AODD Pumps | Double Diahragm Pumps. Metex Corporation Limited is a leading manufacturer's representative and distributor of AODD Pumps (Air Operated Double Diaphragm Pumps) for a wide range of industrial markets â including chemical, mining, oil & gas, power generation, pulp and paper, and general industry.
The following may be symptoms of fecal impaction: 1  Being unable to have a bowel movement. 2  Having to push harder to have a bowel movement of small amounts of hard, dry stool. 3  Having fewer than the usual number of bowel movements.  Having pain in the back or abdomen.
The symptoms of irritable bowel syndrome (IBS), a disorder that affects the large intestine, includes abdominal pain, bloating, gas, diarrhea, and constipation. If you have experienced these symptoms for at least 12 weeks out of the previous 12 months (not necessarily consecutively), you might have the condition.