Double Diaphragm Pump: Here is What You Should Know

Many industries highly rely on double diaphragm pumps to make sure that their operations run smoothly. Be it chemical manufacturing, pharmaceutical, or automobile industry, they remain on track and complete the manufacturing process smoothly because of this innovative tool. What is a double diaphragm pump you ask? In simple words, it is a pump to move large amounts of fluids. However, in this post, we will discuss an air-based double diaphragm pump (AODD), which functions with compressed air. This machinery can very easily handle large quantities of fluids like slurries, abrasive fluids, and other sensitive fluids.  

How Does an Air-Operated Double Diaphragm Pump Work?

Air-operated double diaphragm pump (AODD) consists of two pumping chambers that are alternately filled and discharged by the movement of flexible diaphragms. Compressed air is filled in and then vented from the chamber on the other side. The basic function of the AODD Pump is to move the fluids in repeated and alternate strokes. Although some of the diaphragm can be driven directly when connected to the motor, this air-driven machinery is different. It uses compressed air with the distribution system and directs the air directly into the 2 chambers on the opposite side of the diaphragm. Having that said, the machinery can be a bit noisy, prone to icing, and limited to just low-pressure applications.

Benefits of Air- AirOperated Double Diaphragm Pump

The self-priming, as well as the self-drying ability of the double diaphragm pump, make it a popular choice among various industries like aerospace, automotive, building products & construction, ceramics, chemical, and disinfectants among others. There are a lot of benefits of this machinery, let us list some of it out for you.

No requirement for electricity:

You will not have to deal with the electricity bill for using this tool so it is a great investment and very reliable. Yes, that is right! It does not require electricity to run and can be used even in small- confined. So, it makes the usage of this machinery safe, there are no chances of mishaps or accidents. 

Can run dry for hours:

The best part is that if you have left the machine running with any fluid in it, still you need to worry. The fluid-transferring tool can run dry for hours without damaging the motors or it’s any other components which is not true for other pumps. The components of other pumps can get damaged, which can also shorten their life. 

AODD pump can function fully submerged:

There is no stopping for the air-based double diaphragm pump. It can be completely submerged in the fluid and still function perfectly. 

• The components of the pump are mostly compatible with the fluids. 
• The air exhaust point is above the liquid level, so the fluid does not enter the air chamber which makes the machine go with the flow.

Design:

The design of the liquid handling machinery is leak-proof. It is a non-expensive and user-friendly design that prevents any sort of leakage. Also, there will be no additional costs required for the maintenance of seals and packing.

Flexible:

The different industries have various requirements when it comes to using the diaphragm pump. Some need bigger machinery with certain features whereas others need smaller diaphragm pumps. The pump is available in many different materials, sizes, and certifications. The AODD with its many features and benefits is one of the most used pumps in the world. 

Viscous Liquids:

The air-operated diaphragm can handle a large amount of high and low-viscosity liquids. The high-viscosity liquids resist flow and pour out slowly like honey and vegetable oil. The low-viscosity liquid flows easily such as water or milk. The AODD can handle both forms of liquids very easily which makes it a popular choice in industries. However, the same cannot be said for other liquid-handling pumps as most of them cannot handle highly viscous liquids.  Some of them will stop working and will break- down under some conditions.

Tips Choose the Right Air-operated Double Diaphragm Pump

 Here are some of the tips that you must consider while choosing AODD (Air- operated double diaphragm pump.

Fluid:

The makeup process for fluid is crucial to the choice of the pump. Does it have a chemical chamber to handle chemicals? Is it clean or slurry? (consist of particles)

Viscosity:

It is essential to consider what kind of fluid transfer you will be using the machinery for. If you are using it to transfer more viscous liquids, then you will need the double diaphragm pump with a more robust motor.

Flow Rate:

You need to know the exact flow rate per unit so that you can choose the correct size of the pump and the right size of the piping as well.

Pressure:

It is one of the key factors that is intertwined with pressure is the flow- rate, it is a vital factor that will help choose the right pump, that will make a great balance between the flow and the pressure.

Final Words…

The air-operated double diaphragm pump is one of the best pumping technologies out there for transferring applications. It is easy to maintain and has so many benefits, which is why it is widely used by every kind of industry. Whether your workpiece requires a harsh or slow performance, you can always count on a double diaphragm pump. If you are looking for innovative, effective yet affordable solutions for pump applications for your business, then you can rely on Nirmala Pumps. They provide the best products with value-based solutions. 

Frequently Asked Questions:

Where is the air-operated double diaphragm pump used?

Some common applications of AODD pumps are chemical processing, waste-water treatment, paint-ink treatment, and transfer of food products. Their self-priming and self-drying ability make them a popular choice.

What is the working principle of the AODD pump?

Compressed air is transferred from one chamber to another through the connected shaft, which allows the chamber to move and pump the liquid simultaneously.

How to control the AODD pump?

To control the performance of the equipment, first of all, install an air-pressure regulator assembly in the pump’s air supply line to control the incoming air pressure. All you have to do is install the correct air-line size with the air- regulator and it will solve most of the problems, making the AODD pump function efficiently. 

How much air does the AODD pump use?

Most of the air-operated double diaphragm pumps can handle the pressure up to 125psi or 8.6 bar. Operating it above or below these ranges can cause failure or damage to the equipment.