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.
Bowel obstruction patients exhibit a number of symptoms. They include: 1  Vomiting. 2  Belly pain and cramping that is on and off. 3  In most case this pain occurs around the belly or below. 4  Bloating. 5  Diarrhea in the event that there is a partial blockage in the intestines. 6  If there is a complete blockage of the intestines, constipation and shortness of gas are the most probable results.