产品名称：丁式两阀组

产品型号：DCCT2

所属类别：仪表阀组 >> 两阀组

所属系列：DC

丁式两阀组安装尺寸图

丁式两阀组

丁式两阀组，也称为“二阀组”或“压力表阀组”，是一种专为压力表、压力变送器等现场仪表设计的紧凑型过程连接阀组。其名称源于其阀体形状类似于汉字“丁”。它通过一个三通结构的阀体，集成两个截止阀（通常为球阀或针阀），实现对仪表的有效控制。

丁式两阀组主要功能与用途

该阀组主要用于压力测量仪表的管路上，核心功能是仪表的压力测量控制、在线隔离和零点校验。

过程连接与测量：提供一个稳定的接口，将压力仪表连接到过程管道。

在线隔离：通过关闭阀门，可将压力仪表与过程介质完全隔离，便于进行仪表的在线维护、更换或拆卸，而无需系统停机。

零点校验/泄压：在仪表隔离后，可通过开启泄压功能将阀组与仪表之间的压力泄放至大气，从而安全地检查或校准仪表的机械零点。

丁式两阀组主要特点

结构紧凑：“丁”字形一体化结构，体积小，重量轻，安装占用空间极小。

操作简便：通常采用手轮或手柄操作，启闭迅速，操作简单直观。

密封稳定：阀杆通常采用防吹出结构，密封材料多采用聚四氟乙烯（PTFE）、增强石墨等，确保无外漏，安全稳定。

安装灵活：接口形式多样，可提供内螺纹、外螺纹、卡套、焊接等多种连接方式，满足不同现场管道需求。

经济实用：结构简单，成本效益高，是压力测量中常见和基础的阀组。

丁式两阀组与“内外螺纹式两阀组”的区别

“内外螺纹式两阀组”更强调接口类型的组合（一端内螺纹，一端外螺纹），而“丁式两阀组”更强调其独特的“丁”字形结构。两者功能高度重叠，但“丁式”在结构上更为特指。

典型应用行业

广泛应用于石油、化工、冶金、电力、制药、水处理等任何需要压力测量的工业领域，是压力表标准的配套阀门之一。

T-Pattern Two-Valve Manifold Product Overview

 Product Definition

A T-pattern two-valve manifold, also known as a "gauge valve"  "pressure gauge manifold", is a compact process connection valve assembly specifically designed for field instruments like pressure gauges  pressure transmitters. Its name derives  its valve body's resemblance to the shape of the letter "T". It integrates two shut-off valves (typically ball valves  needle valves) into a single three-way body to provide effective control for the instrument.

Primary Function & Application

This manifold is primarily used on impulse lines for pressure measurement instruments. Its core functions are measurement control, in-line isolation,  zero checking for the gauge.

Process Connection & Measurement: Provides a stable interface to connect the pressure instrument to the process pipeline.

In-line Isolation: By closing the valves, the pressure instrument can be completely isolated  the process medium, enabling in-line maintenance, replacement,  removal of the instrument without requiring a system shutdown.

Zero Checking/Venting: After the instrument is isolated, the pressure between the manifold  the instrument can be vented to atmosphere to safely check  calibrate the instrument's mechanical zero point.

3. Key Features

Compact Structure: Integrated "T"-shaped design is small in size  light in weight, requiring minimal installation space.

Easy Operation: Features handwheel  lever operation for quick  easy opening  closing.

Reliable Sealing: The valve stem often incorporates a blow-out-proof design. Sealing materials like PTFE  reinforced graphite ensure no external leaks, guaranteeing safety  reliability.

Flexible Installation: Offers various end connections, including internal (FPT)  external (MPT) threads, tube fittings (compression),  weld ends, to meet different piping requirements.

Cost-Effective: Simple structure  high cost-effectiveness make it the most common  fundamental manifold for pressure measurement.

Difference  "Internal & External Thread Manifold"

The "Internal & External Thread Two-Valve Manifold" emphasizes the combination of connection types (one end female, one end male threads). In contrast, the "T-Pattern Manifold" specifically refers to its distinctive "T" shape. Their functions are highly similar, but "T-Pattern" is more specific in terms of structure.

Typical Application Industries

Widely used in any industrial sector requiring pressure measurement, such as oil & gas, chemical processing, metallurgy, power generation, pharmaceuticals,  water treatment. It is one of the most standard valves配套 (accessory) for pressure gauges.