A valve in automatic sprinkler systems, which automatically operates an alarm; sometimes a loud gong, and sometimes a signal directly to the fire department. This is an alarm valve. It operates if and when a sprinkler head has opened.
Alarm Valve
A valve in automatic sprinkler systems, which automatically operates an alarm; sometimes a loud gong, and sometimes a signal directly to the fire department. This is an alarm valve. It operates if and when a sprinkler head has opened.