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.
Fecal impaction is another side effect of constipation that occurs when the stool becomes impacted in the bowels, to the point that your body is unable to eliminate the collected waste. Symptoms of fecal impaction include abdominal pain (especially after meals), headache, nausea and vomiting just to name a few.