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.
The blockage prevents food, drink, gas and faeces from moving through your bowel. It can have many causes. Common signs of bowel obstruction are abdominal pain (tummy pain), a feeling of swelling and fullness in the abdomen, inability to pass faeces, and nausea and vomiting. Bowel obstruction is a medical emergency that requires immediate medical attention.