Ames M300N-OSY-GPM 8" SS Double Check Detector Assembly

Ames M300 N pattern double check detector backflow preventer assembly is designed to prevent the reverse flow of fire protection substances and water of non-potable quality from being pumped or siphoned into the potable water supply due to backsiphonage and or backpressure. The assembly has a stainless steel body, tri-link check valves, outside stem and yoke resilient seated gate valves, and four test cocks. It comes furnished with a gallon per minute meter to detect underground leaks and unauthorized water use.