Flow switches such as the McDonnell Miller FS4-3 are able to have an optional time delay of either 5 seconds or 20 seconds. This feature does not come standard and will not work without additional parts. To get this feature, you will need to purchase a separate relay in either 24 volt or 120 volt specified for the 5 second delay or the 20 second delay.
Flow switches such and McDonnell Miller flow switches can be found at www.supplyhouse.com
Flow switches such and McDonnell Miller flow switches can be found at www.supplyhouse.com
