闸阀的启闭件是闸板，闸板的运动方向与流体方向相垂直。阀门依靠阀杆带动闸板做升降运动，从而实现管道的开启与关闭。当闸板完全升起时，阀体内部介质通道呈直线贯通，介质几乎可以无阻碍地流过。这种直通式流道设计赋予闸阀最显著的优势——流动阻力小，流体压力损失极低。在需要保持管道系统压力稳定的场景中，这一特性尤为珍贵。

The opening and closing component of a gate valve is the gate, and the direction of movement of the gate is perpendicular to the direction of the fluid. The valve relies on the stem to drive the gate to move up and down, thereby achieving the opening and closing of the pipeline. When the gate is fully raised, the internal medium channel of the valve body is connected in a straight line, and the medium can flow almost unobstructed. This straight through flow channel design gives gate valves the most significant advantage - low flow resistance and extremely low fluid pressure loss. This feature is particularly valuable in scenarios where it is necessary to maintain stable pressure in pipeline systems.

良工闸阀在产品结构上形成了丰富的技术路线。按闸板形式可分为楔式闸阀和平行式闸阀两大类。楔式闸阀的闸板呈楔形，关闭时依靠楔紧力实现密封，结构简单、密封可靠。平行式双闸板闸阀则采用两片闸板中间带有撑开机构的设计，闸板向阀座的压紧力由介质压力自动控制。良工核二级平行式双闸板闸阀采用了全行程精确导向设计和中腔双重密封结构，闸板全行程运动均有精确导向，确保启闭动作的平稳可靠。

Lianggong gate valve has formed a rich technical route in product structure. According to the form of the gate, it can be divided into two categories: wedge gate valves and parallel gate valves. The gate of the wedge gate valve is wedge-shaped, and when closed, it relies on the clamping force to achieve sealing. The structure is simple and the sealing is reliable. The parallel double gate valve adopts a design with a spreading mechanism in the middle of two gate plates, and the clamping force of the gate plate to the valve seat is automatically controlled by the medium pressure. The Lianggong Nuclear Second Stage Parallel Double Gate Valve adopts a full stroke precise guidance design and a double sealing structure in the middle chamber. The full stroke movement of the gate is precisely guided, ensuring smooth and reliable opening and closing actions.

在工业管道的万千阀门中，闸阀是最为基础也最为常见的品类之一。它如同管道系统的“开关”，承担着切断和接通介质流通的核心任务。良工阀门作为拥有七十余年阀门制造经验的老牌企业，在闸阀领域积累了深厚的技术底蕴，产品覆盖通用工业、核电、石油化工等多个高端领域

Among the thousands of valves in industrial pipelines, gate valves are one of the most basic and common categories. It is like a "switch" in a pipeline system, responsible for the core task of cutting off and connecting the flow of media. As a well-established enterprise with over 70 years of valve manufacturing experience, Lianggong Valve has accumulated profound technical expertise in the field of gate valves, with products covering multiple high-end fields such as general industry, nuclear power, and petrochemicals