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Drum- and Containerpumps

Drum pumps and container pumps transfer low-viscosity fluids from drums, canisters, and IBCs—including corrosive and highly flammable liquids. They feature a modular design consisting of a pump, motor, and accessories.

Also available in versions for hazardous areas (ATEX 2014/34/EU) and for food contact (EC 1935/2004, FDA, 3-A).

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Pump Sets

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Drum and Container Pumps

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Motors for Drum Pumps

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Accessories for Drum Pumps

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Overview

FLUX drum pumps reliably and efficiently transfer low-viscosity liquids—from drums, IBCs, and containers—for virtually any medium and application. The modular design allows you to combine the pump, motor, and accessories as needed—quick to change, easy to carry, and ready for immediate use.

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Versatile – even for corrosive media

From acids and alkalis to fuels, food, and pharmaceuticals: FLUX drum pumps are available in stainless steel, polypropylene, PVDF, aluminum, and Hastelloy-C—tailored to the chemical requirements of the respective medium.

Maximum Safety in Hazardous Areas

The ATEX-certified FLUX drum pumps (tested in accordance with 2014/34/EU and DIN EN 13463) enable safe use with flammable and highly flammable liquids—reliably and in compliance with standards.

Certified for Food and Hygiene

The FLUX FOOD series meets the requirements of Regulation (EC) No. 1935/2004, EU Regulation No. 10/2011, FDA, and the 3A Standard—for use in food, cosmetics, and pharmaceutical facilities without compromising material compliance.

Custom Configuration Instead of a Standard Solution

Whether it’s a seal-less design for a fixed medium application, a mechanical seal for frequent medium changes, or 99.98% tank drainage—FLUX offers the right solution. Complete pump sets and custom-made products round out the portfolio.

Applications

Typical applications and uses of FLUX drum and container pumps.

Small batch sizes

JUNIORFLUX and COMBIFLUX – for containers ranging from canisters to IBCs, narrow enough for tight openings. 

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Industry & Chemicals

400 Series – high performance, versatile. Also suitable for corrosive media—acids, alkalis, and fuels.

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Explosive atmospheres & flammable media

ATEX 2014/34/EU, PTB-certified – Zone 0/1 with an explosion-proof or compressed-air motor.

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Food & Pharmaceuticals

FLUX FOOD series compliant with EC Regulation 1935/2004, FDA, and 3-A—with the glass-and-fork symbol.

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IBC emptying & dry installation

MINIFLUX container pumps for horizontal use with IBCs and containers with bottom outlets. 

Models

Rugged pump solutions for industrial, hygienic, food, and IBC applications. From lightweight to high-performance.
 

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Lightweight

COMBIFLUX and JUNIORFLUX are lightweight—easy drum changes, minimal effort. Quick motor changes using a quick-release coupling.

About JUNIORFLUX and COMBIFLUX

Greater delivery heights

F 430 PP Container Pump – Polypropylene version for higher discharge pressures and lower discharge points on IBCs and large containers.

About the F 430 PP

Horizontal IBC Use

MINIFLUX Container Pump – compact design at the IBC outlet (S60×6), 1.0 kg, no top access required. Up to 240 l/min, available for Zone 1 hazardous areas.

About MINIFLUX

Hygiene Applications at the IBC

MINIFLUX Sanitary – Compliant with FDA and EC Regulation 1935/2004, can be disassembled without tools, and can be emptied to less than 1% residual content.

About MINIFLUX Sanitary

Hygiene Applications

F 427 / FP 427 – Can be completely disassembled without tools; minimal dead space. FOOD- and 3-A-certified; up to 240 l/min. For the food, pharmaceutical, and cosmetics industries.

About the F 427

99.98% barrel and residual emptying

F 425 / FP 425 – less than 0.05 l of residual liquid in a 200-l drum. A backflow preventer prevents backflow, reducing cleaning and disposal costs.

About the F 425

Seal-free for consistent media flow

F 424 / FP 424 – for medium-viscosity fluids, without a seal. No seal or bearing wear, resistant to dry running, up to 240 l/min.

About the F 424

Mechanical seal for frequent media changes

F 430 / FP 430 – no carryover of the medium, easy to disassemble. Materials: PP, PVDF, stainless steel, and Hastelloy C; available in food-grade and Ex versions.

About the F 430

Horizontal stationary use

F 430 TR – Dry-mounted outside the housing for stationary applications with a horizontal pump shaft configuration.

Mixing and Conveying in One

F 426 – Control lever for switching between mixing and pumping during operation. No interruption to the process. Ideal for paints, coatings, and emulsions.

About the F 426

Applications

Pumps are tools—they solve problems. Which pump is the right one depends on the task:
filling, transferring, emptying, residual drainage, or mixing.

