◆材质：镀锌钢板

◆规格尺寸：W*H配合风管尺寸

◆特性：

1.平时为常开状态，当阀门内温度达到70℃时，易熔片熔断，阀门在弹簧力作用下关闭并输出关闭信号，切断烟气沿风管蔓延，阀门动作后手动复位。

2.阀门平时可做风量调节阀使用，有六档风量调节，可手动开启或关闭。

◆Material: galvanized steel

◆Size: W*H with duct size

◆Characteristic:

1. Normally open state, when the temperature inside the valve reaches 70 °C, the fusible piece is blown, the valve is closed under the action of the spring force and the closing signal is output, the flue gas is cut off along the air duct, and the valve is manually reset after the action.

2. The valve can be used as an air volume control valve in peacetime. There are six air volume adjustments, which can be manually turned on or off.