Diaphragm Pumps (also called or known as a Membrane pump, Air Operated Double Diaphragm Pump (AODD) or Pneumatic Diaphragm Pump) is also a type of positive displacement pump that uses a combination of a reciprocating action with a rubber, thermoplastic or teflon diaphragm and suitable valves either side of the diaphragm (these can be a check valve, butterfly valves, flap valves, or some other type of shut-off valves) to pump a fluid/liquid/chemical.
3V VITON DIAPHRAGM PUMP
TRANSFER III DIAPHRAGM PUMP
OEM COMPACT PERISTALTIC PUMP