When it comes to moving thick, viscous, or lubricating fluids with precision and quiet efficiency, few pumps compare to the internal gear pump. Compact, durable, and self-priming, this pump style is a workhorse across industries like oil & gas, food processing, chemical manufacturing, and lubrication systems.

At MultiTorque, we supply, repair, and support internal gear pumps across Australia, helping industrial operators keep their systems flowing with zero fuss.

What Is an Internal Gear Pump?

An internal gear pump is a type of positive displacement pump that uses two intermeshing gears—one inside the other—to move fluid. The outer gear (called the rotor) drives the inner gear (called the idler), creating a sealed cavity that transports fluid from the inlet to the outlet.

A crescent-shaped spacer between the gears maintains separation and optimises flow, allowing for smooth, continuous transfer with very little pulsation.

How It Works

1. Fluid enters the pump casing through the inlet.

2. As the gears rotate, they create expanding cavities that draw fluid in.

3. The fluid is carried between the gear teeth and the casing.

4. As the gears re-mesh on the outlet side, the cavity size decreases, pushing the fluid out under pressure.

The result? Smooth, reliable flow even with high-viscosity or shear-sensitive fluids.

Key Features and Benefits

• Self-Priming: Can lift fluids from below pump level, ideal for tank-to-tank transfer.

• Handles Viscous Fluids: Excellent for gear oil, molasses, adhesives, asphalt, and more.

• Reversible Flow: Can operate in either direction without modification.

• Compact and Quiet: Low noise and vibration compared to external gear or vane pumps.

• Precise Flow Control: Great for dosing or metering applications with thick liquids.

Common Applications of Internal Gear Pumps

Internal gear pumps are used across a wide range of industries, including:

• Lubrication Systems: Gear oil, transmission fluid, or hydraulic oil recirculation.

• Chemical Processing: Resins, polymers, solvents, and acids (with appropriate materials).

• Food & Beverage: Chocolate, syrup, vegetable oil, and other high-viscosity food-grade fluids.

• Asphalt & Bitumen Transfer: Ideal for hot, thick fluids requiring high-pressure delivery.

• Paints & Coatings: Enamel, varnish, and ink that require low shear handling.

Technical Specs and Configuration Options

When specifying an internal gear pump, consider the following:

• Flow Rate: Ranges from under 1 L/min to over 1,000 L/min depending on size and speed.

• Pressure: Typically up to 15 bar (217 psi), with some models handling more.

• Viscosity Range: Can handle fluids from 1 cP (water-like) to over 1,000,000 cP (paste-like).

• Materials of Construction:

  • Body: Cast iron, stainless steel, or bronze

  • Gears: Steel or composite depending on chemical compatibility

  • Seals: Mechanical, lip, or packing seals

• Mounting: Horizontal baseplate or mobile skid configurations available

Maintenance and Reliability

Internal gear pumps are known for low maintenance needs, but periodic inspection is key:

• Check for wear on gear teeth and the crescent spacer.

• Monitor shaft seals for leaks or degradation, especially in high-temp applications.

• Flush the pump if switching fluids or working with sticky substances.

• Lubricate bearings per manufacturer guidelines.

With proper care, these pumps can run for thousands of hours with minimal downtime.

Why Choose MultiTorque?

MultiTorque has spent over 15 years helping Australian industries move thick and tricky fluids with precision. Our internal gear pump solutions are backed by hands-on service, high-quality spare parts, and expert advice.

Whether you need a stationary oil transfer unit, a mobile bitumen pump setup, or a food-safe chocolate pump with heat tracing—we’ll make it happen.

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Call MultiTorque today on 1300 726 525 or email us at sales@multitorque.com to speak with pump specialists who know what they’re doing.

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If you’re moving thick fluids, abrasive slurries, or delicate ingredients, a rotary lobe pump could be the missing piece in your process. Known for their gentle action, low shear, and sanitary design, rotary lobe pumps are a staple in industries where fluid integrity, hygiene, and performance matter most.

At MultiTorque, we supply and service rotary lobe pumps that keep Australian industries running—whether it’s dairy on a production line, molasses on a farm, or chemical concentrate in a plant.

What Is a Rotary Lobe Pump?

