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.
Occasionally, long-term constipation develops into fecal impaction, which is a blocked colon from a mass of stool that can't be moved by colon contractions. Fecal impaction can cause pain and vomiting, and a person with fecal impaction may require emergency treatment or hospitalization. Fecal impaction is a fairly common complication of long-term constipation in the elderly and bedridden, occurring in about 30% of all nursing home residents. Symptoms. Symptoms of constipation include: 1  Fewer than three bowel movements per week. 2  Small, hard, dry stools that are difficult or painful to pass. 3  The need to strain excessively to have a bowel movement. 4  A feeling that your rectum is not empty after a bowel movement. 5  Frequent use of enemas, laxatives or suppositories.