Description

The AGF PURGEnVENT Model 7900AAV Automatic Air Venting Valve is designed to remove excess air from wet pipe fire sprinkler systems to help mitigate internal pipe corrosion. NFPA 13 standard requires the addition of an air vent on all wet pipe fire sprinkler systems that utilize metallic pipe. The PURGEnVENT Model 7900AAV features a FM approved and UL listed 7900V automatic air vent that releases excess air while the system is in operation. It also includes an isolation valve, strainer, and purge valve with union and hose connection. The purge valve helps remove air from the system faster when filling, helps flush and clean the valve, and can be used as a vacuum break when draining the system. When being used as a vacuum break it helps drain the system faster and protects gaskets from being dislodged on other system components. AGF recommends installing the valve at the highest point in the system or at the end of system branch lines.