产品特性：

       HG5-227-15液面计为焊接连接，阀瓣为旋塞提升，锥面密封；公称压力≤10000Psi，工作温度适合-29℃～+250℃；JX49W/H液位计针形（型）截止阀广泛使用于水、油、气等腐蚀性与非腐蚀性介质。

产品简介：

       液面计也叫液位计阀门，液位计考克，主要在液位计的控制管道中应用、大石化工程、工业锅炉工程、化工工程、机电工程大量应用。主要为一端为法兰连接，一端为螺纹式，密封一般为聚四氟密封，法兰可以根据客户的要求定做，压力1.6MPA。

       材质主要：20#,304,201,316,316L
       手柄方式：手轮式,条钢式,有红色,蓝色,黑色,黄色
       设计制造：GB/T12224-1989,JB/T7747-1995
       连接方式：卡套式，内螺纹式，外螺纹式
       结构特征：一端内螺纹式，一端法兰式
       阀门检验：GB/T13927-1992

液面计阀门

液面计阀门，也称为液位计专用阀、仪表阀或针型阀，是安装在液位计（如玻璃管液位计、磁性翻板液位计）与设备容器之间的关键管路上，用于控制、隔离和保护的专用阀门。

液面计阀门核心作用是作为一个安全的“开关”，实现液位计与过程介质的稳定连通或切断。通过开启和关闭操作，它可以实现对液位计的在线维护、排污冲洗、流量调节和安全隔离，是确保液位测量系统安全、稳定、长周期运行不可或缺的附件。

该阀门通常采用针形阀芯或球阀结构。针型阀可用于精细调节流量，保护脆弱的液位计玻璃管免受流体冲击；而球阀则用于快速切断，操作简便。

液面计阀门主要特点：

安全隔离： 在液位计需要检修或更换时，可安全地切断容器内的介质，实现不停车操作，保障人员和设备安全。

流量调节： （特指针型阀）可微调流入液位计的介质流量，避免压力或流量突变对液位计造成损坏。

密封稳定： 采用好的填料和密封材料，确保阀门在关闭状态下无内外泄漏，适用于高压、高温及腐蚀性介质。

结构紧凑： 设计小巧，安装空间要求低，连接方式多样（螺纹、法兰、焊接），便于集成到各种流程中。

液面计阀门自动关闭功能： 部分安全型阀门在液位计发生破裂时能自动切断流路，防止介质大量泄漏。

液面计阀门典型应用：

广泛应用于石油化工、制药、电力、食品、水处理等行业中各种锅炉、反应釜、储罐、塔器、换热器等压力容器上的液位计配套管路。

Level Gauge Valve Product Overview

A Level Gauge Valve, also known as a Gauge Root Valve, Isolation Valve for Level Gauge, Needle Valve, is a specialized valve installed in the critical pipeline between a level gauge (such as a sight glass gauge magnetic level indicator) the process vessel. Its primary function is to control, isolate, protect the level gauge.

It acts as a safe "switch," enabling the reliable connection isolation of the level gauge the process media. Through precise opening closing operations, it facilitates online maintenance, blowdown, flushing, flow regulation, safe isolation of the level gauge. It is an indispensable accessory for ensuring the safe, stable, long-term operation of level measurement systems.

This valve typically features a needle valve ball valve design. Needle valves allow for fine flow regulation to protect fragile gauge glass fluid shock, while ball valves provide quick shut-off for simple operation.

Key Features:

Safe Isolation: Allows the level gauge to be safely isolated the vessel's media for inspection replacement without requiring a system shutdown, protecting personnel equipment.

Flow Regulation: (Specific to needle valves) Enables fine adjustment of the media flow into the gauge, preventing damage sudden pressure flow changes.

Reliable Sealing: Utilizes high-quality packing sealing materials to ensure zero internal external leakage in the closed position, suitable for high-pressure, high-temperature, corrosive media.

Compact Design: Small space-saving, with various end connections (threaded, flanged, welded) for easy integration into diverse process lines.

Auto-shutdown Function: Some safety valves feature an automatic shut-off mechanism that activates if the gauge ruptures, preventing major media leakage.

Typical Applications:

Widely used in piping for level gauges on various pressure vessels like boilers, reactors, storage tanks, columns, heat exchangers across industries such as petrochemical, pharmaceutical, power generation, food beverage, water treatment.