A rotary lobe pump is a type of positive displacement pump that uses two intermeshing lobed rotors to move fluid. As the lobes rotate, they trap fluid in cavities and carry it around the pump casing from the suction side to the discharge side.

Unlike gear pumps, the lobes in a rotary lobe pump never touch—reducing wear and allowing for gentle fluid transfer. This makes them ideal for applications where cleanliness, viscosity, and particle handling are important.

Key Benefits of Rotary Lobe Pumps

• Hygienic Design: Many models are CIP (Clean-In-Place) and SIP (Steam-In-Place) compatible, making them a top choice for food, beverage, and pharmaceutical processes.

• Low Shear Handling: Perfect for fragile fluids like cream, gel, or yogurt—preserving texture and quality.

• Solid Handling: Can pass soft solids such as fruit chunks, curds, or meat bits without damaging them.

• Reversible Flow: Useful for tank filling and emptying using the same pump.

• Self-Priming: Can lift fluids from below the pump’s inlet level with ease.

• Wide Viscosity Range: Performs well with everything from water-like fluids to ultra-thick sludges or pastes.

Common Applications for Rotary Lobe Pumps

These pumps are trusted across industries that demand both precision and durability:

• Food & Beverage: Jams, sauces, chocolate, syrups, dairy, beer, wine.

• Pharmaceuticals: Ointments, lotions, active ingredients, and culture suspensions.

• Cosmetics & Personal Care: Creams, gels, shampoos, body washes.

• Agriculture: Molasses, nutrient mixes, slurry applications.

• Chemical Processing: Corrosive or abrasive fluids, slurries, and concentrates.

• Wastewater Treatment: Sludge, biosolids, and thickened waste streams.

Technical Specifications

When choosing a rotary lobe pump, here are a few essential considerations:

• Flow Rates: From 10 L/min to over 1,000 L/min depending on size and rotor type.

• Pressure: Can operate up to 20 bar (290 PSI) in most applications.

• Viscosity Capability: Up to 1,000,000 cP with specialized rotors.

• Materials: Pumps are typically constructed from 316 stainless steel, with elastomers tailored to your fluid’s chemical properties (EPDM, Viton, PTFE, etc.).

• Rotor Styles: Bi-wing, tri-lobe, or multi-lobe—each suited to different applications and viscosities.

• Sealing Options: Mechanical seals, lip seals, or double mechanical seals depending on the application and compliance requirements.

Maintenance & Longevity

Rotary lobe pumps are built for long life, but good maintenance is key:

• Inspect lobes and seals regularly for wear or damage.

• Flush pump after each use in sensitive or hygienic operations.

• Lubricate bearings and gearbox according to manufacturer specs.

• Use genuine parts for rebuilds to maintain clearances and certifications.

Why Choose MultiTorque?

At MultiTorque, we don’t just sell pumps—we provide pumping solutions tailored to your industry, budget, and technical needs. We stock and service premium-grade rotary lobe pumps, including options for mobile setups, trailer mounting, or integration into automated systems.

With 15+ years of experience, national reach, and a no-nonsense attitude toward reliability, we help keep your production line or process plant flowing smoothly, day in and day out.

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Need a rotary lobe pump that delivers consistent results with zero compromise? Call MultiTorque today on 1300 726 525 or email sales@multitorque.com.

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When your operation requires gentle, hygienic, and efficient fluid transfer, lobe pumps are the solution of choice. Designed to handle viscous or shear-sensitive fluids without compromising flow rate or cleanliness, these pumps are a staple in the food, beverage, pharmaceutical, and cosmetic industries. But their uses go far beyond the dairy aisle—lobe pumps are built tough enough for chemicals, oils, and slurries too.

At MultiTorque, we supply, service, and support high-performance lobe pumps across Australia, helping businesses transfer thick, high-value fluids with precision and reliability.

What Is a Lobe Pump?

A lobe pump is a type of positive displacement pump that uses two or more lobed rotors rotating in opposite directions within a casing. As the lobes rotate, fluid is trapped in the cavities between the lobes and the casing, then moved around the outside of the rotors and discharged under pressure.

Because the lobes do not make contact with each other, the fluid is transferred with minimal shear and no internal metal-to-metal contact—making lobe pumps perfect for delicate or viscous materials.

