Recently, we gave an overview of how air operated double diaphragm pumps work. Today, we’re going to look at the advantages and disadvantages of a diaphragm pump, how they compare to other pump types, and whether they’re the right choice for your application.
Read on to find out.
Diaphragm pumps are widely used across industries such as mining, chemical processing, and general fluid transfer due to their versatility and reliability. But like any pump, understanding both the pros and cons is key to making the right decision.
Advantages of a Diaphragm Pump
Diaphragm pumps offer several benefits over other pump types, making them a popular choice across a wide range of applications.
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No Electricity required: These pumps operate via compressed air. This means that they can be used in environments where an electrical supply is not suitable i.e. in hazardous areas.
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Simple Operation: Without requiring complicated wiring, and no need to have an electrical control, AODDs are easy to install and operate. In fact, they are much easier to use than many other pump types.
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Can Run Dry: Diaphragm pumps can run dry without damaging the pump or cause any issues. Some other pump types will always need to stay primed and not run dry or they will either damage the whole pump or some of the parts, resulting in a costly rebuild. Here is some of those pump types that can not run dry:
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Viscous liquids: Air operated double diaphragm pumps can handle a variety of fluid viscosities. Having a pump which can transport both high and low viscous materials means that a pump can be used for a variety of tasks. Some other pump types cannot handle highly viscous fluids and will stop working or breakdown under the same conditions.
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Abrasive Materials: Just as with handling low and high viscosities, an AODD pumps can also process corrosive or abrasive fluids, as well as more solid or powdered materials.
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Gentle pumping: These diaphragm pumps have no impellers or other moving parts exposed to the liquid being pumped, which means that they are suited for transporting shear sensitive media.
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Safety: All of the above combined, also means that an AODD pumps is a great option when pumping volatile or dangerous liquids.
Disadvantages of Diaphragm Pumps
While there are many advantages of a diaphragm pump, there are a few considerations to keep in mind depending on the application.
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Pulsation: Diaphragm pumps produce a pulsating flow due to their reciprocating operation. In applications requiring a smooth, consistent flow, a pulse dampener can be used to minimise this effect.
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Air Efficiency: Air operated diaphragm pumps rely on compressed air, which can be less energy-efficient than electrically driven alternatives. However, with a well-maintained and optimised air system, this can be effectively managed.
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Valve Wear: The check valves can experience wear over time, particularly when handling abrasive or contaminated fluids. Routine inspection and maintenance help ensure consistent performance and long service life.
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Handling of Solids: Diaphragm pumps are capable of handling solids, but performance depends on particle size and fluid characteristics. Correct pump selection and system design are important to minimise wear and prevent blockages.
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Noise: Due to the use of compressed air and the reciprocating motion, these pumps can generate more noise than some alternatives. In most cases, this can be reduced with mufflers or appropriate installation practices.
Where Are Diaphragm Pumps Used?
Diaphragm pumps are commonly used across a wide range of industries, including:
- Mining
- Chemical transportation and processing
- Water and wastewater treatment
- General industrial applications
Their ability to handle a variety of fluids and operating conditions makes them a versatile solution across these sectors.
Is a Diaphragm Pump Right for You?
Understanding the diaphragm pump advantages and disadvantages is essential when selecting the right pump for your needs. While they offer excellent flexibility, safety, and ease of use, factors such as air consumption, pulsation, and maintenance requirements should also be considered.
If you’re unsure whether a diaphragm pump is suitable for your application, it’s always best to seek expert advice.
If you’re looking for specific models, explore our range of air operated diaphragm pumps or contact one of our experienced technicians for guidance.
