H11X一体式内螺纹单向阀的工作原理是在一个方向流动的流体压力作用下，阀瓣打开；流体反方向流动时，由流体压力和阀瓣的自重合阀瓣作用于阀座，从而切断流动。H11X一体式内螺纹单向阀又称为逆流阀、逆止阀、背压阀、止回阀。这类阀门是靠管路中介质本身的流动产生的力而自动开启和关闭的，属于一种自动阀门。止回阀用于管路系统，其主要作用是防止介质倒流、防止泵及其驱动电机机反转，以及容器内介质的泄放。H11X一体式内螺纹单向阀是通过螺纹连接管道，金属硬密封形式，可以达到零泄漏等级，具有安装方便 连接牢固 方便更换等优点。内螺纹形式有M G ZG NPT等。用户可根据各自情况选购。

一体式内螺纹单向阀

一体式内螺纹单向阀是一种设计紧凑、结构坚固的自动阀门，其核心功能是确保流体在管道中单向流动，防止介质倒流。该阀门的“一体式”结构是指阀体通常由一整块材料加工而成，强度高、泄漏点少，稳定性优于分体式结构。“内螺纹”连接方式使其安装简便，尤其适用于空间有限的管路系统。

它依靠流体自身的压力开启阀瓣（或阀芯），当入口压力高于出口压力时，阀门打开；当流动停止或出口压力高于入口压力时，阀瓣在弹簧力、自重或反向流体的作用下迅速关闭，从而有效防止逆流。

主要特点：

一体式阀体： 结构坚固紧凑，无外部连接缝隙，承压能力强，很大程度减少潜在泄漏点。

内螺纹连接： 安装简便，占用空间小，是中小口径管道系统的常用连接方式。

自动快速关闭： 响应迅速，能有效消除水锤现象，保护上游设备如泵等免受逆流损坏。

低启闭压力： 对流体压力要求低，即使在较低压力下也能灵敏启闭。

弹簧辅助： 多数设计内置弹簧，确保阀瓣在零压或低压差下也能紧密关闭，密封性能好。

多种材质： 可根据介质（水、油、空气、蒸汽等）和工况选用黄铜、不锈钢、碳钢或塑料等材料。

维护简单： 部分设计可在线拆卸内部阀芯，便于检查和更换。

典型应用：

广泛应用于液压系统、气动系统、冷却系统、供水系统、燃油系统、空压机出口、园艺灌溉设备以及各种需要防止介质反向流动的工业设备和家用器具中。

Integral Internal Thread Check Valve Product Overview

The Integral Internal Thread Check Valve is a compact robustly designed automatic valve whose core function is to ensure unidirectional flow of fluid in a pipeline prevent backflow of media. The "integral" structure means the valve body is typically machined a single piece of material, offering high strength, fewer potential leak paths, greater reliability compared to split-body designs. The "internal thread" connection facilitates easy installation, making it particularly suitable for piping systems with limited space.

It operates by utilizing the fluid's own pressure to open the disc ( poppet). The valve opens when the inlet pressure exceeds the outlet pressure. When the flow stops the outlet pressure becomes higher, the disc closes swiftly under the force of a spring, its own weight, the reverse flow, effectively preventing backflow.

Key Features:

Integral Body: Robust compact construction with no external body joints, offering high pressure resistance minimizing potential leakage points.

Internal Thread Connection: Easy installation a small footprint, making it a common connection type for small to medium-bore piping systems.

Automatic Quick Closing: Rapid response helps to mitigate water hammer effects protects upstream equipment (e.g., pumps) damage caused by reverse flow.

Low Cracking Pressure: Requires minimal fluid pressure to open, ensuring sensitive operation even at low pressures.

Spring-Assisted: Most designs incorporate an internal spring to ensure positive sealing tight closure at zero pressure low differential pressure.

Various Materials: Available in materials such as brass, stainless steel, carbon steel, plastic to suit different media (water, oil, air, steam, etc.) operating conditions.

Easy Maintenance: Some designs allow for in-line removal of the internal cartridge for easy inspection replacement.

Typical Applications:

Widely used in hydraulic systems, pneumatic systems, cooling systems, water supply lines, fuel systems, air compressor outlets, garden irrigation equipment, various industrial machinery household appliances prevention of media backflow is essential.