Flux F 310 Polypropylene JuniorFlux 25L Drum Pump with Mechanical Seal

The Flux F 310 25L drum pump is a compact, robust solution for efficiently transferring small volumes of pure, abrasive, or crystallising liquids. Designed for smaller containers and 25-litre drums, the pump utilises a precision-engineered mechanical seal. The mechanical seal isolates the medium from the motor shaft and bearings. This significantly enhances service life when handling liquids containing abrasive, suspended solids, or substances that tend to precipitate or crystallise. These pumps are available with either 25 mm or 32 mm diameter immersion tube. Selection will depend on container opening size and desired flow rate. Furthermore, the pump is supplied with the FEM 3070 two-speed electric motor. Options are available for either 230V or 110V single-phase power supply.

Flow rate choices

The user can select the motor speed to switch between high flow and low flow. High flow empties containers quickly, while low flow handles foaming liquids or dispenses into smaller containers. Moreover, Flux manufactures all pumps and motors entirely in Germany. They use high-performance materials such as stainless steel 316 Ti, virgin polypropylene, Hastelloy C, PTFE and ETFE. Therefore, this pump handles continuous-duty operation in demanding lab and industrial applications with ease. 

Part numbers available

The following part numbers are available on our online shop:

• 10-31041005
• 10-31041007
• 10-31041010
• 10-31042005
• 10-31042007
• 10-31042010
• 10-31041205
• 10-31041207
• 10-31041210
• 10-31042205
• 10-31042207
• 10-31042210

• Pump type: F 310 PP centrifugal drum pump with ceramic-oxide mechanical seal  

• Outer tube material: Polypropylene (PP) 

• Driveshaft: Hastelloy C 

• Inner tube: Reinforced polypropylene (fluid excluded from shaft housing) 

• Impeller: ETFE axial (chemical resistant) 

• O-rings: FKM 

• Immersion lengths: 500 mm and 700 mm (for small containers and hobbocks), 1000 mm (for 200 l drums)  

• Outer tube diameters: 25 mm and 32 mm 

• Outlet connection: G 1 A 

Motor type:

FEM 3070 brushed commutator motor, with two-stage speed control 

• Power supply: 230 V or 110 V (50–60 Hz) 

• Ingress protection: IP 24 

• Power rating: 230 W 

• Duty cycle: S1 continuous duty 

• Housing type: Single-walled, internally ventilated, double insulated (Class II) 

• Housing material: Polyamide 

• Weight: 1.5 kg 

• Max ambient temperature: -20 to + 40 degrees C 

• Cable length: 5 m  

• Plug type: UK 3-pin plug adaptor included with 230 V motor 

• Overload protection: Integrated cut-out 

• Certifications: UKCA, CE, VDE-GS 

Total weight (pump + motor): 1.8 – 2.1 kg 

Please note a hose connection is not included and must be purchased separately.  

• Max flow rate: Approx. 27 L/min1 (25 mm version) and 48 L/min1 (32 mm version) 

• Max discharge pressure: Approx. 5.0 mwc (25 mm) and 6.9 mwc (32 mm) 

• Maximum liquid temperature: 45 degrees C 

• Max density:  Approx. 1.3 g/cm³ (under continuous use) 

• Max viscosity: Approx. 250 mPas (under continuous use) 

• Dry run limitations: Not suitable for dry running (see alternative F 314 model) 

*Measured with water at 20 degrees C in open flow condition 

Acid and alkali dosing

In laboratory, metal recovery & plating, or water treatment applications (e.g., dilute sulphuric acid, sodium hydroxide, dilute nitric acid, hydrochloric acid) 

Transfer of crystallising media, or media with suspended solids

Such as phosphoric acid, urea solution, wastewater, waste coolant with cutting swarf. 

Dispensing of cleaning agents, sanitisers or detergent concentrates

With foaming or abrasive properties 

Handling aqueous salt solutions

In chemical preparation or buffer storage systems 

Filling smaller vessels or containers

With disinfectants or degreasers 

Liquid fertiliser applications

In production areas and agricultural settings