Leak Detector Smart Valve 1/4" or 3/4"This Leak Detector Smart Valve is used to detect a water leak within a water cooler and shuts down the water supply in order to prevent flooding. The sensor is mounted inside the cartridge area of the cooler. If it detects wetness from a leak, it shuts down the water supply at the control box. The Leak Detector Valve is a valuable tool in helping to prevent damage that can occur in the event that a leak occurs within the water cooler.