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Application Reports

FLUX drum and IBC pumps have been in use across various industries and applications for over 75 years.

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Dosing oils from IBCs with ±1% accuracy

F 430 S, F 457, FMO 110, FLUXTRONIC®, FSV 100 – Fill an extruder with a preset amount of oil; automatic shutdown when the target amount is reached.

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Safely and hygienically enhancing flavors in the ex-area

Orange oil is transferred from 200-liter drums into mixing tanks in a manner that is ATEX-compliant, hygienic, and precisely metered—using the F 430 Ex S and flow measurement.

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Mixing and Precisely Filling Coolant-Lubricants

F 426 (mixing and feed pump), F 457-1 EL – Homogenize emulsions and fill them into machine reservoirs.

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Filling Ethanol Without Loss and with Explosion Protection

FP 425 Ex S, F 460 Ex, FMC 100 – ATEX kit for the safe emptying of ethanol drums in cosmetics production.

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Filling Solvents from IBCs in an Explosion-Proof Environment

Safe filling with the F 430 S Ex, F 460-1 Ex, FMC 100, FLUXTRONIC®, and FSV 121-1.

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Knowledge and Technology

Drum pumps and container pumps are used wherever fluids need to be transferred or filled from drums, canisters, or IBCs in a clean, safe, and flexible manner. They are suitable for a variety of fluids and applications—from occasional filling to continuous industrial operation.

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Modular Design

The FLUX barrel pump operates on the principle of an axially acting centrifugal pump. The motor drives the drive shaft via a coupling; a propeller-like rotor is mounted at the end of this shaft. The rotation causes the fluid to be conveyed axially—parallel to the pump shaft—toward the discharge port. For this to occur, the impeller must be completely submerged in the fluid.

The pump, motor, and accessories can be freely combined

Based on the modular design principle, pumps, motors, hoses, dispensing nozzles, and flow meters can be freely combined. Various outer tube materials, seal types, and immersion depths allow for adaptation to different applications and fluids.

  • Components: Pump, drive, hose, dispensing nozzle, flow meter
  • Handling: Lightweight, quick-connect coupling, easy disassembly, and portable thanks to battery-powered motors
  • Performance specifications: Up to 240 l/min, up to 1,200 mPas, immersion depths 700–3,000 mm

Pump Technology in Detail

Series Comparison

Pump

Series

Seal

Special Feature
JUNIORFLUX
(F 310/F 314)		 300 Mechanical seal / seal-less Motor and pump permanently connected, for small flow rates
COMBIFLUX
(FP 314)		 300 Seal-less Detachable motor with quick-release coupling, battery- or AC-powered
F 424 400 Seal-free No seal wear, resistant to chromic acid and hydrochloric acid
F 425 400 Mechanical seal 99.98% tank drainage, backflow preventer
F 426 400 Mechanical seal Mixing and feed pump, control lever for mode selection
F 427 400 Seal-less Hygienic pump, disassembles without tools, FOOD/3-A
F 430 400 Mechanical seal 5 materials (PP, PVDF, stainless steel, aluminum, Hastelloy C), FOOD and Ex versions
MINIFLUX IBC pump Mechanical seal IBC emptying via bottom outlet, 1.0 kg total weight
MINIFLUX Sanitary IBC Pump Seals not greased: PTFE, FKM, EPDM IBC drainage for hygienic applications, FOOD/FDA CFR 2.1, easy to clean
ROTORS AND FLOW RATE

FLUX offers two types of rotors: an axial rotor for high flow rates at low pressure requirements, and a semi-axial rotor (Z-version) for higher discharge pressures at lower flow rates. All rotors are made of ETFE (ethylene tetrafluoroethylene). The Ø 38 mm axial rotor is also available in stainless steel.

Axial rotor

Semi-axial rotor (Z version)

For high flow rates

For high delivery heads
asset_image asset_image
  • Flow rate: up to 240 l/min
  • Head: up to 13 mWs
  • High flow rates with low pressure requirements
  • Light fluids (density up to 1.3 kg/dm³)
  • Short pressure lines, small height differences
  • Flow rate: up to 160 l/min
  • Head: up to 30 mWs
  • High delivery heads for heavy media (density 1.3 kg/dm³ and above)
  • Long pressure lines, large height differences
  • Compensates for pressure losses (due to valves and fittings)

Comparison of the performance curves for an F/FP 430 drum pump with an F 457 drive motor featuring a 38 mm axial rotor and a 37 mm semi-axial rotor (Z version):asset_image

 

Mechanical seal or seal-less
FLUX offers drum pumps with either a mechanical seal or a seal-less design in the wetted area. The mechanical seal prevents product carry-over during container changes, making it ideal for frequent product changes or hardening media. The seal-less design eliminates wear parts in contact with the liquid, resulting in no seal wear, optimal drainage of the inner tube, and a long service life. It is particularly suitable for applications involving hydrochloric acid and chromic acid.
 
