When it comes to safely transferring petrol, diesel, or other fuels, choosing the right pump can make all the difference. The fuel diaphragm pump is one of the most reliable and versatile options available, offering leak-free, self-priming performance with minimal maintenance. For industries that require dependable fuel transfer—even in remote or hazardous environments—this air-powered solution is a game-changer.

What Is a Fuel Diaphragm Pump?

A fuel diaphragm pump, often referred to as an air-operated double diaphragm (AODD) pump, uses two flexible diaphragms that move back and forth, creating suction and discharge pressure. These pumps are powered by compressed air and have no internal electric components, making them perfect for transferring flammable or combustible liquids.

Fuel diaphragm pumps are engineered to safely move petrol, diesel, kerosene, aviation fuel, and other hydrocarbons. Their robust construction, chemical resistance, and sealless design make them ideal for critical fuel handling operations across industrial and commercial sectors.

Key Features of Fuel Diaphragm Pumps

Fuel is not just another fluid—it requires strict safety standards and performance capabilities. Here’s why diaphragm pumps are a top choice:

• Explosion-Proof by Design: No electricity is used—air operation means no sparks, perfect for ATEX-rated zones.

• Self-Priming: No need to manually fill the pump before use—it primes itself even when dry.

• Run-Dry Capable: Can operate dry for short periods without damage, unlike many centrifugal pumps.

• Leak-Free Operation: The diaphragm mechanism avoids shaft seals, reducing the risk of leaks and contamination.

• Portable & Compact: Lightweight models can be easily mounted on service trucks, trailers, or skid units.

• Chemical Resistance: Compatible with fuels, lubricants, and certain additives with the right diaphragm material (e.g., Viton, PTFE, Buna-N).

Where Are Fuel Diaphragm Pumps Used?

Fuel diaphragm pumps are trusted in a wide range of industries:

• Mining & Resources: Fuel transfer from bulk tanks to machinery or mobile equipment.

• Agriculture: Diesel transfer for tractors and farm equipment, especially in remote locations.

• Construction: Fuel delivery to onsite generators, pumps, and heavy vehicles.

• Transport & Logistics: Refuelling fleets, especially from intermediate bulk containers (IBCs).

• Aviation: Pumping aviation fuel from drums or containers.

• Emergency Services: Mobile refuelling during disaster response or remote operations.

Technical Considerations for Fuel Pumps

Choosing the right fuel diaphragm pump involves a few key specifications:

• Material Compatibility: Ensure wetted parts (body, diaphragm, valves) resist fuel corrosion—aluminium, stainless steel, or conductive polypropylene are common.

• Diaphragm Material: Viton or Buna-N are preferred for hydrocarbon compatibility.

• Flow Rate: Typical models range from 20 to 500+ litres per minute, depending on application size.

• Port Size: 1” to 3” pumps are most common for fuel—larger ports offer higher volume, while smaller units suit portable setups.

• Pressure Rating: Most operate efficiently between 60–100 PSI compressed air.

• Grounding & Venting: Pumps should be grounded and vented to prevent static discharge and fumes.

Maintenance Tips for Safe Operation

Handling fuel comes with zero margin for error. Keep your diaphragm pump in peak condition with these tips:

• Check for diaphragm wear regularly, especially when pumping petrol or solvents.

• Flush the pump with a compatible cleaner if fuel is left standing in the system.

• Inspect air lines and valves to ensure smooth, reliable operation.

• Always ground the pump to prevent electrostatic discharge.

• Use correct replacement parts—genuine diaphragms and valves maintain safety and performance.

Why Choose MultiTorque?

At MultiTorque, we understand the importance of safe, compliant, and efficient fuel transfer. That’s why we supply and service premium-grade fuel diaphragm pumps across Australia. Whether you need a compact 1” diesel pump for a ute or a high-volume 3” aviation fuel system on a trailer, we’ve got you covered.

We support industry-trusted brands like Wilden, Napco, and NOV, and we can custom-build trailer-mounted or skid-based fuel pump units for site refuelling, emergency setups, or mobile operations. Backed by over 15 years of experience, we deliver solutions that perform in the harshest environments.

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Call MultiTorque on 1300 726 525 or email sales@multitorque.com to get the right fuel diaphragm pump for your job.

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