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.
Older people may develop constipation and fecal impaction due to reduced mobility and weak abdominal muscles. Some people may also be forced to hold their stool in for long periods of time because caregivers don't take them to the bathroom regularly. You are at greater risk for fecal impaction if you: 1  Don't drink enough fluids.  Have a low-fiber diet.