Q41N螺纹式法兰高压球阀它具有旋转90度的动作，旋塞体为球体，有圆形通孔或通道通过其轴线。球阀在管路中主要用来做切断、分配和改变介质的流动方向，它只需要用旋转90度的操作和很小的转动力矩就能关闭严密。球阀适宜做开关、切断阀使用，但近来的发展已将球阀设计成使它具有节流和控制流量之用，如V型球阀。

      Q41N螺纹式法兰高压球阀的法兰由螺纹和阀门主体连接，可以通过螺纹调节达到和管线法兰的连接螺栓对位，2片法兰间密封由透镜垫完成。Q41N螺纹式法兰高压球阀本身结构紧凑，密封度好，结构简单，维修方便，密封面与球面常在闭合状态，不易被介质冲蚀，易于操作和维修，适用于水、溶剂、酸和天然气等一般工作介质，而且还适用于工作条件恶劣的介质，如氧气、过氧化氢、甲烷和乙烯等，在各行业得到广泛的应用。球阀阀体可以是整体的，也可以是组合式的。

      Q41N螺纹式法兰高压球阀优点：

      1．流体阻力小，全通径的球阀基本没有流阻。

      2．结构简单、体积小、重量轻。

      3．紧密度好。它有两个密封面，而且目前球阀的密封面材料广泛使用各种塑料，密封性好，能实现完全密封。在真空系统中也已广泛使用。

      4．操作方便，开闭迅速，从全开到全关只要旋转90°，便于远距离的控制。

      5．维修方便，球阀结构简单，密封圈一般都是活动的，拆卸更换都比较方便。

      6．在全开或全闭时，球体和阀座的密封面与介质隔离，介质通过时，不会引起阀门密封面的侵蚀。

      7．适用范围广，通径从小到几毫米，大到几米，从高真空至高压力都可应用。

      8．由于球阀在启闭过程中有擦拭性，所以可用于带悬浮固体颗粒的介质中。

螺纹法兰式高压球阀

螺纹法兰式高压球阀是一种结合螺纹连接与法兰连接优势的高压阀门，其阀体两端采用法兰结构，法兰与管道的连接通过螺纹方式实现（即法兰内孔加工有螺纹，与管道外螺纹配合紧固），兼具法兰连接的稳定性和螺纹连接的便捷性，适用于高压介质控制场景。

该阀门主要由球体、阀座、带螺纹法兰的阀体、阀杆及密封组件等构成，工作原理为通过阀杆驱动球体旋转90°，实现介质的快速通断：球体通道与管道轴线一致时阀门全开，旋转后通道闭合，阀座与球体的精密贴合确保高压下的密封性能。

螺纹法兰式高压球阀其核心特点包括：1. 连接方式灵活，螺纹与法兰结合的设计既可以能达到连接强度，又简化了安装与拆卸流程，便于维护；2. 采用高强度阀体材料（如304/316不锈钢、A105碳钢等），耐受高压能力强，公称压力通常可达31.5MPa及以上，部分型号可适应超高压工况；3. 密封组件多选用耐磨损、耐高低温的材料（如金属密封或增强聚四氟乙烯），适用温度范围广（一般-40℃~300℃），可满足多种介质（如油气、蒸汽、腐蚀性流体等）的控制需求。

螺纹法兰式高压球阀在应用领域上，螺纹法兰式高压球阀广泛用于石油天然气开采与输送、化工生产、高压液压系统、电力设备及船舶工业等，尤其适用于需要频繁拆装维护或高压管道系统中。

Product Overview of Threaded Flange High-Pressure Ball Valve

The threaded flange high-pressure ball valve is a type of high-pressure valve that combines the advantages of threaded connection flange connection. Both ends of its valve body adopt a flange structure, the connection between the flange the pipeline is realized through a threaded manner (i.e., the flange inner hole is processed with threads, which are fastened with the external threads of the pipeline). It has both the stability of flange connection the convenience of threaded connection, is suitable for high-pressure medium control scenarios.

The valve is mainly composed of components such as a ball, valve seat, valve body with threaded flanges, valve stem, sealing assemblies. Its working principle is to drive the ball to rotate 90° through the valve stem to realize rapid on-off of the medium: when the ball's channel is aligned with the pipeline axis, the valve is fully open; after rotation, the channel is closed, the precise fit between the valve seat the ball ensures sealing performance under high pressure.

Its core features include: 1. Flexible connection mode; the design combining threads flanges only ensures connection strength but also simplifies the installation disassembly process, facilitating maintenance; 2. High-strength valve body materials (such as 304/316 stainless steel, A105 carbon steel, etc.) are used, with strong high-pressure resistance. The nominal pressure can usually reach 31.5MPa higher, some models can adapt to ultra-high pressure working conditions; 3. The sealing components are mostly made of wear-resistant, high low temperature resistant materials (such as metal seals reinforced polytetrafluoroethylene), with a wide applicable temperature range (generally -40℃~300℃), which can meet the control needs of various media (such as oil gas, steam, corrosive fluids, etc.).

In terms of application fields, threaded flange high-pressure ball valves are widely used in oil gas exploration transportation, chemical production, high-pressure hydraulic systems, power equipment, shipbuilding industry, especially suitable for high-pressure pipeline systems that require frequent disassembly, assembly maintenance.