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Advantages of Using an Air Operated Diaphragm Pump


Air operated diaphragm pumps use compressed air as the power source to actuate the diaphragm. They are extensively used to transfer various fluids and slurries in a wide array of industrial applications. We will explore the key benefits of choosing an air powered diaphragm pump for your application.


What is Diaphragm Pump


Diaphragm pumps are a type of positive displacement pump that uses a combination of the reciprocating action of a rubber, thermoplastic or teflon diaphragm and suitable non-return check valves to pump fluids. An air operated diaphragm pump uses compressed air as the power source to flex the diaphragm up and down and create suction and discharge. They are one of the most versatile types of pumps available due to their ability to handle a wide variety of liquids, solids and gases without risk of contamination.


Reliable and Durable Operation


The diaphragm flexes back and forth when air pressure is applied on alternate sides of it. This allows the diaphragm material to handle the wear and tear. Air operated diaphragm pumps contain very few moving parts. The simple design and lack of metal-to-metal contact results in low maintenance costs and less downtime.


These pumps are able to maintain consistent flow rates over time. Proper selection of diaphragm material ensures ten thousands of hours of reliable service. Common diaphragm materials include Buna-N, neoprene, PTFE, polyurethane, etc. The availability of different diaphragm materials allows matching the material properties to the fluid being pumped for maximum diaphragm life.


Pulsation-Free Flow


The continuous back and forth motion of the diaphragms coupled with the use of multiple heads results in a smooth, continuous and pulse-free flow. This makes these pumps well suited for tasks like filtration, chemical injection, transfer through long pipelines, etc. where fluid pulsations can create issues.


The pulse-free flow also results in less stress on the pump components. Noise levels are lower compared to other pump types. Lack of pulsations also means accurate metering of fluids.


Handles Viscous Fluids


Air operated diaphragm pumps are capable of handling fluids with a wide range of viscosities. Shear thinning and shear sensitive fluids can be pumped easily. The self-priming capability allows pumping of viscous fluids.


By selecting suitable diaphragm materials like PTFE or Teflon, even sticky fluids can be handled efficiently. Transfer of fluids like heavy crude, asphalt, molasses, resins, glues and greases is possible due to the positive displacement action.


Handling of Solids


The self-priming, positive displacement characteristic enables diaphragm pumps to efficiently handle fluids containing solid particles. Large solids can cause wear on the diaphragm, but small diameter solids suspended in fluids are pumped easily.


By selecting the appropriate combination of check valves and diaphragm material, even abrasive slurries containing solids like powdered limestone, titanium dioxide, etc. can be pumped successfully. This makes the pumps suitable for fluid transfer in mining, ceramics and other industries dealing with suspensions and slurries.


Sanitary Operation


Diaphragm pumps are self-priming and run in a "pull" mode, drawing fluid in on the suction stroke. This provides a gentle pumping action that maintains product integrity. The diaphragm provides complete fluid isolation, eliminating contamination risks. These characteristics suit diaphragm pumps well to hygienic and sanitary applications.


Air powered diaphragm pumps are easy to clean and sterilize. Models constructed from FDA approved materials are available for food, beverage and pharmaceutical duties. Airtight enclosures also contain noise and release no exhaust emissions.



Rely on the AEROPRO A-15 Pneumatic Double Diaphragm Pump to power through your fluid transfer tasks. Its uncomplicated design backed by robust construction will keep your vital processes pumping along, year after year.


Light weight, easy operatingBeing capable for printing ink cycling supplySuitable for all kinds of corrodibility liquid, with granuliformIdeal pump for regular paint, PU pain, UV special paint etc.

Widely used in paint spraying, chemical industry chemical, ceramics, biotechnology, medical, food industry.



Pressure Ratio:1:1

Operating Pressure:3-100psi(2-7bar)

Air consumption:5.89scfm(10m3/h)

Max.pump speed:4500CPM

Air inlet size:1/4"

Air exhaust size:3/8"

Fluid inlet size:3/8"


AEROPRO has quickly risen to become an unrivaled global producer of air-powered devices including air tools, air spray gunair nailer, airless paint sprayer, and etc.

AEROPRO seeks independent sales agent to represent and market our industry-leading pneumatic tools. We support OEM, ODM, OBM customization, small order quantity is acceptable and samples are available.

Make any cooperation possible. Any services related to the product, inquire with us now! Sales@Aeroprotools.Com