FEBCO 860 In-Line Reduced Pressure Zone Assembly w/ Ball Valves 1 in. with Flood Sensing Capability (Sensing Upgrade Kit Sold Separately). The FEBCO 860 In-Line Reduced Pressure Zone Assembly is a reliable and efficient backflow preventer designed to safeguard your water supply. Crafted with a durable bronze body, this 1-inch assembly ensures long-lasting performance. With its ball valves and flood sensing capability, it offers enhanced control and protection against potential water damage. The pressure rating of 175 PSI guarantees optimal performance in various applications. Manufactured by Watts, a trusted name in the industry, this small series 860 assembly is part of the renowned FEBCO sub-brand. Trust in its reduced pressure zone design to keep your water supply safe and secure.