Key Features and Advantages

Lobe pumps offer a range of benefits for industries requiring precision and product integrity:

• Gentle Pumping Action: Minimises damage to shear-sensitive fluids like creams, gels, or dairy products.

• Sanitary Design: Ideal for food, beverage, and pharmaceutical processes; many models are CIP (Clean-in-Place) and SIP (Steam-in-Place) compatible.

• Handles Solids & Particulates: Can pass soft solids such as fruit chunks or meat pieces without crushing.

• High Viscosity Tolerance: Perfect for thick fluids like honey, molasses, or industrial sludge.

• Reversible Operation: Can run in both directions—great for tank loading/unloading.

• Low Pulsation Flow: Offers smooth, consistent flow for metering and dosing applications.

Common Applications of Lobe Pumps

Thanks to their hygienic and versatile design, lobe pumps are used across numerous industries:

• Food & Beverage: Yogurt, sauces, jams, beer, milk, chocolate, and edible oils.

• Pharmaceuticals & Cosmetics: Lotions, gels, syrups, creams, and ointments.

• Chemical Processing: Corrosive chemicals, solvents, or resins.

• Agriculture: Molasses, animal feed supplements, and nutrient solutions.

• Waste Management: Viscous sludges and chemical waste streams.

Technical Specifications

When selecting a lobe pump, here are a few key factors to consider:

• Flow Rate: Depending on size and model, can range from 10 to 1,000+ litres per minute.

• Pressure Capacity: Generally up to 20 bar (290 psi), depending on pump size and fluid.

• Viscosity Range: Handles fluids up to 1,000,000 cP with the right configuration.

• Materials: Wetted parts are typically stainless steel for hygiene and corrosion resistance. Elastomers (seals and gaskets) vary based on chemical compatibility.

• Seal Options: Mechanical seals, lip seals, and double-seal designs available.

• Drive Configurations: Electric motors, gearboxes, or variable-speed drives.

Maintenance and Operational Tips

• Keep seals lubricated and inspect regularly for wear or leaks.

• Ensure correct alignment of pump shafts and lobes for optimal performance.

• Flush the pump between different fluids to prevent cross-contamination.

• Use CIP-compatible models if sanitation is a key requirement.

• Monitor motor speed—running too fast can reduce lifespan or cause cavitation.

Why Choose MultiTorque for Lobe Pumps?

MultiTorque has over 15 years of experience supplying and servicing lobe pumps across Australia. Whether you’re in food processing, chemical manufacturing, or wastewater treatment, we’ll match you with the right pump and keep it running with expert support and spare parts on hand.

We stock trusted brands and offer custom mobile pump units, on-site servicing, and expert consultation to ensure your operation stays smooth, clean, and compliant.

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Need a hygienic and powerful lobe pump for your process? Contact MultiTorque today on 1300 726 525 or email us at sales@multitorque.com.

🔗 Visit us at: https://www.multitorque.com.au
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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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When it comes to moving large volumes of fluid—including sludge, slurry, oil, chemicals, or wastewater—you need a pump that can keep up with demand without sacrificing reliability. That’s where the 4 inch double diaphragm pump comes in. With high flow capacity and rugged construction, this powerhouse is ideal for the most demanding industrial applications.

What Is a 4 Inch Double Diaphragm Pump?

A double diaphragm pump, also known as an air-operated double diaphragm (AODD) pump, uses compressed air to alternately flex two diaphragms, creating a vacuum to draw fluid in and push it out. The “4 inch” designation refers to the pump’s port size, which allows significantly higher flow rates compared to smaller models.

With 4-inch inlet and outlet ports, this pump is designed for high-volume transfer, often exceeding 1,000 litres per minute depending on the fluid type and setup. It’s an ideal solution when you need to move thick, abrasive, or solid-laden fluids efficiently and safely.

Key Benefits of a 4 Inch AODD Pump

Here’s why industries across Australia trust the 4 inch diaphragm pump:

• Massive Flow Capacity: Designed to move high volumes of fluid fast—perfect for dewatering, tank transfer, and spill recovery.

• Handles Solids with Ease: The large internal clearances and gentle pumping action mean it can handle solids up to several millimetres without clogging.

• Non-Electric Operation: Runs on compressed air, making it explosion-proof and safe in hazardous zones (ATEX-rated versions available).

