Industrial pumps and be separated into two primary classifications: dynamic pumps and positive displacement pumps. 

Dynamic Pump Types:

  • Centrifugal pumps
  • Magnetic drive pumps

Positive Displacement Pump Types:

  • Rotary lobe pumps
  • Gear pumps
  • Progressive cavity pumps
  • Peristaltic pumps
  • Diaphragm pumps

Electric Diaphragm pumps:

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DYNAMIC PUMP TYPES AND APPLICATIONS

Dynamic pumps operate using rotating impellers or blades to move fluid efficiently between locations. Centrifugal pumps are the most common design and are well suited for high-flow, low-viscosity applications such as water treatment, chemical processing, and oil refining.

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CENTRIFUGAL PUMPS

Centrifugal pumps are generally cost-effective but can be limited in their compatibility with certain fluids. Their complex and delicate design makes them unsuitable for liquids containing abrasives or solids, as these can quickly wear and damage the impellers during operation. Operating at high rotational speeds, centrifugal pumps may also shear or degrade sensitive liquids—an important consideration for process and sanitary applications involving ingredient transfer. In addition, centrifugal pump designs offer limited flexibility in adjusting flow rates dynamically. To maintain motor performance and efficiency, the system’s application conditions, pressure, and flow rate must remain stable.

Diaphragm pumps can solve many of these common problems. Take a look at Diaphragm Pumps vs Centrifugal Pumps – Pros and Cons to see how they compare.

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MAGNETIC DRIVE PUMPS

Magnetic drive pumps eliminate leakage issues associated with mechanical seals; however, they are only suitable for clean, homogeneous fluids and are not recommended for applications involving solids. The magnetic coupling can also generate excess heat or transfer heat into the pumped fluid, potentially altering its composition. During continuous operation at higher flow rates, this heat can become significant enough to cause process materials to bake or adhere to the impeller magnet hub. Such buildup reduces performance over time and may ultimately lead to mechanical failure.

Is excess heat from your magnetic drive pump causing operational issues? Learn about potential alternatives in What Are Magnetic Drive Pumps – Benefits and Disadvantages.

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POSITIVE DISPLACEMENT PUMP TYPES AND APPLICATIONS

Positive displacement pumps are engineered to handle fluids across a broad viscosity range while delivering a consistent flow. This makes them well suited for applications that require accurate flow control or high-pressure operation. They are commonly used in the food, chemical, and pharmaceutical industries.

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ROTARY LOBE PUMPS

Rotary lobe pumps rely on complex timing gears housed within a gearbox to ensure the lobes do not come into contact inside the pump chamber—an important advantage of the design. However, these timing gears add mechanical complexity, require regular maintenance, and may need periodic replacement. Within the pump head, the lobe clearances are large enough to allow abrasive materials to pass through, which can gradually wear the lobes and reduce overall pump performance. In addition, these larger tolerances make rotary lobe pumps less efficient when handling thin or low-viscosity fluids, as the liquid can slip between the lobes, resulting in reduced lift and efficiency.

Want to know how electric diaphragm pumps stack up against rotary lobe pumps? Find out how they can improve transfer efficiency and cut energy costs—check out Comparing Rotary Lobe Pump Advantages and Disadvantages to Electric Diaphragm Pumps.

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GEAR PUMPS

Gear pumps are distinctive for their ability to handle high-viscosity fluids across a wide temperature range. However, their complex design results in higher maintenance costs, particularly due to the need for costly spare parts. Additionally, their size and typical flow rates make them unsuitable for applications requiring large bulk fluid transfer. Like many pumps with extensive internal metal-to-metal contact, gear pumps are also vulnerable to wear when handling abrasive fluids.

Are your gear pumps losing efficiency earlier than expected? Discover how electric diaphragm pumps can reduce costs and improve performance in Gear Pumps vs Diaphragm Pumps – Advantages and Disadvantages.

