1.Technical specification

2.Design features 设计特点

1. Valve stem head design of double D type: ensure that the handle is installed correctly, the handle is always consistent with the flow direction, indicate the switch position, and prevent blowing out.

双 D 型阀杆头设计：确保手柄安装正确，手柄始终与流向一致，指示开关位置，防止吹出。

2. Valve stem design: The bottom of the valve stem is designed as a T‑shaped structure and an integral boss on the valve body to ensure that the valve stem is not blown out by pressure.

阀杆设计：阀杆底部设计为 T 型结构，阀体上有整体式凸台，保证阀杆不被压力吹出。

3. ISO5211 connection size: international standard connection size is adopted to simplify the installation and execution structure.

ISO5211 连接尺寸：采用国际标准连接尺寸，简化安装执行结构。

4. Fireproof design: after the non‑metallic sealing material is damaged by fire, it can realize metal‑to‑metal sealing to cut off the valve fluid.

防火设计：非金属密封材料被火灾破坏后，可实现金属对金属的密封，切断阀门流体。

5. Leak‑proof gasket: use low‑leakage graphite gasket to avoid leakage.

低泄漏填料：采用低泄漏石墨垫片，防止泄漏。

3.Technical Details