Automatic air vent for fire suppression wet pipe system and method of venting a fire suppression wet pipe system

摘要

A fire suppression wet pipe system air vent assembly and method of venting air from a fire suppression wet pipe system includes providing a primary air vent valve having an inlet and an outlet. The primary air vent inlet is adapted to be connected with a fire suppression wet pipe system and is configured to vent air, but not water, from its outlet. A secondary air vent valve having an inlet and an outlet is provided. The secondary air vent valve is configured to vent air, but not water, from its outlet. A fluid conduit connects the primary air vent valve outlet with the secondary air vent valve inlet. The second air vent valve provides failsafe air venting upon the failure of the primary air vent valve. A fluid indicator may be provided that indicates the presence of fluid in the conduit. The presence of an appreciable amount of fluid in the conduit is an indication of likely failure of the primary air vent valve.