• Self-Priming & Dry Running: Starts without fluid in the line and can run dry without damage—ideal for fluctuating levels.

• Chemical Resistant Options: Available in aluminium, stainless steel, polypropylene, and other materials to suit your media.

• Portable or Stationary: Can be mounted on skids, trailers, or fixed to plant floors depending on your operation.

Common Uses for 4 Inch Double Diaphragm Pumps

Thanks to their versatility and sheer flow power, these pumps are commonly used in:

• Mining and Quarrying: For dewatering pits, handling tailings, or transferring slurry.

• Oil & Gas: Moving drilling muds, waste oil, or fuel-contaminated water.

• Construction Sites: Pumping dirty water, sludge, and runoff.

• Wastewater Plants: Handling activated sludge, thickened waste, or scum.

• Chemical Industry: Transferring corrosive liquids safely without leaks.

Technical Specs to Look For

When choosing a 4 inch double diaphragm pump, consider the following:

• Flow Rate: Can exceed 1,000–1,200 LPM under optimal conditions.

• Air Consumption: Needs a steady compressed air source—typically between 60–100 PSI.

• Solids Handling: Many models handle up to 12 mm solids, depending on diaphragm and valve type.

• Materials of Construction: Options like aluminium, stainless steel, and PVDF suit different fluids and industries.

• Diaphragm Materials: Choose from PTFE, Santoprene, Buna-N, or EPDM depending on your chemical resistance needs.

• Weight & Mounting: Larger pumps are heavier—portable frames or skid mounts are available for ease of transport and stability.

Maintenance and Operational Tips

• Check air filters and regulators regularly for consistent performance.

• Inspect diaphragms for signs of wear, especially when pumping abrasive fluids.

• Flush the pump after each use to prevent internal build-up or corrosion.

• Keep spare parts like diaphragms, balls, and seats on hand for quick servicing.

Why Choose MultiTorque?

At MultiTorque, we supply, service, and support high-quality 4 inch double diaphragm pumps Australia-wide. With 15+ years of experience in industrial pumps, we know what it takes to keep your systems running—especially in tough environments like mining, construction, and wastewater.

We stock and support trusted global brands such as Wilden, NOV, and Napco, and we also build custom mobile pump solutions, including trailer-mounted AODD pump units for rapid deployment.

Whether you need a pump tomorrow or want expert advice on the right model for your application, MultiTorque has your back.

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Contact us today on 1300 726 525 or email sales@multitorque.com to get the right 4 inch diaphragm pump for your operation.

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Sludge is one of the most challenging materials to pump—thick, abrasive, and often full of solids that chew through standard pumps in no time. That’s where the positive displacement sludge pump shines. Engineered for reliability and power, these pumps handle viscous, high-solid-content fluids with ease, making them a staple in wastewater, mining, and industrial processing.

What Is a Positive Displacement Sludge Pump?

A positive displacement pump moves fluid by trapping a fixed amount and forcing (displacing) it into the discharge pipe. Unlike centrifugal pumps, which rely on velocity, positive displacement pumps deliver consistent flow regardless of pressure changes or viscosity. This makes them ideal for sludge—where flow rate, suction lift, and solids handling are all critical.

There are several types of positive displacement pumps used for sludge:

• Progressive cavity pumps

• Piston pumps

• Peristaltic (hose) pumps

• Diaphragm pumps

Each type has unique advantages depending on the sludge characteristics, required flow rate, and pressure.

Why Use Positive Displacement Pumps for Sludge?

Pumping sludge isn’t just about moving material—it’s about doing it reliably and cost-effectively, without endless maintenance or breakdowns. Here’s why positive displacement pumps are the go-to solution:

• Consistent Flow: Delivers a steady stream, even with thick or variable materials.

• Solids Handling: Easily manages fibrous, abrasive, or chunky sludge without clogging.

• High Suction Lift: Can draw sludge from deep pits or tanks without priming.

• Handles High Viscosity: Ideal for dense, sticky, or semi-solid materials.

• Pressure Capable: Maintains flow even against high discharge pressures.

• Durable Design: Built to resist wear and corrosion in aggressive environments.

