Air Operated Diaphragm Pumps (AODD pumps) are positive displacement pumps that use compressed air to move fluids. They consist of two flexible diaphragms that alternate in motion, creating a vacuum that draws fluid into the pump and then expels it. This design allows for efficient handling of various liquids, including slurries and viscous materials. These pumps are known for their versatility and can operate in hazardous environments since they do not require electricity. AODD pumps are commonly used in industries such as chemical processing, food and beverage, and water treatment, making them essential for many applications.