内外螺纹式两阀组

产品名称：直接安装内外螺纹式两阀组

产品型号：DTCT3

所属类别：仪表阀组 >> 两阀组

所属系列：DT

内外螺纹式两阀组安装尺寸图

内外螺纹式两阀组

内外螺纹式两阀组是一种集成式过程控制阀组，由两个独立的截止阀（通常是球阀或针阀）共同安装在一个阀体块上构成。其明显特征是阀组的两个接口端采用不同的螺纹标准：一端为外螺纹（通常为阳螺纹），另一端为内螺纹（通常为阴螺纹），这种设计便于连接不同接口的管道或仪表设备。

内外螺纹式两阀组主要功能与用途

该阀组主要用于压力变送器、差压变送器、压力表或其他过程仪表的引压管路上。其核心功能是实现仪表的隔离、校准、泄压和排污。

隔离 (Isolation)：两个阀门可以分别关闭，将仪表与过程介质完全隔离，以便进行维护或更换。

校准 (Calibration)：在隔离状态下，允许技术人员在不中断过程的情况下，对仪表进行在线校准或调试。

泄压/排污 (Venting/Draining)：通过阀体上的公共泄放孔（通常位于两个阀芯之间），可以安全地释放压力或排放腔体内的介质，确保操作安全。

内外螺纹式两阀组主要特点

连接便利：内外螺纹设计提供了灵活的连接方式，简化了安装，减少了所需接头数量。

结构紧凑：一体化阀块设计，节省空间，安装更整洁。

密封稳定：通常采用好的密封材料（如PTFE、石墨、金属垫片），确保在高压和苛刻介质下的密封性。

效率安全：集成泄放功能，使维护和调试工作更安全、更有效。

耐用性强：阀体和关键部件常由不锈钢（如304SS, 316SS）、碳钢等坚固材料制造，耐腐蚀和耐高压。

内外螺纹式两阀组典型应用行业

广泛应用于石油、天然气、化工、制药、电力、水处理等工业过程控制与测量领域。

Internal & External Thread Two-Valve Manifold Product Overview

Product Definition

An internal & external thread two-valve manifold is an integrated process control manifold assembly. It consists of two independent shut-off valves (typically ball valves  needle valves) mounted onto a common valve body block. Its distinctive feature is that the two connection ends of the manifold employ different thread standards: one end has external threads (typically male),  the other has internal threads (typically female). This design facilitates connection to piping  instrumentation with different interface requirements.

Primary Function & Application

This manifold is primarily used on impulse lines for pressure transmitters, differential pressure (DP) transmitters, pressure gauges,  other process instrumentation. Its core functions are to provide isolation, calibration, venting,  draining for the instrument.

Isolation: Both valves can be closed to completely isolate the instrument  the process medium, allowing for maintenance  replacement.

Calibration: While isolated, technicians can perform in-line calibration  commissioning of the instrument without interrupting the process.

Venting/Draining: Pressure can be safely released  fluid within the cavity can be drained through the common vent/bleed port (usually located between the two valve seats), ensuring operational safety.

Key Features

Connection Convenience: The internal  external thread design offers flexible connection options, simplifying installation  reducing the number of fittings required.

Compact Structure: The integrated block design saves space  allows for a neater installation.

Reliable Sealing: High-quality sealing materials (such as PTFE, graphite, metal gaskets) are typically used to ensure leak-tight performance under high pressure  with aggressive media.

Safety & Efficiency: The integrated venting function makes maintenance  commissioning work safer  more efficient.

High Durability: The valve body  key components are often constructed  robust materials like stainless steel (304SS, 316SS)  carbon steel, providing corrosion resistance  high-pressure capability.

Typical Application Industries

Widely used in industrial process control  measurement fields such as oil & gas, chemical processing, pharmaceuticals, power generation,  water treatment.

暂无评价信息！