www.saVRee.com Diaphragm Pump Explained| pg. 4
Diaphragm Pump Operation
Diaphragm Pump Construction Materials
The pump casing is often manufactured from aluminium or some sort of polymer
based material e.g PTFE; aluminium makes the pump light whilst polymer materials
make the pump corrosion resistant.
Diaphragms can be manufactured from rubber, thermoplastic elastomer (TPE) or
polytetrafluoroethylene (PTFE).
Diaphragm Pump Advantages and Disadvantages
Diaphragm pumps are very versatile and are consequently used in many different
industries for many applications; they are:
Well suited to operate in corrosive environments, or pump corrosive fluids,
since their parts can be chosen to be corrosion resistant.
Can be manufactured to be intrinsically safe i.e. the pump is not a source of
ignition when placed within an explosive or flammable environment.
Can operate even if partially or fully submerged (providing the air exhaust is
above the surface of the submerging liquid).
Are self-priming (positive displacement pumps are self-priming, thus so are
diaphragm pumps).
Due to their size, these pumps are lightweight and portable.