Air Operated Double Diaphragm Pump for Industrial Applications
The AODD pump is one of the most efficient and reliable workhorses in the industry when it comes to fluid handling. It is recognized for its simplicity in operation and reliability without the need for complex technology. It operates by using compressed air, and therefore, an air-operated double-diaphragm pump provides safe and reliable operation in harsh and hazardous environments.
At NND Oil & Gas, our air-driven fluid pumps are a great option for difficult-to-pump applications in industries like petrochemical plants, oil and gas plants, pharmaceutical plants, food processing plants, mining plants, marine plants, and other industries. The ability to use it for corrosive, abrasive, viscous, and solid-laden fluids is a great advantage. These features make the AODD pump a preferred solution across multiple industrial sectors.
How an AODD Diaphragm Pump Works
A double diaphragm pump works by utilizing compressed air to move two diaphragms in and out. As one side of the diaphragm is sucking fluid into the chamber, the other side of the diaphragm is pushing fluid out.
Because it is an air-driven fluid pump, it can:
- Self-prime without external assistance
- Run dry without damage
- Operate safely in explosive or hazardous areas
- Stall under pressure without mechanical failure
Key Advantages of Double Diaphragm Pump Technology
The popular usage of the double diaphragm air pump can be attributed to the following operational benefits:
- Suitable for corrosive, abrasive, and viscous fluids
- No electric motor required, ensuring intrinsic safety
- Easy flow control through air pressure regulation
- Minimal wear due to fewer moving parts
- Reliable performance under variable operating conditions
These advantages make the air operated double diaphragm pump highly reliable for demanding applications.
Types of Air Operated Double Diaphragm Pumps
Polypropylene (PP) AODD Pumps
At NND Oil & Gas, we offer high-quality polypropylene AODD pumps, and all wetted parts are made of polypropylene. Pumps of this type are used when the fluid being pumped is highly corrosive.PP pumps are used in highly acidic and chemical applications, where metal pumps would not function.
150 PP AODD
300 PP AODD
400 PP AODD
500 PP AODD
PVDF Double Diaphragm Air Pump
PVDF also offers increased mechanical strength at high temperatures, making this unit suitable for harsh chemical and petrochemical industries.
150 PVDF AODD PUMP
300 PVDF AODD PUMP
400 PVDF AODD PUMP
500 PVDF AODD PUMP
Stainless Steel (SS) AODD Pumps
The pump is made of robust stainless steel, offering long life and reliable performance for oil & gas and heavy industrial applications.
150 SS AODD
300 SS AODD
400 SS AODD
500 SS AODD
Solid PTFE AODD Diaphragm Pump
One of our most advanced technologies features our PTFE AODD diaphragm pump, constructed from virgin PTFE (polytetrafluoroethylene). These pumps are capable of handling nearly any fluid, including viscous fluids, chemically aggressive fluids, and fluids that contain solids.The compact design makes these pumps easy to maintain, keeping costs low and process uptime as high as possible. The PTFE construction provides excellent chemical resistance and is capable of handling extremely aggressive fluids such as concentrated nitric acid.
Key Capabilities:
- Maximum liquid temperature up to 150°C
- Excellent chemical and corrosion resistance
- Ideal for extreme chemical applications
Lined AODD Pump Systems
Common lining materials include:
- PFA
- PVDF
- FEP
Lined pumps are used to handle aggressive or reactive chemicals, thus increasing the lifespan of the pump and making the operation easier. We offer a wide range of AODD diaphragm pump models and materials as part of our complete pump solutions. Explore all available pump solutions here.
How to Select the Right Double Diaphragm Air Pump
Selecting the appropriate air operated double diaphragm pump requires specific operating and fluid properties. All of the materials are used for specific purposes.
Polypropylene (PP) Double Diaphragm Pump:
- Best for highly corrosive and acidic fluids
- Suitable for moderate temperatures
- Cost-effective chemical transfer solution
PVDF Double Diaphragm Air Pump:
- Ideal for strong chemicals and solvents
- Performs well at higher temperatures
- Enhanced mechanical strength
Stainless Steel Double Diaphragm Pump:
- Suitable for abrasive liquids and slurries
- Ideal for oil & gas and heavy-duty industrial use
- High structural strength and durability
Solid PTFE AODD Diaphragm Pump:
- Best for extremely aggressive acids
- Handles temperatures up to 150°C
- Maximum chemical resistance
Lined Air Driven Fluid Pump:
- For reactive or highly aggressive fluids
- Combines strength with chemical protection
- Extended service life in harsh conditions
AODD Pump Material Selection Guide
| Pump Type | Best Application | Temperature Capability | Chemical Resistance |
| PP | Corrosive acids | Moderate | High |
| PVDF | Strong chemicals & heat | High | Very High |
| SS | Abrasive fluids | Moderate–High | Moderate |
| PTFE | Extreme acids | Up to 150°C | Excellent |
| Lined | Reactive chemicals | Depends on lining | Very High |
Common Industrial Areas of Double Diaphragm Pumps
The equipment has many applications, and its versatility can be applied to many different industries.
- Oil and gas production and refining
- Petrochemical and chemical processing
- Pharmaceutical manufacturing
- Food and beverage processing
- Mining and mineral handling
- Marine and offshore operations
Its capacity to operate with varying flow rates and different types of fluids makes it a reliable air-driven fluid pump in industrial applications. The AODD diaphragm pump is widely used due to its flexibility and safe operation.
Get Expert Support for AODD Pump Selection
Selecting the proper air driven fluid pump is critical to ensure efficiency, security, and longevity. Our technical team considers the properties of the fluid, pressure requirements, temperature, and location to recommend the best air-operated unit.
Contact our team today to select the right air operated double diaphragm pump for your application and operating conditions.
Frequently Asked Questions
1. Are Air Operated Double Diaphragm Pumps self-priming?
Yes, Air-Operated Double Diaphragm (AODD) pumps are completely self-priming.
This is because, by using compressed air to operate the diaphragms, they can suck fluids without the need to be primed, allowing them to work even when the suction line is empty.
2. What is the maximum pressure for an AODD diaphragm pump?
The maximum pressure of Air-powered diaphragm pump, as a rule, depends on the air pressure provided and the specific pump model. In most configurations, they can operate up to 6 to 8 bar, or 87 to 116 psi.
3. Do Double Diaphragm Pumps have motors?
No, these pumps do not have electric motors.
They run on compressed air, which is used to operate the diaphragm. This air-operated type of valve is best used in hazardous or explosive locations, as they do not have electrical components that can cause safety hazards.
Because there is no motor:
- They are safer in flammable zones
- They can stall under pressure without damage
- They are less complex mechanically
This makes them widely used in industrial and oil & gas applications.
4. What viscosity can an AODD pump handle?
They are widely known for their capability to handle high-viscosity fluids. The pump can handle fluids as high as 10,000 cP, depending on the size and type of pump.
5. How do you clean an Air Operated Double Diaphragm Pump?
In cleaning, it depends on the type of fluid used and industry standards. Generally, the process includes the following steps:
- Flushing the pump with a compatible cleaning fluid
- Running the cleaning solution through the system
- Draining completely
- Disassembling if deep cleaning or inspection is required
In industries such as chemical and food, cleaning must adhere to operational safety guidelines.