WJ41W波纹管法兰截止阀适用于公称压力PN1.6～16MPa，工作温度-29～350℃的易燃、易爆、剧毒、毒性流体、高温导热油、液氨等介质。广泛应用于：石油化工、化纤纺织、塑料造纸、电力钢铁、印染橡胶、天然气等其它气体系统中，性能安全稳定，波纹管截止阀广泛应用于乙二醇等工业流体。驱动方式有手动、齿轮传动、电动、气动等。

结构特点:

       1、产品结构合理、密封稳定，双重坚固耐用的波纹管密封设计（波纹管+填料），保持阀杆的零泄漏。没有流体损失，提高工厂设备安全。并符合密封标准。
       2、密封面堆焊Co基硬质合金、耐磨、耐腐、抗摩擦性能好、使用寿命长
       3、阀杆调质及表面氮化处理，有良好的抗腐和抗摩擦性能；阀杆升降位置指示，更直观.

波纹管法兰截止阀技术规范:

波纹管法兰截止阀产品性能规范:

注：系列阀门连接法兰可根据用户要求设计制造

波纹管法兰截止阀零件材料:

波纹管法兰截止阀

波纹管法兰截止阀是一种高性能的截止阀，其核心特征是在阀杆密封系统处采用了金属波纹管（Bellows）密封与填料密封相结合的双重密封结构。它专门设计用于处理有毒、有害、易燃易爆、贵重或高真空度等要求“零外泄漏”的苛刻介质，是保障工业装置安全运行和环境保护的关键设备。

波纹管法兰截止阀核心设计特点和关键技术包括：

波纹管密封组件 (Bellows Seal Assembly): 这是该阀门的核心。金属波纹管的一端焊接在阀杆上，另一端固定在阀体或阀盖上。当阀门开启或关闭时，阀杆的升降运动被波纹管的弹性伸缩所吸收，使介质与阀杆填料完全隔离，实现了稳定的动密封，从根本上杜绝了通过阀杆的外部泄漏。

波纹管法兰截止阀双重密封保障 (Dual Sealing Assurance):

主密封 (Primary Seal): 金属波纹管作为主密封，承担了所有工况下的密封责任，寿命长，稳定性极高。

次级密封 (Secondary Seal): 传统的石墨填料函作为次级密封。即使在极少数情况下波纹管失效，填料函仍能提供足够的密封能力，起到安全备份的作用，实现了双重保险。

法兰连接 (Flanged Connection): 阀体两端带有标准法兰，通过螺栓与管道连接。这种连接方式结构坚固、密封稳定、可承受高压力和高温度，便于阀门的安装和维护，是工业管道系统的标准连接形式。

安全性设计 (Safety Design): 波纹管组件通常设计为“活载”结构，或带有指示器，可在波纹管万一发生破裂时提供视觉警示，提醒及时维护，防止安全事故发生。

波纹管法兰截止阀应用领域:

广泛应用于石油化工、精细化工、核电、制药、半导体、液化天然气（LNG）以及任何涉及剧毒、易挥发、放射性或稀有贵重介质的管道系统中。

波纹管法兰截止阀核心价值:

提供了业界高等级的阀杆密封解决方案，彻底消除了过程介质通过阀杆向外泄漏的风险，高限度地提高工艺安全性、保护环境、防止产品损失和保障人员健康。

Product Name: Bellows Seal Flanged Globe Valve

Product Overview:

The Bellows Seal Flanged Globe Valve is a high-performance globe valve whose core feature is a dual sealing structure that combines a metal bellows seal with a stuffing box (packing) seal at the stem sealing system. It is specifically designed to handle苛刻 media such as toxic, hazardous, flammable, explosive, precious, high-vacuum substances that require "zero external leakage." It is a critical component for ensuring the safe operation of industrial plants environmental protection.

Its core design features key technologies include:

Bellows Seal Assembly: This is the heart of the valve. The metal bellows is welded to the stem at one end fixed to the valve body bonnet at the other. The ascending descending motion of the stem during valve operation is absorbed by the elastic expansion contraction of the bellows. This completely isolates the medium the stem packing, achieving an absolutely reliable dynamic seal fundamentally eliminating external leakage along the stem.

Dual Sealing Assurance:

Primary Seal: The metal bellows acts as the primary seal, bearing the sealing responsibility under all operating conditions. It offers long service life extremely high reliability.

Secondary Seal: The traditional graphite packing serves as the secondary seal. Even in the rare event of bellows failure, the packing can provide sufficient sealing capacity, acting as a safety backup providing dual protection.

Flanged Connection: The valve body has standard flanges at both ends, which are connected to the pipeline via bolts. This connection method offers a robust structure, reliable sealing, the ability to withstand high pressure temperature. It facilitates easy installation maintenance, making it a standard reliable connection form for industrial piping systems.

Safety Design: The bellows assembly is often designed as a "live-loaded" system equipped with an indicator. This can provide a visual warning in the unlikely event of bellows failure, prompting timely maintenance preventing safety incidents.

Applications:

Widely used in petrochemical, fine chemical, nuclear power, pharmaceutical, semiconductor, LNG (liquefied natural gas) industries, any piping system handling highly toxic, volatile, radioactive, rare precious media.

Core Value:

It provides the highest level of stem sealing solution in the industry,彻底 eliminating the risk of process media leaking to the atmosphere through the stem. It maximizes process safety, protects the environment, prevents product loss, safeguards personnel health.

波纹管法兰截止阀: Bellows Seal Flanged Globe Valve

金属波纹管: Metal Bellows

阀杆密封: Stem Seal

零外泄漏: Zero External Leakage / Emissions

双重密封: Dual Seal

填料密封: Packing Seal / Stuffing Box

动密封: Dynamic Seal

法兰连接: Flanged Connection

有毒/有害介质: Toxic / Hazardous Media

易燃易爆介质: Flammable / Explosive Media

高真空: High Vacuum

安全性: Safety