Key Applications for Sludge Pumps

Positive displacement sludge pumps are used across multiple industries that deal with high-solid-content fluids. Common applications include:

• Wastewater Treatment: Transferring activated sludge, thickened sludge, and biosolids.

• Mining & Quarrying: Pumping slurry, tailings, and dewatering waste.

• Oil & Gas: Handling drilling muds and oil-based sludges.

• Industrial Processing: Moving paint waste, food byproducts, or pulp sludge.

• Agriculture: Managing manure slurry, effluent, and composted waste.

Choosing the Right Positive Displacement Sludge Pump

Not all sludge is created equal. Selecting the right pump depends on several key factors:

• Solids Content: For high solids or abrasive media, progressive cavity and peristaltic pumps are ideal.

• Flow Rate & Pressure: Determine your required LPM (litres per minute) and discharge head.

• Material Compatibility: Use corrosion-resistant materials for chemical or caustic sludge.

• Pulsation Needs: Diaphragm pumps produce pulsing flow, while progressive cavity pumps offer smoother delivery.

• Maintenance Access: Some designs offer faster access to replace wear parts without full disassembly.

At MultiTorque, we help you spec the right pump based on your sludge type, duty cycle, and site requirements—ensuring you get long-term value and reliability.

Maintenance Tips for Longevity

Keeping your sludge pump in peak condition doesn’t have to be a headache. Follow these best practices:

• Inspect Seals and Hoses Regularly: Look for cracks or leaks in high-wear components.

• Flush After Use: Prevent buildup and blockages by flushing the pump with water or a compatible solvent.

• Monitor Flow and Pressure: Any sudden drops can indicate internal wear or a blockage.

• Use OEM Parts: Maintain efficiency and warranty coverage with proper replacements.

• Lubricate Appropriately: Especially for progressive cavity pumps, proper lubrication of seals and stators is key.

Why Choose MultiTorque?

MultiTorque has been supplying, servicing, and repairing positive displacement sludge pumps across Australia for over 15 years. We’re specialists in heavy-duty pumping, offering solutions tailored to tough sludge environments. Whether you’re running a wastewater treatment plant or need a mobile trailer-mounted sludge pump, we’ve got the expertise and gear to make it happen.

We proudly supply and support trusted brands like Orbit, Wilden, NOV, and Napco, and we back all equipment with hands-on service and fast turnaround times. Need a custom solution? We can build trailers, install systems, and modify existing equipment to suit your site.

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Call us today on 1300 726 525 or email sales@multitorque.com to find the right sludge pump for your operation.

If you’re dealing with waste oil in an industrial or commercial environment, you need a pump that’s not only tough but specifically designed to handle thick, contaminated, and abrasive fluids. That’s where a double diaphragm pump for waste oil comes in. At MultiTorque, we supply, repair, and service high-performance air operated diaphragm pumps built to handle the unique challenges of waste oil transfer in mining, mechanical, transport, and workshop settings.

What Is a Double Diaphragm Pump?

A double diaphragm pump is a type of positive displacement pump that uses compressed air to move fluid. It consists of two diaphragms that move back and forth in unison, creating suction and discharge cycles. This design is self-priming, dry-running, and capable of handling solids and viscous fluids, making it ideal for messy, heavy-duty jobs like waste oil handling.

Whether you’re draining sumps, transferring used lubricants, or processing waste oil for recycling, a diaphragm pump gets the job done without clogging or burning out.

Why Use a Double Diaphragm Pump for Waste Oil?

Waste oil can be a nightmare for traditional pump systems. It often contains solids, sludge, metal shavings, water, and chemical residues. Here’s why a double diaphragm pump is your best bet:

• Handles Viscous Fluids: Can pump thick, dirty waste oil with ease.

• Dry-Run Capable: No damage if it runs without fluid.

• Self-Priming: Starts up even when suction lift is needed.

• Solids Handling: Easily transfers fluids with suspended solids or debris.

• Chemical Compatibility: Resistant to hydrocarbons and chemical contaminants.

• Explosion-Proof Options: Safe for flammable oil vapors and hazardous zones.

MultiTorque supplies models in aluminium, stainless steel, and polypropylene to match your application’s specific compatibility needs.

