at the pressure port of the pump, without accessories (hose, nozzle, flow meter). The practically achievable delivery rate is lower. It depends on the individual application, the fluid properties and the pump configuration. Please refer to technical data sheets / performance diagrams.