Diesel Transfer Pump 80L/min
Description
The Gespasa 12V / 24V Diesel Transfer Pump is a heavy duty, continuous-duty fuel transfer pump designed for bulk diesel transfer where mains power is not available. Delivering approximately 70-80 L/min free flow, these pumps are ideal for refuelling machinery, transferring fuel between tanks and servicing remote agricultural, construction and industrial equipment.
Unlike many low-voltage diesel pumps that are limited by short duty cycles, the Gespasa AG-90 range uses a 0.37kW continuous-duty motor running at approximately 1,500 RPM. This allows extended transfer operation without the frequent cooling periods required by many conventional 12V and 24V pumps.
Gespasa Continuous-Duty 80L/min Diesel Transfer Pump
- Available in 12V and 24V DC versions
- Approx. 70-80 L/min free-flow performance with diesel
- Continuous-duty electric motor
- Ideal for bulk fuel transfer and machinery refuelling
- 0.37kW motor
- Low-speed 1,500 RPM operation
- Sliding vane pump design
- Self-priming with up to 2.7m suction lift
- Internal bypass valve
- IP55 motor protection rating
- 3m power cable and battery clamps included
- European construction
- 12 month warranty
Continuous-Duty 12V & 24V Fuel Transfer
One of the key advantages of this pump range is its continuous-duty motor rating.
Many compact 12V and 24V fuel pumps are designed for intermittent operation and require cooling periods after extended use. This can become frustrating when transferring large volumes of diesel or refuelling machinery with large tanks.
The Gespasa AG-90 range is designed for applications where longer operating periods are required, making it particularly well suited to bulk transfer and commercial refuelling.
High Flow up to 80 L/min
Depending on the installation and operating conditions, free-flow diesel transfer rates of approximately 70-80 L/min can be achieved.
Actual delivered flow will depend on factors including:
- Suction lift
- Discharge hose length
- Hose diameter
- Filters and meters
- Nozzle restriction
- Supply voltage
- Fuel temperature
For maximum performance, use adequately sized hose and minimise unnecessary restrictions in both the suction and discharge lines.
Ideal for Remote Bulk Fuel Transfer
These pumps are particularly useful in locations where 240V mains power is unavailable but a vehicle, machinery or battery-based DC power supply is available.
Typical applications include:
- Farm fuel tanks
- Mining and construction sites
- Earthmoving machinery
- Excavators and loaders
- Generators
- Tractors and harvesters
- Service vehicles
- Remote fuel storage tanks
- Diesel transfer between tanks
Sliding Vane Pump Design
The pump uses a sliding vane design which provides good self-priming capability while maintaining useful discharge pressure.
The pump can achieve approximately 2.7m suction lift and a maximum discharge head of approximately 20m under suitable operating conditions.
Integrated Internal Bypass Valve
An internal recirculation bypass valve is incorporated into the pump.
If an automatic fuel nozzle is closed while the pump is still operating, the bypass allows diesel to circulate internally rather than forcing the pump against a completely closed discharge.
This is particularly useful during normal refuelling when the operator may need a short period to move between the pump switch and the filling point.
The bypass is intended for short-term operation only. Do not leave the pump running against a closed nozzle for extended periods. Continued recirculation transfers energy into the diesel, increasing fuel and pump temperature and potentially reducing seal and component life.
Low-Speed Continuous-Duty Motor
The Gespasa pump uses a 0.37kW self-ventilated motor operating at approximately 1,500 RPM.
Running at this relatively low speed helps provide smooth operation while supporting the continuous-duty rating required for larger transfer jobs.
The motor carries an IP55 protection rating, providing protection against dust ingress and water jets when installed and operated correctly.
12V or 24V Options
The pump is available for both 12V and 24V DC electrical systems.
12V versions: Current consumption is approximately 35-53A depending on operating conditions.
24V versions: Current consumption is approximately 24-32A depending on operating conditions.
Due to the significant current demand, adequately sized cabling, secure battery connections and suitable circuit protection are important for reliable pump performance.
Optional Keyed Isolation Switch
An optional keyed power isolation switch can be incorporated into the installation.
This allows the pump power supply to be isolated when not in use and can help prevent unauthorised operation in shared workshops, farms, depots and other accessible areas.
Gespasa Diesel Pump Specifications
| Specification | Value |
|---|---|
| Transfer Capacity | Approx. 70-80 L/min free flow |
| Voltage Options | 12V DC or 24V DC |
| Power | 0.37kW |
| Current Consumption |
12V: approx. 35-53A 24V: approx. 24-32A |
| Motor Speed | Approx. 1,500 RPM |
| Motor Duty | Continuous duty |
| Motor Protection | IP55 |
| Motor Cooling | Self-ventilated |
| Pump Type | Sliding vane |
| Inlet / Outlet | 1" BSP female thread or flange options |
| Maximum Suction Lift | Approx. 2.7m |
| Maximum Discharge Head | Approx. 20m |
| Bypass | Internal recirculation bypass valve |
| Compatible Fluid | Diesel |
| Construction | Cast steel pump with aluminium motor |
| Included |
3m electrical cable Battery clamps |
| Additional Features |
Rust protection treatment Quality European construction |
| Make / Model | Gespasa AG-90 0040 / 0050 / 0042 / 0052 |
| Approx. Weight | 16kg |
| Dimensions | 350mm (L) x 165mm (W) x 175mm (H) |
| Warranty | 12 Months |
Installation Tips for Maximum Flow
High-flow fuel pumps are sensitive to restrictions, particularly on the suction side. For best performance:
- Keep the suction hose as short as practical
- Use adequately sized suction and discharge hose
- Avoid unnecessary elbows and restrictive fittings
- Ensure suction connections are completely airtight
- Use filters and flow meters sized for at least the pump's maximum flow
- Use correctly sized electrical cable to minimise voltage drop
- Mount the pump as close to the fuel source as practical
Electrical Installation
These pumps draw considerably more current than small portable fuel pumps, particularly the 12V version.
Long or undersized power leads can cause voltage drop, reducing pump performance and increasing motor heating.
Ensure the installation uses correctly rated cables, connections, switches and circuit protection appropriate for the pump model and cable length.
Important Operating Notes
Diesel only: The listed fluid compatibility for this pump is diesel. Do not use the pump for petrol, aviation fuel or other fuels unless specifically approved for that application.
Bypass operation: The internal bypass valve allows temporary operation with the discharge closed, but extended bypass operation should be avoided.
Fuel cleanliness: Where contamination may be present, install a suitable suction strainer or fuel filter that is adequately sized for the required flow.
Electrical supply: Ensure the battery or DC power source can safely supply the pump's maximum current demand.
Flow performance: The stated 70-80 L/min figure is a free-flow rating. Actual flow through hose, filters, meters and nozzles will be lower depending on system resistance.