AODD (air-operated double-diaphragm) pumps have a wide range of applications, including petrochemical and food & beverage. Transferring extremely abrasive or viscous liquid is made possible by their special design. It is a positive displacement pump that draws its power from compressed air. AODD Pumps perform better due to their sturdy construction little maintenance needs and a wider range of applications. Even in harsh settings, AODD pumps have a long operational lifespan due to their reduced diaphragm wear. Here we are going to discuss the top factors to consider while choosing an AODD (air-operated double-diaphragm) pump. So let’s get started!
Factors to Consider When Choosing an AODD Pump
Selecting the appropriate pump doesn’t have to be tough, even with their wide range of options. Let’s go over the top five criteria to take into account when choosing a pump for your application:
Type of Liquid
The type, composition, and character of the fluid are the most important factors to consider to minimize corrosion of the wetted parts and wear and tear on the pumping equipment. The characteristics that set them apart include the following: viscosity, density, specific gravity, abrasion factor, solid content, and pH level.
Viscosity Level Of Fluid
The second thing to take into account when selecting an AODD pump is the viscosity of your fluids. In contrast to certain other types of pumps, air-operated double-diaphragm pumps are renowned for being kind to the fluids they are pumping. Their seamless construction reduces maintenance requirements without causing the materials they’re pumping to shear or deteriorate.
Flow Rate
The flow rate is determined by the fluid’s viscosity and the pump’s size. It is crucial to consider these elements to ensure that your pump can assist you in achieving the objectives of your operation.
The draining time and flow rate are correlated. Pump size is initially determined by considering the flow rate. Opt for a larger pump with larger ports, such as discharge and suction connections, for higher flow rates, and vice versa. In general, draining times are inversely correlated with flow rates. It is customary to increase the port size of an air-operated double-diaphragm pump by one when sizing it for optimal longevity and efficiency.
Pressure conditions
Selecting the right pump size is helped by considering the necessity of maintaining proper pressure conditions inside the AODD chambers. The pressure at the pump’s input is known as suction pressure. Because AODD pumps are self-priming, they can be used in situations involving both suction lift and flooding suction.
One must make sure the pressure is controlled because a higher pressure provides a better flow rate. The capacity of the suction valves to lift objects can be hampered by excessive pressure. There could be a lag in this. The pressure at which the fluid is pushed also referred to as delivery pressure or discharge pressure determines its height.
Operating pressure
An air-operated double-diaphragm pump has a one-to-one ratio which means that the air pressure input to the pump equals the highest pressure the pump will exert at discharge. This determines your pump’s flow rate. As a result, before selecting a pump, you must first determine the maximum air pressure that your air compressor can produce.
Pumping temperature
This is perhaps the least important consideration when selecting an AODD Pump. The pumping temperature of the fluid influences how long the pump casing, seals, and diaphragms will endure. An inappropriate material selection based on the pumping temperature can cause premature pump failure.
Closing Words
Selecting the appropriate double diaphragm pump for your operations can have a significant impact on a production process where high levels of dependability and efficiency are necessary. Ceracin has been the leading manufacturer of air-operated double-diaphragm (AODD) pumps in India. We provide a variety of solutions to meet specific market application needs. Contact us for more!
Frequently Asked Questions
What is the working principle of air-operated double-diaphragm pumps?
It has a connected shaft that enables the chambers to move concurrently by moving the compressed air from one to the other. While the other chamber is being filled with liquid, this back-and-forth motion pushes the liquid out of one chamber and into the output pipe.
What are the essential components of an AODD pump?
In the air-operated double-diaphragm pump design, there are only a few dynamic wetted parts: the two diaphragms joined by a common shaft, the two intake valve balls, and the two output valve balls. The diaphragms serve as a barrier between the compressed air supply and liquid.
How Do I Control the Flow Rate in an Air-Operated Pump?
There are various methods for controlling your pump’s flow rate. A filter regulator is the most basic and widely used type. Filter regulators safeguard the pump’s air valve by eliminating solid and liquid pollutants from the airlines while also enabling more precise pump control. The air filter regulator can also assist you in starting the pump in a progressive, soft way reducing stress on the pump’s components.
What are the main advantages of AODD pumps?
Air-operated double-diaphragm pumps provide unsurpassed benefits over other pump technologies, making them the obvious choice for many of the world’s most challenging applications.
AODD (air-operated double-diaphragm) pumps have a wide range of applications since they can handle everything from water to solid-laden slurries, including volatile and toxic liquids. Their versatility enables a single pump to handle a variety of applications without the need for expensive motor drives or important sizing considerations.
What is the importance of flow rate in an air-operated double-diaphragm pump?
The flow rate and the pump’s size are directly correlated. It’s crucial to keep this in mind while choosing the appropriate air-operated double-diaphragm pump size for the necessary flow rates.
You may simply adjust the flow rate by adjusting the pressure using a filter regulator on each pump’s air input. You may adjust the pressure to enhance or decrease flow with this easy addition. Different kinds of pumps such as centrifugal pumps, frequently make it more difficult to adjust the flow.