www.saVRee.com Diaphragm Pumps 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.
•
Contain few parts and require little maintenance.