... 2.Size: 4", 5",6", 8" 3.Type: Wet pilot 4. OEM and ODM available fire ... alarm valve is a kind of lever-type structure with anti-reset function, it is ... deluge alarm valve is widely used for various type of dry type system(system side pipenet fits open sprinklers), ... such as deluge alarm system, water curtain system and water mist system.Model ...