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

• 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 

Please see our comprehensive list of media examples for our 25l drum pump, based on pump material, here.

The F 310 pump offers a strategic advantage in any operation where fluid purity, equipment longevity, and cross-contamination control are critical.

In contrast to low cost, disposable drum pumps, the F 310 incorporates a precision ceramic-oxide mechanical seal that forms a physical barrier between the pumped liquid and the motor shaft. This not only prevents ingress of fluid or solid particles into the shaft housing, but also reduces total wetted surface area, thereby reducing the risk of cross-contamination. 

The use of Hastelloy C for the driveshaft is particularly relevant when handling halogenated acids, or oxidising liquids. Hastelloy is exceptionally resistant to pitting, corrosion and stress cracking in chloride-rich environments. Combined with a tough ETFE impeller and FKM o-rings, F 310 is consequently designed to meet the challenges of corrosive chemical transfer. 

FEM 3070  motor

Moreover, the fixed FEM 3070 commutator motor is S1-rated for continuous operation, eliminating the risk of motor shut-down due to thermal overload. The selectable high / low-speed function allows the operator to vary flow rate, particularly useful when dispensing smaller amounts, or when pumping shear-sensitive fluids.