双卡套球阀

双卡套球阀是一种采用双卡套连接方式的高精度阀门，主要用于中小口径、高压及对密封性能要求严苛的管路系统中，通过旋转球体实现介质的快速通断控制。其核心连接结构由前后卡套（前卡套呈锥形，后卡套为圆柱形）组成，安装时无需焊接或螺纹紧固，仅通过螺母压紧卡套，使前卡套嵌入管道外壁形成机械密封，后卡套则辅助固定并增强密封稳定性，兼具连接牢固性与密封稳定性。

双卡套球阀主要由球体、阀座、阀体、双卡套接头组件、阀杆及操作手柄等构成，工作原理与常规球阀一致：手柄驱动球体旋转90°，球体通道与管路对齐时阀门全开，旋转至垂直状态时，球体与阀座紧密贴合实现截断，阀座多采用聚四氟乙烯或金属材料，适配水、气、油及腐蚀性流体等多种介质。

双卡套球阀其优势包括：1. 安装便捷，无需专业焊接设备，可快速拆装，便于管路维护与更换；2. 密封性能好，双卡套结构通过机械变形形成双重密封，能有效耐受高压（公称压力通常可达31.5MPa以上），且抗振动、防泄漏能力强；3. 流通阻力小，直通式流道设计减少介质压力损失；4. 阀体材质多选用304/316不锈钢等耐腐蚀材料，适配温度范围广（一般-20℃~200℃），适用于洁净流体或高精度工业场景。

双卡套球阀在应用领域上，双卡套球阀广泛用于仪器仪表管路、液压系统、实验室设备、医药化工及半导体制造等行业，尤其适合高压、洁净或需要频繁拆装的管路系统。

 Product Overview of Double Ferrule Ball Valve

The double ferrule ball valve is a high-precision valve using a double ferrule connection, mainly applied in small to medium-diameter, high-pressure pipeline systems with strict sealing requirements. It controls the rapid on-off of media by rotating the ball. Its core connection structure consists of front rear ferrules (the front ferrule is conical, the rear one is cylindrical). During installation, no welding thread fastening is needed; the ferrules are compressed only by a nut, making the front ferrule embed into the outer wall of the pipeline to form a mechanical seal, while the rear ferrule assists in fixing enhancing sealing stability, combining firm connection reliable sealing.

The valve is mainly composed of components such as a ball, valve seat, valve body, double ferrule fitting assembly, valve stem, operating handle. Its working principle is consistent with conventional ball valves: the handle drives the ball to rotate 90°; when the ball's channel aligns with the pipeline, the valve is fully open; when rotated to a vertical state, the ball fits tightly with the valve seat to achieve shut-off. The valve seat is mostly made of polytetrafluoroethylene metal materials, suitable for various media such as water, gas, oil, corrosive fluids. Its notable advantages include: 1. Easy installation, no professional welding equipment required, enabling quick disassembly assembly for convenient pipeline maintenance replacement; 2. Excellent sealing performance, the double ferrule structure forms a double seal through mechanical deformation, which can effectively withstand high pressure (nominal pressure usually up to 31.5MPa higher) with strong anti-vibration anti-leakage capabilities; 3. Low flow resistance, the straight-through flow channel design reduces medium pressure loss; 4. The valve body is mostly made of corrosion-resistant materials such as 304/316 stainless steel, with a wide applicable temperature range (generally -20℃~200℃), suitable for clean fluids high-precision industrial scenarios.