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PROGRESSIVE CAVITY PUMPS

The primary cause of progressive cavity pump failure is running dry. Continuous fluid flow is essential to lubricate the contacting surfaces between the rotor and stator. Power is transmitted to the internal screw through the pump casing via a rotary shaft seal. The mechanical seal, a costly wear component, is sensitive to heat, abrasives, and non-lubricating fluids, which increases the risk of leaks over time. Additionally, the mechanical seal can present sanitation challenges in food and personal care applications and is expensive to repair. Finally, the pumped fluid may be affected by the rotational churning and friction between the shaft and seal, which can transfer heat into the liquid and alter its properties.

Are progressive cavity pumps costing you money through extra maintenance and pump downtime? Have a look at What is a progressive cavity pump and what is it used for to discover electric diaphragm pump solutions.

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PERISTALTIC PUMPS

Peristaltic pumps are widely used and trusted for many applications, particularly those with smaller flow rates. However, users often find their large footprint and high maintenance requirements frustrating. The flexible hoses in peristaltic pumps gradually wear over time, especially when pumping abrasive fluids. Without a leak protection feature, hose rupture can result in leaks into the process stream, creating hazardous or undesirable conditions. Consequently, hoses must be replaced regularly to ensure safe and reliable operation.

Frustrated by the high maintenance costs of your peristaltic pumps? Have a look at Peristaltic Pumps vs Diaphragm Pumps and find the perfect pump for your situation.

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ELECTRIC DIAPHRAGM PUMPS

The QUANTM Electric Diaphragm Pump is an electrically operated double diaphragm (EODD) pump from Graco, designed to overcome many common challenges associated with other pump types. Compared to traditional industrial pumps, the QUANTM offers greater operational flexibility and enhanced control.

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KEY BENEFITS
  • Self-Priming

The QUANTM EODD pump is self-priming and delivers excellent suction performance.

  • Seal-Less Design

Its seal-less diaphragm design eliminates costly rotary seals, reducing spare part expenses and minimizing downtime.

  • Stalls Under Pressure

The QUANTM EODD is the only electric diaphragm pump that stalls under pressure without requiring sensors or extra controllers, preventing damage from clogged lines or closed valves.

  • Run Dry Capability

The pump can run dry without causing system damage, avoiding costly repairs.

  • Low Operating Costs

Its energy-efficient electric drive can reduce energy consumption by up to 80% compared to pneumatic systems.

  • Quiet Operation

Without the need for an air motor muffler, the QUANTM EODD runs much quieter than traditional AODD pumps.

  • Wide Operating Range

It handles varying flow rates, pressures, and applications safely, including shear-sensitive fluids, abrasives, and solids. The pump can also be configured with a variety of materials to suit most processes.

  • Compact Footprint

The pump’s small design saves valuable floor space.

  • Low Shear

QUANTM pumps provide gentle pumping action, minimizing the breakdown of sensitive materials.

Other industrial pump types Graco QUANTM EODD pumps
Narrow best efficiency point and preferred operating range Consistent reliability over operating range
Deadhead/stall causes severe damage Easily deadhead/stall with no additional equipment
Expensive/complex repair Easy to repair at low cost
Process changes can lead to cavitation No degradation due to changing conditions
Difficult to choose correct pump Simple pump selection (pressure/flow/chemical composition)
Shaft alignment difficult to maintain No spinning shaft seals; no alignment necessary
Not self-priming Excellent self-priming
High operating cost Energy-efficient drive; low operating cost
Damaged when running dry Can run dry indefinitely

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LARGEST PUMP RANGE IN AUSTRALIA

Our industry leading range of pumps include specialty chemical dosing pumpsdiaphragm pumpsHVAC pumpssubmersible pumpshigh-pressure and high-capacity pumps, through to more conventional transfer and pressure pumps. Our large capacity pumps include booster pump sets, as well as mine specification compliant, diesel trash pumps and diesel-driven packages

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OUR RANGE

We also stock a range of parts and accessories, including integrated controllers to ensure you get the most out of your pumping system. For chemical dosing applications, in addition to our range of digital dosing pumps, we also stock a variety of suction and injection units and lances, as well as calibration cylinders and multifunction valves, to deliver high quality chemical dosing solutions.

Popular brands of pumps we stock include Atlas CopcoDavey, EbaraGracoGrundfos, Iwaki, Onga, Pentair, Pioneer PumpProMinent, Pulsafeeder, Seko, TsurumiVelp, Walchem and many more.

 

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