◆材质：镀锌钢板

◆规格尺寸：Ø配合风管尺寸

◆特性：

1.自动机械动态平衡，无需外部动力，它依靠风管内气流力来定位控制阀门叶片的位置，从而在整个压力差范围内将气流保持在预先设定的流量上。

2.适用于需要定风量的通风空调系统上，直接与圆形风管连接，外部指针显示流量刻度。

◆Material: galvanized steel

◆Size: Ø with duct size

◆Characteristic:

1. Automated mechanical dynamic balance, without external power, it relies on the airflow force in the duct to position the control valve vanes to maintain the airflow at a preset flow rate over the entire pressure differential range.

2. Applicable to ventilation and air conditioning systems that require constant air volume, directly connected to the circular duct, and the external pointer displays the flow scale.