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Lutz - Double air operated diaphragm pumps

Double air operated diaphragm pumps, AOD pumps or diaphragm pumps. double-acting diaphragm pumps.

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Diaphragm pumps for many different applications

Diaphragm pumps are available as air-operated pumps. This type of pump is very versatile and can be used for a variety of purposes such as transporting, emptying and filling many types of chemicals, paints and food. Diaphragm pumps have built-in ball valves that make the pumps suitable for handling both liquids and gases. Capacity and pressure are easily regulated by the valves and the air flow inside the pump. 

You can use diaphragm pumps for everything from water to viscous media, as well as aggressive liquids. Here you can read more about the benefits of diaphragm pumps and the different types of pumps available on the market. Diaphragm pumps are widely used across many industries and serve many different purposes. So it's a big area to get to grips with to understand all about types, benefits, materials, applications and more.

Get more benefits from diaphragm pumps

One of the clear advantages of diaphragm pumps is that they are virtually maintenance-free, making them cheap and easy to run. The explanation for this is that the pump of a diaphragm pump does not contain any rotating parts. So the pump has a simple design and it does not require much to keep it in good condition. The only thing you need to replace on a diaphragm pump are the diaphragms and valves. 

It is easy to replace these spare parts. Other advantages include the fact that diaphragm pumps are self-priming. In addition, diaphragm pumps can have a large lifting height, which means that the pump is able to provide safe transport of liquid or other media over long distances. Another advantage of diaphragm pumps is that it is easy and safe to regulate the flow by turning a valve on the discharge side or by pressure regulation on the air inlet.

Different types of diaphragm pumps for different applications

Depending on the purpose of a diaphragm pump, there are different types of diaphragm pumps on the market. You can choose diaphragm pumps that are air driven or mechanical. The Double air operated diaphragm pumps , with a reliable air valve, have a low pulsation that is accessible from the outside. This makes changing the valves easy and safe, and you experience minimal downtime. Mechanical or electric diaphragm pumps are suitable for applications requiring low pulsation and smooth flow. These diaphragm pumps are typically more energy efficient compared to Double air operated diaphragm pumps. A mechanical diaphragm pump can reduce energy consumption by up to 5 times. Diaphragm pumps are simply designed and made of robust materials such as aluminium, stainless steel, PP and PVDF.

Three different types of diaphragm pumps:

  • Air-operated diaphragm pumps: This type of pump is designed to pump many types of chemicals, viscous media. The majority of the air driven pumps are approved for use in ATEX zones. Air-operated diaphragm pumps are available in both plastic and metal.
  • Mechanical or electrically driven diaphragm pumps: This type of pump is best suited for smaller flow and pressure applications. You will find them most often in smaller industrial applications. These can be applications such as boats, ships, vehicles and caravans, or as fresh water pumps.
  • Shaft-coupled diaphragm pumps: This type of pump has been used in the agricultural sector for many years. A shaft coupled diaphragm pump is used in conjunction with a tractor's PTO shaft, which drives the pump to pump liquids such as sprays through 3, 4 or 6 diaphragm chambers.

So depending on the industry and types of tasks, as well as many other factors, the different diaphragm pumps are used for different purposes.

Diaphragm pumps in the food industry

Diaphragm pumps are becoming more and more common in the food industry. Indeed, they meet the requirements and needs of food applications, providing efficient suction and pressure capacity for food production. A diaphragm pump for example can pump with viscosities up to 10,0000 cps. 

In addition, a diaphragm pump can also handle particles such as nuts, berries and other similar foods. There are specific EU regulations and rules to follow when using diaphragm pumps and other machines in direct contact with food. This is to ensure that the materials on the diaphragm pumps do not contaminate the media they handle and contaminate the application. For this reason, diaphragm pumps are most often made of stainless steel and plastic, as these materials comply with EU regulations.

Which diaphragm pump should you choose?

It's a good idea to get an overview of the task the diaphragm pump is to perform. First of all, you need to know which media the diaphragm pump will transport or pump. In fact, you need to be sure that your choice of pump is chemically compatible with the media you want to process. In addition, it is important to know which materials the diaphragm pump must be able to be configured for and what requirements the pump must meet. These can be requirements for wear, temperature and chemical compatibility. Or requirements such as the diaphragm pump being able to achieve high flow rates while minimising air consumption and operating noise.

Get professional advice on choosing a diaphragm pump

Get professional advice on which diaphragm pump is best suited for the purpose and task you need to solve. Quality is an important factor, including how reliable and efficient the diaphragm pump is. There is a wide range of accessories for diaphragm pumps. So you can also get advice for a tailor-made solution, so that the diaphragm pump fits exactly the application you need it for. 

If you need the diaphragm pump to handle chemicals and viscous media, you may need an air-operated diaphragm pump. Or if you have a smaller production with less flow and pressure, a mechanical diaphragm pump might be best. But there may be more factors and details you need to consider. So it's always a good idea to seek professional advice from experts with years of experience in diaphragm pumps and have your solution designed to meet your business needs in the long term.

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