role="search" method="get" id="searchform1" class="searchbox" action="">
Contact Call now

How does a diaphragm pump work?

What is a diaphragm pump?

A diaphragm pump, also known as a membrane pump, is an air-powered pump that is designed to transport fluids. In this article, we’ll explain the working principle of diaphragm pumps, during which we’ll pay special attention to ARO diaphragm pumps. As a distributor for this quality brand, part of Ingersoll-Rand, we have a large assortment ARO diaphragm pumps for sale and for rent. Read this FAQ and find the diaphragm pump explained in detail.

How do diaphragm pumps work?

A diaphragm pump is a specific type of displacement pump that uses two flexible membranes. The membranes are connected by a central shaft, and create a separation between the compressed air and the fluid. A centrally located air valve alternately pushes one of the membranes to the side. As a result, one membrane expels fluid, while membrane number two draws new fluid in. The suction is the result of a partial vacuum that is created when the air behind the membrane is pushed into the atmosphere; when the vacuum occurs, atmospheric pressure pushes the liquid into the empty room. In the next stroke, the process is reversed: one membrane pushes liquid out of the filled chamber, while the empty chamber is filled with the help of atmospheric pressure. This, in a nutshell, is how diaphragm pumps work.

Reliability of ARO diaphragm pumps

ARO diaphragm pumps are highly versatile and reliable. The machines require very little maintenance and are easy to repair in the rare case a malfunction occurs. A patented design ensures that ARO motors cannot freeze or block. This makes ARO diaphragm pumps ideal as continuous process pumps for a wide range of fluids. Thanks to its pneumatic system, this dependable workhorse can also be used in areas with a high risk on fire or explosions.  

Applications ARO double diaphragm pumps

ARO (double) diaphragm pumps can be tailored to your needs. They are used in a wide range of industries, such as in the processing of water, food & beverage, pharmaceutics and oil & gas.The capacity can be regulated from slow to very fast: from 1 to 1040 liters per minute. They are supplied in different configurations to accommodate different kinds of fluids, such as water, chemicals, oil, creams and viscous liquids. When something changes within your company, you can easily move your pump and find an alternative application for it.

Our experts can help you with the installation and maintenance of your pumps, and are happy to advise you which pump is the best fit for your specific application. So is your diaphragm pump working incorrectly, or if you have questions about how a diaphragm pump works, please get in touch with our experts.