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If you’re looking for a double diaphragm pump for sale, you’re likely after one thing: reliability. Whether you’re transferring slurry, chemicals, oil, or waste, these rugged air-operated pumps are built to perform under pressure—literally.

At MultiTorque, we supply, service, and support double diaphragm pumps across industries in Australia. Our team can help you select the right unit for your fluid type, pressure needs, and operational environment—plus we offer trailers, panels, and full turn-key pump systems.

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What Is a Double Diaphragm Pump?

A double diaphragm pump is a type of positive displacement pump that moves fluids by oscillating two flexible diaphragms back and forth. These diaphragms are powered by compressed air, which alternates between chambers, pulling in fluid on one side and pushing it out the other.

The result? A pump that can handle almost any liquid, from thin solvents to abrasive sludge, all while being self-priming, dry-running capable, and dead simple to maintain.

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Why Choose a Double Diaphragm Pump?

There’s a reason these units are workhorses in so many industries:

✅ Self-Priming & Dry-Running

They can start without being filled with fluid and survive running dry without damage.

✅ Handles Abrasives & Solids

Pumps slurries, sludge, and dirty water with ease—no impellers to get chewed up.

✅ Corrosion-Resistant Options

From polypropylene to stainless steel and Teflon, the wetted parts can be chosen to resist harsh chemicals.

✅ Portable & Air-Powered

No electricity required—just compressed air. Ideal for explosive or hazardous environments.

✅ Low Maintenance

Few moving parts and easy strip-down design mean less downtime and lower costs.

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Common Uses of Double Diaphragm Pumps

These versatile pumps are found across almost every industrial sector:

• Mining & Dewatering – Pumping slurry, tailings, and pit water

• Oil & Gas – Transferring fuel, oil, and waste liquids

• Chemical Handling – Dosing acids, caustics, and solvents

• Food & Beverage – CIP (Clean-in-place) systems, syrups, sauces (with food-grade models)

• Construction & Civil – Dewatering sumps, trenches, and foundations

• Agriculture – Fertiliser and chemical spray systems

If you need a double diaphragm pump for sale that can take a beating and keep on pumping—this is it.

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What to Consider When Buying a Diaphragm Pump

Not all pumps are created equal. Here’s what to look at before purchasing:

• Material Compatibility – Match the diaphragm, housing, and valve materials to your fluid

• Port Size – Common sizes include 1″, 2″, 3″, and even 4″ depending on flow requirements

• Flow Rate – How many litres per minute do you need?

• Max Pressure – Check PSI or bar ratings to match your air supply

• Mounting Options – Skid, trailer, wall-mounted, or portable?

We stock trusted brands like Wilden, Yamada, and more. Need a pump mounted on a custom skid or built into a trailer with hose reels and air tanks? MultiTorque builds it.

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Why Buy from MultiTorque?

With 15+ years in the pump game, we don’t just sell pumps—we build long-term partnerships with Australia’s hardest-working industries. Here’s what you get when you buy from us:

• ✅ Full-service supply, install, and commissioning

• ✅ Custom trailers and skids for diaphragm pump systems

• ✅ Servicing, diaphragm replacements, and rebuilds

• ✅ Control panel and air system integration

• ✅ Nationwide delivery and support

Need to move waste oil? No problem. Caustic sludge? We’ve got the chemical-resistant build. Just air and attitude? We’ve got air kits too.

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Get Your Double Diaphragm Pump Today

Ready to buy? Call the experts. Whether you want a bare unit, full skid, or mobile solution—we’ve got your double diaphragm pump for sale ready to go.

📞 Call MultiTorque on 1300 726 525
🌐 Visit www.multitorque.com.au
🔗 Follow us on LinkedIn
📧 Email: sales@multitorque.com