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Types of Diaphragm Pump and Their Application

Diaphragm Pump

Diaphragm pumps are one of the most versatile and popular equipment used in various industrial applications. These pumps come in different types, each with unique functionality, construction, and applications. Diaphragm pumps are commonly used in chemical, pharmaceutical, food, and beverage, waste management, and many other industries. In this blog post, we will discuss the different types of diaphragm pumps, their construction, and their applications. Whether you are looking for a pump for your business or just interested in learning more about diaphragm pumps, this guide will give you valuable insights.

What is Diaphragm Pump?

A diaphragm pump is a positive displacement pump that uses a flexing diaphragm to move fluid or liquid. It works by creating a partial vacuum, which draws the fluid through one side of the chamber and forces it out through the other. Diaphragm pumps can handle liquids with high viscosities and extreme temperatures while providing reliable pulsation-free performance in both low-pressure and high-pressure applications. They are ideal for transfer pumping, metering, mixing, dosing, filtering and sampling.

Types of Diaphragm Pump 

Air-Operated Diaphragm Pumps (AODD)

Air-operated diaphragm pumps are one of the most widely used diaphragm pumps. These pumps are powered by compressed air, which powers the diaphragm’s movement and creates suction that draws in the fluid. AODD pumps are suitable for handling a wide range of fluids, from highly viscous liquids to abrasive slurries. These pumps are used in wastewater treatment, chemical processing, and paint manufacturing.

Electric Diaphragm Pumps

Electric diaphragm pumps are powered by electricity and are commonly used in applications that require low to medium flow rates. These pumps typically have a smaller capacity than AODD pumps and are used in applications such as transferring and dispensing chemicals, detergents, and solvents.

Hydraulic Diaphragm Pumps

Hydraulic diaphragm pumps are powered by hydraulic fluid and are suitable for handling highly viscous materials, including sludge, slurry, and abrasive. These pumps are commonly used in mining, oil and gas, and construction industries.

Pneumatic Diaphragm Pumps

Pneumatic diaphragm pumps are powered by air pressure and are suitable for handling fluids that contain large particles, such as debris or solids. These pumps are commonly used in wastewater treatment, oil and gas, and chemical processing industries.

Sanitary Diaphragm Pumps

Sanitary diaphragm pumps are designed for use in applications requiring strict hygiene standards, such as food and beverage processing and pharmaceutical manufacturing. These pumps feature a smooth finish and are made of food-grade materials to prevent contamination.


Diaphragm pumps are an essential piece of equipment in various industries. The type of diaphragm pump you choose depends on your application’s specific needs, including fluid type and flow rate. Familiarizing yourself with the different types of diaphragm pumps and their applications can help you choose the right pump for your business. At SCL, we offer various diaphragm pumps suitable for various industrial applications. Contact us today to learn more about our diaphragm pump products.

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