Applications We Support

Our double diaphragm pumps for waste oil are trusted in industries across Australia, including:

• Mechanical and Automotive Workshops

• Mining Sites

• Transport Depots and Fleets

• Oil & Gas Fields

• Heavy Equipment Maintenance Yards

• Waste Oil Recycling Facilities

• Fabrication and Machining Workshops

If you need to move oil that’s contaminated, viscous, or downright nasty, we’ll match you with a diaphragm pump that can handle the mess—day in, day out.

Leading Brands We Service & Supply

MultiTorque works with the biggest and best diaphragm pump brands in the world. We supply, repair, and service:

• Wilden

• Graco

• ARO (Ingersoll Rand)

• Yamada

• Versa-Matic

• Sandpiper

We stock genuine spare parts, replacement diaphragms, valve kits, and air motors. Whether you’re buying new or maintaining existing units, MultiTorque is your one-stop shop for waste oil pump solutions.

Repairs, Service & Support

We’re not just here to sell pumps—we’re here to keep your system moving. Our services include:

• In-house diagnostics and rebuilds

• On-site pump repairs

• Full pump replacements or upgrades

• Spare parts and rebuild kits

• Preventative maintenance scheduling

All repairs and servicing are handled by trained technicians who understand the unique challenges of oil-contaminated environments.

Why Choose MultiTorque?

With over 15 years of hands-on experience across Australia’s toughest industries, MultiTorque delivers pump solutions that perform under pressure. We focus on long-term reliability, not short-term fixes.

• Tailored pump matching based on your waste oil type

• Fast shipping across Australia

• Responsive support and advice

• Competitive pricing on top global brands

• Transparent quoting and repair timelines

We back every pump we supply or service with real-world performance, expert knowledge, and responsive customer care.

Ready to Pump Waste Oil Without the Headaches?

Don’t risk downtime or pump failure when handling dirty oil. Get a double diaphragm pump for waste oil from MultiTorque and move the thick stuff with confidence.

📞 Call 1300 726 525 or email sales@multitorque.com today to speak with a pump specialist.

When it comes to durability, efficiency, and reliability in fluid handling, few names stand out like Wilden. As a global leader in air operated double diaphragm (AODD) pump technology, Wilden pumps are a top choice for demanding industries across mining, chemical processing, food, wastewater, and oil & gas. At MultiTorque, we proudly supply, service, and repair the full range of Wilden air operated diaphragm pumps across Australia, delivering tailored solutions for harsh environments and thick, abrasive fluids.

 

 

 

What Is a Wilden Air Operated Diaphragm Pump?

A Wilden air operated diaphragm pump is a positive displacement pump powered by compressed air. It features two flexible diaphragms that move in tandem to draw fluid into and out of the pump chamber via check valves. With no rotating parts in the fluid path, these pumps are ideal for transferring shear-sensitive, viscous, or corrosive materials.

The Wilden brand is renowned for its innovative Pro-Flo® SHIFT air distribution system, which dramatically reduces air consumption while improving flow rates. If you’re looking for a rugged pump with low maintenance and maximum uptime, Wilden is the name to trust—and MultiTorque is your go-to provider.

Key Advantages of Wilden Diaphragm Pumps

Here’s why so many industries choose Wilden air operated diaphragm pumps:

• No Electrical Power Needed: Ideal for hazardous or remote areas.

• Dry-Run Capable: Runs dry without damage—unlike centrifugal pumps.

• Handles High Viscosity Fluids: Perfect for sludge, oil, slurry, and paste.

• Self-Priming & Portable: Easy to move and install anywhere on-site.

• Corrosion & Abrasion Resistant: Built tough for chemicals and rough materials.

• Low Air Consumption: Thanks to patented Pro-Flo® SHIFT tech.

At MultiTorque, we stock a wide variety of Wilden models in metal and plastic bodies with different diaphragm materials for compatibility with your application.

Applications We Support

Wilden AODD pumps are used across an extensive range of sectors in Australia:

• Mining and Dewatering

• Chemical Transfer

• Food and Beverage

• Construction and Site Management

• Wastewater and Effluent Treatment

• Paints, Inks, and Coatings

• Oil & Gas Refining and Transport

Whether you’re moving clean water or corrosive sludge, MultiTorque can match you with the right Wilden pump for the job.

