三片式对焊球阀

       Q61S三片式对焊球阀它具有旋转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。

       Q61S三片式对焊球阀是由1个主体和2个副体组成的，通过加强型双头螺栓连接而成。本身结构合理，密封稳定，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。

       Q61S三片式对焊球阀优点：

       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。

三片式对焊球阀

三片式对焊球阀是一种通过球体旋转来控制流体通断，采用对焊连接方式的阀门，在工业管道系统中应用广泛 。三片式对焊球阀- 结构特点：阀体由主阀体和两个副阀体组成，球体通常由两个半球形零件和一个圆盘状零件构成。这种结构使得阀门全通径，流体阻力小，且拆卸维修方便。主要零件包括阀体、球体、阀杆、阀座等，常用材质有铸钢、不锈钢等，密封圈材质多为聚四氟乙烯等。

三片式对焊球阀- 工作原理：球体绕阀体中心线旋转，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。

三片式对焊球阀- 性能优势：具有流体阻力小、结构简单紧凑、体积小重量轻的特点。密封性能好，阀座密封圈采用弹性材料，密封能力随介质压力而增大。操作方便，开闭迅速，只需旋转90°，且便于远程控制。阀杆密封稳定，因其只做旋转运动，填料密封不易破坏。此外，还具有防静电功能，通过在球体、阀杆、阀体之间设置弹簧，可导出开关过程中产生的静电。

三片式对焊球阀- 适用范围：公称通径一般为DN15-DN300，适用介质包括蒸汽、水、油品、硝酸类、醋酸类等。适用温度范围通常在-28℃-300℃，能在高真空至高压力等多种工况下使用，广泛应用于石油、化工、制药、冶金等行业的管道控制系统。

The three - piece butt - weld ball valve is a kind of valve that controls the on - off of fluid by the rotation of the ball adopts the butt - weld connection mode, which is widely used in industrial pipeline systems. The product overview is as follows:

- Structural features: The valve body is composed of a main valve body two sub - valve bodies, the ball is usually composed of two hemispherical parts a disc - shaped part. This structure makes the valve full - bore, with small fluid resistance, easy to disassemble maintain. The main parts include the valve body, ball, valve stem, valve seat, etc. The commonly used materials are cast steel, stainless steel, etc., the sealing ring material is mostly polytetrafluoroethylene, etc.

- Working principle: The ball rotates around the central line of the valve body. 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 characteristics of small fluid resistance, simple compact structure, small volume light weight. The sealing performance is good. The valve seat sealing ring is made of elastic materials, the sealing ability increases with the increase of the medium pressure. It is easy to operate, the opening closing are rapid, only requiring a 90 ° rotation, it is convenient for remote control. The valve stem sealing is reliable, because it only makes a rotating motion, the packing seal is easy to be damaged. In addition, it also has an anti - static function. By setting a spring between the ball, valve stem valve body, the static electricity generated during the switching process can be led out.

- Scope of application: The nominal diameter is generally DN15 - DN300, the applicable media include steam, water, oil products, nitric acid, acetic acid, etc. The applicable temperature range is usually between - 28℃ 300℃, it can be used in a variety of working conditions high vacuum to high pressure. It is widely used in the pipeline control systems of industries such as petroleum, chemical industry, pharmaceutical, metallurgy.

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