AP 20 Metal Diaphragm Pump

The AP 20 Metal Diaphragm Pump is an air-operated diaphragm pump with a metal housing, a 2" threaded connection, and a capacity range of 0–565 liters per minute.

Air-operated diaphragm pumps operate on the principle of a double diaphragm that moves alternately with compressed air; their seal-less design ensures leak-free transfer, they are self-priming, and they are not damaged by dry running.

It is manufactured with housing options in aluminum, cast iron, and stainless steel (316); alternatives for internal components and diaphragms include Neoprene, Buna-N, Teflon, Viton, Santoprene, and EPDM.

The correct combination can be selected based on the pumped chemical; the stainless steel option is preferred for corrosive liquids and processes requiring hygiene; the Teflon diaphragm option allows for use with aggressive solvents.

It offers a discharge head of 0–84 mss and a suction lift of 6–8 m; it can handle fluids containing solid particles up to 6 mm in size.

Compressed air in the 0–8.4 bar range is sufficient for operation; it consumes 33–169 m³/h of air through a 3/4" air connection.

The metal-bodied series offers a durable construction for demanding industrial environments prone to mechanical impact.