Used EDWARDS AA20 #293669109 for sale

EDWARDS AA20 is an air-powered pump which is designed for use in low-vacuum applications. It is capable of generating up to 28 inch (71 cm) of Hg vacuum and flows of up to 10 SCFM (283 litres/min). AA20 is a robust and reliable pump. It features an easy-to-use control panel which allows adjustment of the motor speed and air pressure to best suit the user's application. EDWARDS AA20 is also protected with NEMA 4X-rated circuitry for extra safety and long life. AA20 pump utilises an air chamber consisting of a top dome, a diaphragm, and a bottom dome. The diaphragm acts as a piston within the chamber; when the pump is activated, air is forced into the chamber, pushing the diaphragm downward and increasing the vacuum within the pump. As the diaphragm moves up and down, air is drawn into and expelled from the pump. The design of EDWARDS AA20 also features a gas ballast valve, which helps to reduce the temperature in the pump chamber. This valve allows some of the air taken in by the pump to be cycled back, reducing the total gas load which is drew in each cycle. The gas ballast valve also helps to increase the pump's operating efficiency and prevent moisture from condensing within the pump chamber. AA20 also has an inlet port which allows it to be connected to a vacuum source. The inlet port comes equipped with a filter, so that any particulate matter which is drawn in by the pump is swept away and expelled away from the chamber. Furthermore, EDWARDS AA20 has an internal check valve, which prevents air from backing out should the intake pressure fail. EDWARDS A20 is a low-maintenance pump which also comes with an adjustable relief valve. This relief valve is designed to release air from the pump chamber in the event of a pressure build-up, allowing a safe and reliable operation. Overall, AA20 is a highly efficient and reliable pump, perfect for a wide variety of low-vacuum applications. Its efficient design ensures protection of the pump components, and its adjustable speed and relief valves offer the user extra flexibility. Furthermore, its easy-to-use design ensures minimal maintenance and long life.