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Audio version — Types of Diaphragm Pumps & Their ApplicationsWhen we talk about diaphragm pumps, there are generally three types that are most commonly used in industries. Each has its own set of applications, advantages, and limitations. Let's break them down one by one.
This is the most commonly used type of diaphragm pump. Even within AODD pumps, there are two key variations based on the valve mechanism used:
Used for all kinds of liquid transfer applications. Whether you're moving chemicals, solvents, or water-based solutions, NRV-type AODDs handle it well. This is the most widely used variant in Indian industries.
Designed for handling solid particles bigger than 10–12 mm and liquids with more than 60% solid concentration. If the liquid is thick or slurry-like, flap-type diaphragm pumps are a better fit.
As the name suggests, this pump is designed for transferring dry powders. While it serves a niche purpose, there are quite a few limitations — especially with the kind of powders it can handle and the distance it can transfer them.
So it's not as versatile as the liquid-handling types, but where powder transfer is needed, it gets the job done.
This is the latest addition to the diaphragm pump family. The biggest advantage of an EODD pump is the running cost, which is almost one-third compared to an AODD pump — since it uses an electric motor instead of compressed air.
Our engineers at Antlia Engineering Works, Mumbai will help you select the right pump type based on your fluid, duty cycle, and process requirements — free consultation.
Get a Free Consultation Call +91 9819395995The three main types are: 1) AODD (Air Operated Double Diaphragm) pumps in NRV and Flap type variants, 2) Powder Type Diaphragm Pumps for dry powder transfer, and 3) EODD (Electrically Operated Double Diaphragm) pumps for high-duty cycle applications.
NRV (Non-Return Valve) type AODD pumps are used for all kinds of liquid transfer. Flap type AODD pumps are designed for solid particles bigger than 10–12mm and liquids with more than 60% solid concentration — ideal for thick or slurry-like fluids.
An EODD (Electrically Operated Double Diaphragm) pump uses an electric motor instead of compressed air, reducing running costs to about one-third of an AODD pump. It is best suited for operations running more than 16 hours a day, where savings on running costs justify the higher initial investment.
Powder type diaphragm pumps are designed for transferring dry powders. They serve a niche purpose with limitations on powder types and transfer distances. They are suitable where liquid pumps cannot handle dry bulk materials.