Fire proof valve

Name：Fire proof valve
Characteristic：Made of stainless steel;Applies:exhaust valve generally installed on the exhaust system of duct,normally closed,at ordinary times during smoke detector signal fire,fire control center to quickly open the valve on electromagnet through electrical signals the valve,but person also quickly open the valve manually to smoke。Performance:manual can make the valve opened,the manual reset。 Open valve action after the output Signal。