They were never used but were left outdoors in the rain, so boxes were damaged by water and cast iron outter part got some oxidation marks. That’s why i am selling them so cheap. It will come with all the parts and manual, bot not in original box. Please see photos for condition System Sensor WFDTN T-Tap Water Flow Detector. · Minimum flow rate: 4 Gallons per minute. · Relay contact type: Form C. · Maximum surge: 18 FT/S. · Switch configuration : SPDT. · 1” NPT Connection.
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