Expert Servicing, Repairs, and Parts

We don’t just sell pumps—we keep them running. MultiTorque provides:

• Pump Rebuilds and Overhauls

• On-site Repairs and Emergency Service

• Diaphragm and Valve Replacements

• Air Motor Servicing

• Seal and Check Valve Kits

With full access to genuine Wilden spare parts, we guarantee optimal performance and long-term reliability. Need help identifying a part? Our experts are just a phone call away.

Why Choose MultiTorque?

With 15+ years of experience in pumps and power systems, MultiTorque is one of Australia’s leading names in pump service, repair, and supply. We understand the needs of industries operating in extreme environments—and we deliver rugged solutions that last.

• Nationwide delivery and support

• Tailored advice from pump specialists

• Quick turnaround on servicing and repairs

• Affordable pricing on premium brands

• Reliable and responsive customer service

When you partner with MultiTorque, you’re not just buying a pump—you’re gaining a team that’s dedicated to your uptime and efficiency.

Get Pumping with Wilden and MultiTorque

Ready to upgrade or service your Wilden air operated diaphragm pump? MultiTorque has the gear, the parts, and the team to keep your operations flowing.

📞 Call us on 1300 726 525 or email sales@multitorque.com to speak to a Wilden pump specialist today.

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If you’re working with thick, sticky, or abrasive fluids, standard pumps just won’t cut it. That’s where a high viscosity diaphragm pump becomes essential. Built to move fluids other pumps struggle with, these robust systems are trusted in mining, industrial, and chemical processing environments across Australia. At MultiTorque, we specialize in supplying, servicing, and repairing high viscosity diaphragm pumps that are engineered to handle the tough stuff—efficiently and reliably.

What Is a High Viscosity Diaphragm Pump?

A high viscosity diaphragm pump is a type of positive displacement pump designed to handle thick, slow-flowing, or solid-laden liquids without clogging or losing pressure. These pumps use a flexible diaphragm and check valves to move fluid in and out of a sealed chamber. Since there are no rotating seals or metal-on-metal contact inside the chamber, diaphragm pumps are highly resistant to wear, corrosion, and jamming.

They’re powered either pneumatically (air-operated) or electrically and are especially well-suited to environments where viscosity and abrasion would cause rapid failure in other types of pumps.

Fluids Ideal for High Viscosity Diaphragm Pumps

MultiTorque provides high viscosity diaphragm pump solutions for fluids such as:

• Greases and sludges

• Oils and fuels

• Paints and coatings

• Food pastes and syrups

• Bitumen and adhesives

• Slurries and chemical resins

• Drilling mud and wastewater sludge

The key advantage? These pumps don’t rely on centrifugal force to move fluid. They operate on suction and compression—allowing for consistent flow even when dealing with molasses-thick media.

Key Features and Benefits

Here’s why industries across Australia are switching to high viscosity diaphragm pumps:

• Self-Priming: No need to manually fill the pump before startup.

• Dry-Running Capable: Unlike other pumps, they can run dry without damage.

• Handles Solids and Abrasives: Ideal for slurry-like materials and fluids with suspended particles.

• Easy Maintenance: Few moving parts, easy to clean and repair.

• Chemical Resistance: Suitable for caustic, acidic, and chemically aggressive fluids.

• Explosion-Proof Options: For hazardous work environments.

MultiTorque supplies both metal and non-metallic diaphragm pumps, depending on the chemical and physical demands of your process.

Applications We Support

Our high viscosity diaphragm pump units are trusted in a variety of sectors, including:

• Mining and mineral processing

• Wastewater treatment plants

• Paint and chemical manufacturing

• Agricultural and food processing

• Oil and gas operations

• Construction and tunneling

If your fluid moves like honey in winter, we’ve got a pump that can handle it.

Brands We Work With

MultiTorque services and supplies parts for trusted brands including:

• Wilden

• Graco

• Yamada

• ARO

• Versa-Matic

• Gorman-Rupp

We offer genuine replacement parts, diaphragm rebuild kits, valves, air motors, and expert servicing—all with rapid turnaround times.

Why Choose MultiTorque?

With over 15 years of experience, MultiTorque has built a reputation for providing reliable pump solutions that stand up to Australia’s harshest conditions. We’re not just a parts shop—we’re your partner in long-term performance.

