4ALF-20A-03 | 4" OS&Y FLG BLACKFLOW PREVENT | Conbraco Industries

4ALF-20A-03 Blackflow Prevention Valve by Conbraco Industries The Conbraco 4ALF-20A-03 Fire Safety Valve is designed to prevent the flow of water in an open system and protect against backflow when connected to a fire sprinkler system. This valve comes in a black finish, and features a resilient seat. It has a solder end connection and is perfect for a variety of applications. Our HVAC supply store also offers Same Day Shipping on this valve, so order today!