高压针型阀

       产品名称：高压针型阀 

     产品型号：NH-SS-MTS16-9-G

     工作压力：3000PSI~6000PSI(413bar),高可达10000PSI(689bar)
     工作温度：
     PTFE填料：-38oC 至 180oC (-100oF 至 356oF)
     PPL 填料：-38oC 至 280oC (-100oF 至 536oF)
     石墨填料：-24oC 至 480oC (-75oF 至 896oF)
     连接端口:承插焊 内螺纹

     适用介质：火力发电厂的一气门二次门蒸汽等高压高温管路及化工高温管路中上作为启闭机构。

世伟洛克针阀优点：

     1、两截阀杆设计，上阀杆螺纹淡化工艺处理

     2、下阀杆表经经滚压硬化处理上阀杆螺纹的润滑脂与系统介质隔离

     3、无旋转的下阀杆垂直运动代替旋转升降，减少阀杆行程对填料的磨擦，手感更轻便

     4、阀门在全开位置具有背密封功能

     5、可选面板安装

     6、可安装手柄或者手轮操作，稳固耐用多种颜色手柄可供选择

     7、每只阀门在出厂前均按设计压力的1.1倍进行氮气密封测试,并按额定工作压力的1.5倍水压进行壳体强度测试

高压针型阀

高压针型阀- 基本结构：阀芯末端呈尖锥形，借由旋转阀杆来调控阀芯与阀座间的间隙，进而控制流量。高压环境下需严格密封，常配置高品质密封件及金属备份环等，部分阀杆顶部不旋转，以降低磨损 。

高压针型阀- 性能特点：能承受高压，像威卡 HPNV 型高压针型阀，公称压力可达 15,000 至 60,000 psi（103.4 至 413.6 MPa） 。密封性佳，泄漏测试常契合 BS6755/ISO 5208 泄漏率 A 级要求 。即便在高压下，也可凭借低扭矩平稳运转 。

高压针型阀- 连接方式：包含螺纹、法兰、卡套、对焊等，常见 NPT 或 BSP 外螺纹连接，适合小口径高压管路 。

高压针型阀- 适用范围 ：多用于石油、化工、机械自动化领域，常应用于进样系统、测试台、液压动力装置、泄压保护装置及高压水切割、清洗等需精准控流的高压场景。

高压针型阀- 材质：依据介质特性选定，耐蚀场景多用 316L 不锈钢等合金材料。

High Pressure Needle Valve

High Pressure Needle Valve- Basic Structure: The end of the valve core is tapered. The gap between the valve core  the valve seat is adjusted by rotating the valve stem to control the flow rate. Strict sealing is required under high-pressure conditions,  high-quality seals  metal backup rings are often equipped. The tip of some valve stems does  rotate to reduce wear.

High Pressure Needle Valve- Performance Features: It can withstand high pressure. For example, WIKA HPNV type high-pressure needle valves have a nominal pressure ranging  15,000 to 60,000 psi (103.4 to 413.6 MPa). It has excellent sealing performance,  the leakage test often meets the BS6755/ISO 5208 leakage rate Class A requirements. Even under high pressure, it can operate smoothly with low torque.

High Pressure Needle Valve- Connection Methods: Including thread, flange, ferrule, butt welding, etc. Common external thread connections are NPT  BSP, which are suitable for small-diameter high-pressure pipelines.

High Pressure Needle Valve- Application Scope: It is mostly used in petroleum, chemical industry,  mechanical automation fields,  is often applied in high-pressure scenarios requiring precise flow control such as sampling systems, test benches, hydraulic power units, pressure relief protection devices,  high-pressure water cutting  cleaning.

High Pressure Needle Valve- Material: Selected according to the characteristics of the medium. For corrosion-resistant scenarios, high-quality alloy materials such as 316L stainless steel are often used.

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