Q12N内外螺纹球阀它具有旋转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。

       Q12N内外螺纹球阀的主体和附件都是锻造后再精加工。可以做硬密封也可以做软密封。硬密封耐压42MPa,耐温630℃，软密封可以根据用户需要做成耐温80℃ 150℃和250℃，耐压高可以到200MPa。Q12N内外螺纹球阀本身结构紧凑，密封稳定，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。

       Q12N内外螺纹球阀优点：

       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。

内外螺纹高压球阀

内外螺纹高压球阀是一种通过螺纹连接管道，适用于高压工况的阀门，可用于控制流体的通断与流量。

内外螺纹高压球阀- 结构特点 ：主要由阀体、阀盖、球体、阀座、阀杆等部件组成。阀体常采用锻造工艺制成，材质多为不锈钢等，强度高、耐压性好。球体通常为全通道设计，流体阻力小。阀座密封件一般采用聚四氟乙烯等弹性材料，密封性能佳。

内外螺纹高压球阀- 工作原理 ：通过旋转阀杆带动球体转动。当球体上的通孔与管道通道对齐时，阀门开启，介质可顺利通过；球体旋转90°后，通孔与通道错开，阀门关闭，截断介质流动。

内外螺纹高压球阀- 性能优势 ：具有耐压能力强的特点，能承受较高压力。密封稳定，球体与阀座间的密封结构可有效防止介质泄漏。操作简便，开闭迅速，便于远程控制。耐腐蚀，选用不锈钢等材质，可适用于多种腐蚀性介质。结构紧凑，体积小、重量轻，适合不同安装环境。

内外螺纹高压球阀- 适用范围 ：广泛应用于石油、化工、电力、冶金等行业的高压管道系统。适用介质包括液压油、水、高压气体、蒸汽、腐蚀性介质等。公称通径通常有多种规格，工作温度范围因材质和密封件而异，一般可在-46℃至425℃之间，公称压力可达PN16至PN320左右。

The internal - external thread high - pressure ball valve is a kind of valve that connects pipelines through threads  is suitable for high - pressure working conditions. It can be used to control the on - off  flow of fluids. The product overview is as follows:

 Structural features : It is mainly composed of components such as the valve body, valve cover, ball, valve seat,  valve stem. The valve body is often made by forging process,  the material is mostly stainless steel, etc., which has high strength  good pressure - resistance. The ball is usually designed with a full - channel,  the fluid resistance is small. The valve seat seal is generally made of elastic materials such as polytetrafluoroethylene, with good sealing performance.

- Working principle : The ball is driven to rotate by turning the valve stem. When the through - hole on the ball is aligned with the pipeline channel, the valve is opened,  the medium can pass through smoothly. After the ball rotates 90 °, the through hole is staggered  the channel,  the valve is closed to cut off the flow of the medium.

Performance advantages : It has the characteristic of strong pressure - bearing capacity  can withstand high pressure. The sealing is reliable,  the sealing structure between the ball  the valve seat can effectively prevent the leakage of the medium. It is easy to operate,  the opening  closing are rapid, which is convenient for remote control. It is corrosion - resistant. Using stainless steel  other materials, it can be suitable for a variety of corrosive media. The structure is compact, with a small volume  light weight, suitable for different installation environments.

Scope of application : It is widely used in the high - pressure pipeline systems of industries such as petroleum, chemical industry, electric power,  metallurgy. The applicable media include hydraulic oil, water, high - pressure gas, steam, corrosive media, etc. The nominal diameter usually has a variety of specifications. The working temperature range varies according to the material  seal, generally between - 46℃  425℃,  the nominal pressure can reach about PN16 - PN320.