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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