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.
1 Fecal impaction is a large mass of dry hard stool that gets stuck in the rectum-it is literally so hard that it cannot come out. 2  Rectal cancer-tumors that develop within the rectum can cause bowel incontinence. 3  Rectal prolapse-if the rectum drops down into the anus, bowel incontinence can occur.