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.
Common side effects. The more common side effects of Macrobid can include: nausea ; vomiting; headache; gas; diarrhea; constipation; Serious side effects. In some cases, Macrobid can cause serious side effects. These can include: Serious allergic reaction. Symptoms can include: hives or rash; trouble breathing or swallowing; swelling of your lips, tongue, or face