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- sales@numaticpumps.com
- Mumbai, Maharashtra, INDIA
We are one of the leading AODD Pumps manufacturer & exporter in Mumbai, India.
Engineered for Performance. Built to Last.
We design and manufacture robust, high-performance Air Operated Double Diaphragm (AODD) pumps for industries across the globe. Trusted by chemical, pharma, and process industries for quality, durability, and support.
We have a complete range of AODD Pumps in compare to material and size. Our range of Air Operated Double Diaphragm Pumps include PP AODD Pumps, PVDF AODD Pumps, SS AODD Pumps, Aluminium Pumps. Thinking of AODD Pumps we have all sizes from 0.5” to 3”.
We are one of the Air-Operated Double Diaphragm (AODD) pumps, offering innovative pumping solutions across industries including chemical, pharmaceutical, mining, food & beverage, and wastewater treatment. With years of experience and a commitment to quality, we design and manufacture pumps that are built to last, perform under pressure, and meet global standards.
Categories:
Metallic AODD Pumps (Aluminum, Stainless Steel, Cast Iron)
Non-Metallic AODD Pumps (Polypropylene, PVDF, PTFE)
Sanitary/Hygienic AODD Pumps (for food, pharma)
High-Pressure AODD Pumps
Spare Parts & Accessories
Industries We Serve
Chemical Processing
Paints & Coatings
Pharmaceuticals
Mining & Slurry
Food & Beverage
Water & Wastewater
Oil & Gas
A diaphragm pump is a type of positive displacement pump that transfers liquids by using a flapper valve or a ball valve in conjunction with the reciprocating action of a diaphragm.
This pump is also known as an AODD pump, and it is utilized in situations where a single pump must handle a variety of liquid types and viscosities. These pumps are self-priming, lightweight, and suitable for handling thick liquids. Air diaphragm pumps are used in nearly all major industries. They are commonly used for the transportation of chemicals, acids, and abrasive fluids, such as concrete. They are common in automobiles and airplanes as well. There are several types of diaphragm pumps, including membrane pumps, air-operated double diaphragm pumps (AODD), and pneumatic diaphragm pumps.
Air-operated double-diaphragm (AODD) pumps are designed to handle viscous fluids, sludges, and extremely corrosive chemicals without leaking. Two flexible membranes or diaphragms that are fixed to a single shaft are characteristics of AODD pumps. Fluids move as intended as a result of these diaphragms’ forward and backwards motion. By alternately directing air to either of two air chambers on the diaphragms, AODD pumps employ compressed air rather than a motor to drive the diaphragm.
An AODD pump is a type of positive displacement pump that is driven by compressed air. A coupled shaft transfers the compressed air from one chamber to the other, allowing the chambers to move at the same time. This back-and-forth action drives liquid from one chamber into the discharge pipe while filling the other chamber with liquid at the same time.
When compressed air is connected to an AODD pump, it enters an air motor, which directs the air to push a diaphragm, ‘pushing the liquid out.’ The pushed diaphragm is connected to a shaft, which pulls the opposite diaphragm, creating a cavity on the other side and drawing in the liquid. One-way valves, usually a ball valve or a flap valve, are located at the bottom and top of the two cavities. When a cavity is closed, the liquid is pushed up and out, whereas when a cavity is opened, the liquid is sucked in. This will then alternate between closing the cavity on one side and opening the cavity on the other. This can all happen at speeds of up to 400 cycles per minute.
AODD pumps are almost completely leak-free. Because there are only stationary seals between the wetted parts and the surrounding environment, leakage can occur only if one or both diaphragms fail. Diaphragms should be replaced on a regular basis as part of a general maintenance programmer, according to the manufacturer’s recommendations. Because of the benefit of pressure balancing provided by the compressed air supply, diaphragms in an AODD pump wear less than those in a mechanically driven diaphragm pump.
AODD pumps can handle abrasive, highly viscous fluids, sludges, and slurries. Furthermore, because of the gentle pumping action, they are ideal for shear-sensitive fluids. The four internal check valves are typically designed with a ball (or cone)/seat or a flap. Ball valves offer a better seal and are less prone to wear than flap valves. Because flap-type valves are hinged, prolonged use causes fatigue at the flexing point. Because the ball is free to rotate during operation and settle in a different position on the seat, ball valves wear more evenly. Flap-type check valves have the advantage of being able to pass large solids entrained within the pumped fluid more easily.
An AODD pump can be run dry indefinitely because there are no internal seals or moving components that require lubrication or cooling. AODD pumps are self-priming, with some having a suction lift of up to 8m.
Because they are powered by compressed air rather than electricity, AODD pumps are suitable for use in hazardous areas. As long as the air vent is above the liquid level, an AODD pump can be safely submerged.
AODD pumps have a high suction lift, are self-priming in most fluids, and can run dry. These pumps can easily handle low to medium viscosity fluids (including those with large suspended solids) and can pump both corrosive and flammable liquids. In the processing industries, it is said that if a material can be poured into an AODD pump, these pumps can generally pump it.
AODD pumps are relatively inexpensive to purchase and operate due to their simple design, and when combined with their efficiency and accuracy, stainless steel versions are well suited for certain food grade sanitary processing applications such as filling, dispensing, and metering fluids, as well as water removal.
AODD pumps have a high suction lift, are self-priming in most fluids, and can run dry. These pumps can easily handle low to medium viscosity fluids (including those with large suspended solids) and can pump both corrosive and flammable liquids. In the processing industries, it is said that if a material can be poured into an AODD pump, these pumps can generally pump it.
AODD pumps are relatively inexpensive to purchase and operate due to their simple design, and when combined with their efficiency and accuracy, stainless steel versions are well suited for certain food grade sanitary processing applications such as filling, dispensing, and metering fluids, as well as water removal.
The diaphragm pump market is estimated to grow at a CAGR of more than 6.1% between 2022 and 2025. The COVID-19 pandemic has had a detrimental influence on the growth of the air operated diaphragm pump industry, as the industrial sector saw a major drop in demand for AODD Pumps during the pandemic, resulting in lockdowns. During 2022 and 2023, smaller firms and organizations with relatively poor financial positions were shut down, lowering overall industrial AODD Pumps manufacturing capacity and consolidating the consumer sectors. Furthermore, as demand for oil and gas grows, oil prices recover, and an increasing number of onshore and offshore fields reach maturity, exploration and production activities are expected to shift to deeper offshore regions, increasing offshore ultra-deepwater projects. This, in turn, is likely to boost the market for double diaphragm pumps throughout the forecast period. However, technical developments in traditional pump alternatives, such as solar pumps, are projected to impede the diaphragm pump market throughout the projection period.
AODD pumps are air-powered displacement pumps that are distinct from all other positive-displacement pumps. While pumping, the diaphragm is balanced due to air pressure acting on the full surface of the diaphragm. This significantly increases diaphragm life over mechanically driven diaphragm pumps. Because compressed air is restricted, the pump’s maximum pressure is likewise safely limited. As a result, Air Operated Double Diaphragm pumps are ideal for an on-off cycle, on-demand intermittent, and continuous operation needs.
The AODD pump’s basic genius implies that there are just 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 source and the liquid. Driving the diaphragms with compressed air rather than the shaft balances the strain on the diaphragm, eliminating mechanical stress and extending diaphragm life. This also permits the valve balls on the valve seats to open and close, directing liquid flow. Because of its simple design and operation, it is simple for the operator to identify the proper pressures and flows to maximize its functioning.
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