Vapor Pipe Shield is a Patented and UL Listed innovative solution for the prevention of corrosion in Dry-Pipe & Pre-Action Fire Sprinkler Systems. Vapor Pipe Shield is a delivery system of Vapor phase Corrosion Inhibitor (VpCI®), a technology backed by over forty years of established science. Vapor Pipe Shield is fully mechanical with no electrical connections and simply piped directly in-line between the air compressor and the dry pipe valve. Vapor Pipe Shield is as easy to install as an Air Maintenance Device, is easily maintained, and makes corrosion mitigation in any dry or pre-action fire sprinkler system simple, efficient, and highly cost-effective.