LQ21N焊接三通球阀在结构上分为T型和L型2种换向方式。这种阀的原理是以改变管线内的介质流向为目的，实现管道互通。由本厂自主研发生产的【球阀】质量好、价格合理、售后服务完善。『内螺纹三通球阀』适用于各种轻重工业及楼宇管道。LQ21N焊接三通球阀广泛应用于：化工、石化、石油、造纸、采矿、电力、液化气、食品、制药、给排水、市政、机械设备配套、电子工业，城建等领域。

LQ21N焊接三通球阀特点：

  (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）紧密稳定。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。

LQ21N焊接三通球阀技术参数：

  ①公称压力：2.5MPa 4.0MPa 6.4MPa 10.0MPa 16.0MPa 32.0MPa 42.0MPa 50.0MPa 80.0MPa
  ②适用稳定范围：-20～232℃～350℃
  ③适用介质：水、油、气及某些腐蚀性液体（W.O.G）

焊接式三通球阀产品概述

焊接式三通球阀是一种采用焊接连接方式的三通球阀，通过三个端口与管道焊接相连，可实现不同管道间介质的切换或分流、合流，适用于需要改变介质流向的工业管道系统。以下是其产品概述：

 焊接式三通球阀- 结构组成：主要由阀体、球体（带三通流道）、阀座、阀杆、焊接端口及执行机构（手动、气动、电动等）组成。阀体通常为锻造或铸造结构，三个端口均设计为焊接端，可与管道直接焊接；球体为核心部件，内部流道呈T型或L型，用于实现介质的不同流向控制。

焊接式三通球阀- 工作原理：通过旋转阀杆带动球体转动，利用球体内部的三通流道改变介质的流通路径。例如，T型流道可实现三路介质的合流或分流（如一路进、两路出，或两路进、一路出）；L型流道可实现两路介质的换向（如从一路进、另一路出切换为进、出端口互换）。

焊接式三通球阀- 特点优势：焊接连接密封性能好，抗振动、耐高压，适用于高压或腐蚀性工况；三通结构可减少管道连接配件，简化管路设计；操作灵活，通过旋转球体即可快速切换介质流向；流阻小，介质流通顺畅；材质多样（如碳钢、不锈钢等），适配不同介质需求。

焊接式三通球阀- 技术参数：公称通径常见DN15-DN100等规格，公称压力一般为PN16-PN160，适用温度范围根据材质不同约为-20℃至425℃（碳钢）或-196℃至540℃（不锈钢）。

焊接式三通球阀- 应用领域：广泛应用于石油化工、天然气、冶金、电力等行业，用于控制液体、气体、蒸汽等介质的流向切换、分流或合流。

 The welded three-way ball valve is a type of three-way ball valve with welded connection. It is connected to pipelines through three ports by welding, can realize medium switching, splitting combining between different pipelines, suitable for industrial pipeline systems that need to change the direction of medium flow. The product overview is as follows:

 The welded three-way ball- Structural composition: It mainly consists of a valve body, a ball (with three-way flow channel), a valve seat, a valve stem, welded ports an actuator (manual, pneumatic, electric, etc.). The valve body is usually of forged cast structure, with three ports designed as welded ends, which can be directly welded to the pipeline; the ball is the core component, with a T-shaped L-shaped internal flow channel, used to control the different flow directions of the medium.

The welded three-way ball- Working principle: The valve stem is rotated to drive the ball to rotate, the three-way flow channel inside the ball is used to change the flow path of the medium. For example, the T-shaped flow channel can realize the confluence splitting of three-way media (such as one inlet two outlets, two inlets one outlet); the L-shaped flow channel can realize the commutation of two-way media (such as switching one inlet another outlet to the interchange of inlet outlet ports).

The welded three-way ball- Features advantages: The welded connection has good sealing performance, anti-vibration high pressure resistance, suitable for high-pressure corrosive working conditions; the three-way structure can reduce pipeline connection accessories simplify pipeline design; it is flexible in operation, the medium flow direction can be quickly switched by rotating the ball; it has low flow resistance smooth medium circulation; various materials (such as carbon steel, stainless steel, etc.) are available to meet different medium requirements.

The welded three-way ball- Technical parameters: The nominal diameter commonly includes specifications such as DN15-DN100; the nominal pressure is generally PN16-PN160; the applicable temperature range varies by material, approximately -20℃ to 425℃ (carbon steel) -196℃ to 540℃ (stainless steel).

The welded three-way ball- Application fields: Widely used in petrochemical, natural gas, metallurgy, electric power other industries, for controlling the flow direction switching, splitting combining of media such as liquids, gases steam.