六角体止回阀

          焊接式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。H91X压缩机卡套单向阀又称为逆流阀、逆止阀、背压阀、单向阀。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。H91X压缩机卡套单向阀是通过卡套连接管道，具有安装方便 连接牢固 方便更换等优点。卡套形式又分为双卡套和单卡套2种。用户可根据各自情况选购。

六角体止回阀

六角体止回阀，特指一种阀体外形为六角形的微型单向阀。这种独特的设计使其能够使用标准扳手进行安装和拆卸，极大地方便了在狭窄空间或集成式液压/气动回路中的操作。其核心功能是允许流体（油、空气、水等）单向通过并有效防止介质反向倒流，从而保护上游设备，维持系统压力。

六角体止回阀体积小巧，结构紧凑，通常通过其外部的公制或英制外螺纹（其六角体与螺纹是一个整体）直接拧入带有内螺纹的端口（如阀块、油路板、气缸或泵的接口），形成一种简洁、无泄漏的连接。其内部启闭元件通常为钢球或锥阀芯，依靠弹簧力和系统压力实现自动启闭。

六角体止回阀主要特点：

六角形阀体： 便于使用通用工具（扳手）进行安装和紧固，提供了抗扭特性，避免了圆形阀体打滑的问题。

紧凑微型设计： 体积小，重量轻，非常适合空间受限的安装场合。

螺纹连接： 安装简便，集成度高，密封性好。

启闭迅速： 内部结构简单，响应速度快，有助于减少压力冲击（水锤）。

六角体止回阀多种材质： 阀体可采用碳钢、不锈钢、黄铜等，密封件可选丁腈橡胶（NBR）、氟橡胶（FKM）等，以适应不同介质（油、空气、水）和工况。

六角体止回阀典型应用：

六角体止回阀液压系统： 集成于液压阀块、油缸、液压泵或马达的油口中，作为背压阀或补油阀。

六角体止回阀气动系统： 安装于气动元件、气缸、汇流板的接口，控制气流方向。

六角体止回阀润滑系统： 用于机械设备润滑管路。

六角体止回阀冷却系统： 用于冷却液回路。

六角体止回阀通用工业设备： 任何需要紧凑型单向阀的场合。

Product Overview of Hex Body Check Valves

Product Overview:

A hex body check valve refers to a miniature one-way valve characterized by its hexagonal (six-sided) external body. This unique design allows for easy installation  removal using a standard wrench, greatly facilitating operation in confined spaces  within integrated hydraulic/pneumatic circuits. Its core function is to allow fluid (oil, air, water, etc.) to flow in one direction while effectively preventing reverse flow, thereby protecting upstream equipment  maintaining system pressure.

This valve is small  compact in size. It is typically installed by screwing its external metric  imperial male threads (the hex body is integral with the threads) directly into a female-threaded port (such as in a manifold block, hydraulic plate, cylinder,  pump), creating a simple  leak-tight connection. The internal closing element is usually a ball  poppet, which operates automatically via spring force  system pressure.

Key Features:

Hexagonal Body: Facilitates installation  tightening with universal tools (wrench), providing excellent anti-rotation characteristics  avoiding the slippage common with round bodies.

Compact & Miniature Design: Small size  light weight make it ideal for space-constrained applications.

Threaded Connection: Easy installation, high integration,  good sealing.

Rapid Response: Simple internal structure enables quick opening  closing, helping to mitigate pressure shocks (water hammer).

Variety of Materials: The body can be made  carbon steel, stainless steel, brass, etc. Seals can be NBR, FKM, etc., to suit different media (oil, air, water)  operating conditions.

Typical Applications:

Hydraulic Systems: Integrated into the ports of hydraulic manifolds, cylinders, pumps,  motors, serving as a back-pressure valve  make-up valve.

Pneumatic Systems: Installed on interfaces of pneumatic components, cylinders,  manifold plates to control airflow direction.

Lubrication Systems: Used in lubrication lines of machinery.

Cooling Systems: Used in coolant circuits.

General Industrial Equipment: Any application requiring a compact check valve.

关键术语翻译 (Key Terminology Translation):

六角体止回阀: Hex Body Check Valve / Hexagonal Check Valve

阀块: Manifold Block

端口: Port

公螺纹: Male Thread

母螺纹: Female Thread

钢球: Ball

锥阀芯: Poppet

背压阀: Back-Pressure Valve

补油阀: Make-up Valve

丁腈橡胶: Nitrile Rubber (NBR)

氟橡胶: Fluorocarbon Rubber (FKM/Viton)

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