高压法兰截止阀

高压法兰截止阀

高压法兰截止阀

高压法兰截止阀是一种专门设计用于承受高压工况的法兰连接截止阀。它采用加强的结构设计、特殊材质密封形式，确保在高温高压条件下能够稳定地切断流体，是石油、化工、电力等行业关键装置中的必备阀门。

高压法兰截止阀核心特点：

高压承载设计：阀体通常采用锻钢制造，壁厚加厚，结构坚固，能承受极高的管道压力（如Class 600、900、1500、2500LB甚至更高）。

高压法兰截止阀法兰连接：阀体两端带有高强度法兰，通过螺栓与管道法兰紧密连接。这种连接方式强度和密封性，是高压管道连接形式。

高压法兰截止阀密封副：阀瓣和阀座密封面通常堆焊或镶嵌硬质合金（如司太立Stellite），具有极高的耐磨性、抗冲刷性和耐高温性，确保在高压差下仍能实现紧密密封。

加粗阀杆与特殊填料：阀杆直径加粗以承受更高的介质力，填料函通常采用多重柔性石墨环或组合式填料，并配有碟形弹簧自动补偿，确保阀杆处密封稳定，实现零外泄漏。

操作力距大：由于高压下介质作用力大，通常配备齿轮箱、电动或气动执行器以方便启闭操作。

高压法兰截止阀主要应用领域：

石油化工装置的高压工艺管道

火力发电厂的高压给水系统、蒸汽系统

合成氨、尿素等化肥生产设备

高压油气田的采输设备

产品名称：

中文： 高压法兰截止阀

英文： High Pressure Flanged Globe Valve

High Pressure Flanged Globe Valve

A High Pressure Flanged Globe Valve is a type of globe valve specifically engineered to withstand severe high-pressure conditions. It features a reinforced structure, special materials, advanced sealing technology to ensure reliable shut-off of fluid flow under high pressure temperature. It is an essential component in critical applications within the petroleum, chemical, power generation industries.

Key Features:

High-Pressure Design: The body is typically forged high-quality carbon steel alloy steel, with increased wall thickness a robust structure to withstand very high pipeline pressures (e.g., Class 600, 900, 1500, 2500, above).

Flanged Connection: Features high-strength flanged ends that are bolted to the pipeline flanges. This connection type offers superior strength sealing integrity, making it the preferred choice for high-pressure piping.

Advanced Trim: The disc seat ring are often hard-faced with wear-resistant alloys (e.g., Stellite) to provide exceptional resistance to erosion, abrasion, high temperatures, ensuring bubble-tight shut-off even under high pressure differentials.

Reinforced Stem & Special Packing: The stem is oversized to withstand high mechanical loads. The stuffing box is typically equipped with multiple rings of flexible graphite combination packing, often with Belleville spring washers for automatic compression, guaranteeing reliable stem sealing zero fugitive emissions.

High Torque Operation: Due to high fluid forces, these valves are commonly equipped with gear operators, electric, pneumatic actuators to facilitate opening closing.

Primary Applications:

High-pressure process piping in petrochemical plants

High-pressure feedwater steam systems in thermal power plants

Fertilizer production plants (e.g., synthetic ammonia, urea)

Production transportation equipment in high-pressure oil gas fields

关键术语：

锻钢: Forged Steel

压力等级: Pressure Class (e.g., Class 1500)

硬质合金密封: Hard-faced Trim / Hard Seal

司太立合金: Stellite

填料函: Stuffing Box

柔性石墨: Flexible Graphite

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