Recirculation valve
Access to the diaphragm of the recirculation valve is provided through the lower opening of the valve.
1. Check the diaphragm travel by pressing with your finger. The diaphragm should slide fully into the valve body with little force.
2. If in doubt, compare the stroke of the diaphragm of the old and new valves.
3. If there is resistance to diaphragm movement, replace the valve.