Principle of the Diaphragm Pump

An elastomer diaphragm (see illustration) is moved up and down by an eccentric. On the down-stroke it draws the air or gas being handled through the inlet valve. On the up-stroke the diaphragm forces the medium through the exhaust valve and out of the head. The compression chamber is hermetically sealed from the drive mechanism by the diaphragm. The pump transfers, evacuates, and compresses completely oil free.

Features of Diaphragm Pumps