This gate valve is designed and manufactured strictly in accordance with API 600 and ASME B16.34 American standards. It adopts integral WCB carbon steel casting body with Outside Screw & Yoke (OS&Y) rising stem structure. The visible lifting stem can directly reflect the opening percentage of the valve. Equipped with wedge metal hard seal structure, it achieves reliable zero leakage under high-pressure working conditions, matched with handwheel manual driving to realize full opening and full closing isolation of pipeline media.