Inspect for cold air returns (proper air circulation to prevent moisture build up within the basement, and if there is a sump pump present in the home with a back up battery system, it is important to have proper air circulation as the batteries give off a carbon monoxide and this would set off the smoke detectors, with high carbon monoxide readings, which would call in the fire department. It may also prevent the possible growth of mould).
Inspection of interior valve O rings, and replace if necessary, to ensure a proper seal for the valve door
Inspect floats, if floats need to be replaced, it would mean the door requires replacement (additional cost)
Flush the valve and clean completely, then flush test (same test a city inspector would do) to ensure the door is not flapping as the water goes thru it, or the valve will not work properly. Ensure valve cap and seal are sealed properly to ensure that the valve will function
Ensure there is a refuse hose that runs 6-8 feet away from the house to ensure that it doesn’t run back into the sump pump zone or into the weeping tile. If there is a sump pump present in the home with a backup battery system, it is important to have proper air circulation as the batteries set off the smoke detectors with a carbon monoxide readings and in turn contact the fire department