• Nationwide shipping and service

• In-house repairs and testing

• On-site diagnostics and servicing

• Custom pump setups and consulting

• Competitive pricing on premium brands

Whether you’re dealing with sludge in the Pilbara or resin in Brisbane, our team delivers dependable results.

Get Your Fluid Moving—No Matter How Thick

Ready to upgrade to a high viscosity diaphragm pump that won’t let you down? MultiTorque has the parts, the expertise, and the gear to get you pumping without the stress.

📞 Call 1300 726 525 or email sales@multitorque.com to get expert help with your application today.

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In industrial and workshop environments, transferring oil can be a messy, hazardous, and inefficient process—unless you’re using the right equipment. A diaphragm oil transfer pump is one of the most reliable and low-maintenance solutions for moving lubricants, waste oil, hydraulic fluids, and similar viscous liquids. At MultiTorque, we supply, service, and repair these pumps to keep your operations running clean, safe, and efficient.

What Is a Diaphragm Oil Transfer Pump?

A diaphragm oil transfer pump is a type of positive displacement pump that uses compressed air or mechanical actuation to move fluids. The key mechanism involves two diaphragms oscillating back and forth, creating suction and discharge through check valves.

Because it’s air-powered and has no rotating seals or shafts, it can safely transfer oils of varying viscosity — even those with contaminants or suspended solids — without the risk of leaks, overheating, or mechanical failure.

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Key Features and Benefits

✅ Safe for Flammable Liquids

Diaphragm pumps are air-operated, meaning they don’t rely on electricity and are therefore intrinsically safe for handling flammable or combustible oils. They are perfect for oil transfer in mining, fuel depots, service centres, and hazardous areas.

✅ Handles Viscous Oils with Ease

Whether it’s light synthetic oil or heavy used motor oil, diaphragm pumps are capable of transferring thick, sticky fluids without clogging. They’re commonly used to move gear oil, hydraulic fluid, and waste oil across a range of industries.

✅ Self-Priming and Dry-Run Capable

Diaphragm pumps can self-prime up to several meters vertically and tolerate dry running without damage. This makes them ideal for remote tank applications or intermittent batch transfers.

✅ Minimal Maintenance

With no mechanical seals or motors, diaphragm oil transfer pumps have fewer parts to wear out. Diaphragms and valves can be easily swapped out during servicing, extending the life of the unit significantly.

✅ Leak-Free Operation

The closed system design means there’s less chance of spills or environmental contamination — a huge benefit when working with oils that can stain or pollute.

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Industrial Applications

At MultiTorque, we supply diaphragm oil transfer pumps for:

• Waste oil collection and disposal

• Hydraulic oil recovery and reuse

• Heavy equipment servicing

• Lubrication systems

• Fuel transfer for mobile machinery

• Workshop maintenance bays

Whether you’re transferring fluids from IBCs, underground tanks, or workshop drums, we’ll match you with the right pump for the job.

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Material Options for Every Environment

We offer pumps in a variety of body and diaphragm materials, depending on the oil type and operating conditions:

• Aluminium – Lightweight and cost-effective for standard oil types.

• Stainless Steel – Corrosion-resistant and durable for harsh or food-grade environments.

• PTFE or Viton Diaphragms – For chemical compatibility with additives or synthetic oils.

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Brands We Support

MultiTorque services and supplies a range of trusted brands including:

• Wilden

• Graco

• ARO

• Yamada

• Versa-Matic

We also carry genuine replacement parts, provide repairs, and can build custom pumping systems to fit your operation.

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Why Choose MultiTorque?

We’ve built a reputation across Australia for our reliable service, fast turnaround, and no-nonsense technical support. With branches in Perth and Brisbane, and mobile teams ready to assist on-site, we’re your one-stop solution for all things pumps.

From first quote to long-term maintenance, our experts will ensure your diaphragm oil transfer pump delivers peak performance — and stays that way.

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Ready to Upgrade Your Oil Handling System?

Get expert advice and fast delivery from the team who knows pumps inside and out.

📞 Call MultiTorque now on 1300 726 525
📧 Or email us at sales@multitorque.com

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We’ll help you find the perfect diaphragm oil transfer pump to match your application and budget.