MECHANICAL SEAL SEAL-LESS DESIGN
FLUX offers drum pumps with either a mechanical seal or a seal-less wetted tube design. The mechanical seal prevents liquid carry-over during drum or container changes, making it ideal for frequent liquid changes or liquids that harden or crystallize. The seal-less design eliminates wear parts in contact with the liquid, resulting in no seal wear, optimal draining of the inner tube and a long service life. It is particularly suitable for applications involving hydrochloric acid and chromic acid.
For frequent liquid changes and liquids that harden or crystallize For continuous use with the same liquid and abrasive liquids
• Quick and easy disassembly into main components
• Extended service life when handling abrasive liquids
• Immersion depth up to 3,000 mm (PP/PVDF version)
• Ex versions available in stainless steel and Hastelloy C
• FOOD version available in accordance with EC 1935/2004 and FDA requirements

Series: F 425, F 426, F 430		 • Optimal draining of the inner tube
• Exceptionally long service life with no seal wear
• Standard immersion depth: 700–1,200 mm
• Ex version available in stainless steel
• No FOOD version available

Series: F 424, F 427, COMBIFLUX

 

Pump Materials and Typical Applications

Material

Typical media / Applications
Polypropylene (PP) Acids, alkalis – universal standard material for chemically resistant pumping
Polyvinylidene fluoride (PVDF) Concentrated acids (e.g., sulfuric acid) – higher chemical resistance than PP
Stainless steel Solvents, cosmetics, pharmaceuticals, food – most versatile material, suitable for use in hazardous areas
Aluminum Fuels (diesel, gasoline), mineral oils, heating oils
Hastelloy C Highly corrosive acids and alkalis – highest chemical resistance

 

Pump Comparison

An overview of the most important specifications and features—for selection and comparison.

Feature

JUNIORFLUX

COMBIFLUX

F 424

F 425

F 430

F 427

MINIFLUX
 
Series 300 300 400 400 400 400 MINIFLUX
Max. flow rate 57 l/min 60 l/min 240 l/min 120 l/min 240 l/min 240 l/min 240 l/min
Max. delivery head 8.5 mWs 8.5 mWs 13 mWs 12 mWs 12 mWs 13 mWs 13 mWs
Max. viscosity 250 mPas 250 mPas 1,200 mPas 1,200 mPas 1,200 mPas 1,000 mPas  
Seal GRD / seal-less Seal-less Seal-less GRD GRD Seal-less GRD
Materials PP, PVDF, stainless steel PP, PVDF, stainless steel PP, PVDF, stainless steel PP, stainless steel, Hastelloy C PP, PVDF, stainless steel, aluminum, Hastelloy C Stainless steel Stainless steel, ETFE
Immersion depths 300–1,000 mm 500–1,200 mm 700–1,200 mm 700–1,200 mm 700–3,000 mm 700–1,200 mm –
Explosion protection – – ✓ (stainless steel) ✓ (Stainless steel, Hastelloy C) ✓ (Stainless steel, Hastelloy C) – ✓ Zone 1
FOOD / FDA – – – – ✓ ✓ –
3-A – – – – – ✓ –
Drive Electric Rechargeable battery / Electric Electric / Pneumatic / Battery-powered motor Electric / Pneumatic / Battery-powered motor Electric / Pneumatic / Battery-powered motor Electric / Battery-powered motor Electric / Battery-powered motor
Ideal for Small quantities Flexible use Corrosive media Complete emptying Frequent media changes Hygiene applications Conveying from IBCs
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The maximum flow rate is a test bench value, measured with water at 20 °C at the pump’s discharge port, without any attachments (hose, dispensing nozzle, flow meter). The flow rate achievable in practice is lower and depends on the specific application, the properties of the fluid, and the pump configuration. Specifications are for axial-rotor pumps unless otherwise noted.

The Right Drum Pump for Every Container

Users of our drum pumps and container pumps often wonder what immersion depth they actually need for their canisters, drums, IBCs, and other containers.

FLUX drum pumps are available in standard immersion depths of approximately 700 mm, 1,000 mm, and 1,200 mm. Custom lengths ranging from approximately 300 mm to approximately 3,000 mm are available upon request.

Containers Immersion Depth
Canisters approx. 500–700 mm
Drum (200 l) approx. 1,000 mm
IBC (1,000 l) approx. 1,200 mm
Large container / tank Custom lengths up to approx. 3,000 mm

 

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