H91X卡套止回阀又称为逆流阀、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。焊接式单向阀只允许介质向一个方向流动，而且阻止方向流动。

       公称压力：PN2.5 PN4 PN6.4 PN16 PN40Mpa
       公称通径：DN5～DN125
       适用介质：油﹑水﹑气等多种非腐蚀性或腐蚀性介质
       适用温度：-20℃～+440℃ -70℃～-240℃ ≤540℃ ≤570℃等
       制造材料：20#﹑1Cr18Ni9Ti﹑304﹑316﹑316L﹑12Cr1Mov等

H91X卡套止回阀

H91X卡套止回阀产品定义与用途

H91X卡套止回阀，也称为卡套式单向阀或逆止阀，是一种依靠管路中介质自身流动产生的力来自动开启和关闭的自动阀门。它的主要作用是防止介质倒流、防止泵及驱动电机反转，以及保障容器内介质的密封。这种阀门广泛应用于石化、石油、液化气、食品、制药等行业的管路系统。

H91X卡套止回阀工作原理

当介质顺向流动时，流体压力会推动阀瓣开启，允许介质通过。当介质停止流动或发生逆流时，阀瓣会依靠弹簧作用力、自身重量或逆流介质的力量自动关闭，从而有效防止介质倒流。

H91X卡套止回阀主要特点

· 结构紧凑：采用内装摇臂旋启式结构，所有启闭件均安装在阀体内部，整体无外漏点，结构紧凑。

· 密封性能好：阀瓣和阀座的密封面可采用不同硬度的硬质合金喷焊而成，密封稳定，耐磨耐高温，抗擦伤性能好，寿命长。

· 安装简便：卡套式连接便于安装和拆卸，适用于各种高压环境。

H91X卡套止回阀主要技术参数

为了让您更清晰地了解H91X卡套止回阀的性能指标，我整理了以下H91X卡套止回阀关键参数表格：

参数类别 具体内容

公称压力 (Nominal Pressure) PN10 - PN160  或 4.0-32.0MPa  或 可达42.0MPa

公称通径 (Nominal Diameter) DN5 - DN125  (常见 DN6, DN8, DN10, DN12 等 )

适用温度 (Applicable Temperature) -40℃ ~ +180℃  或 -20℃ ~ +440℃

阀体材质 (Body Material) 不锈钢 (如 304, 316, 316L )；20#；1Cr18Ni9Ti

连接形式 (Connection Form) 卡套式 (双卡套 )

适用介质 (Suitable Media) 水、油、气、溶剂、酸、天然气等多种非腐蚀性或腐蚀性介质

H91X卡套止回阀主要零件材料

根据不同的使用环境和压力等级，H91X卡套止回阀的零件材料也有所不同，常见的材料组合包括：

· 阀体 (Body): 304SS, 316SS, 316L, 哈氏合金等

· 阀瓣 (Disc): 不锈钢

· 密封面 (Sealing Surface): 硬质合金喷焊

Product Overview: H91X Ferrule Check Valve

The H91X Ferrule Check Valve, also known as a ferrule-type one-way valve non-return valve, is an automatic valve that relies on the force generated by the flow of the medium in the pipeline to open close automatically . Its primary function is to prevent backflow of the medium, protect pumps drive motors reversal, ensure the containment of media within vessels . This type of valve is widely used in pipeline systems across industries such as petrochemical, petroleum, liquefied gas, food, pharmaceuticals .

Operating Principle

When the medium flowsforward, the fluid pressure pushes the disc open, allowing the medium to pass through. When the medium stops flowing reverses, the disc closes automatically under the action of spring force, its own weight, the pressure of the reverse medium, effectively preventing backflow .

Key Features

· Compact Structure: It employs a built-in swing arm structure, with all opening closing components housed inside the valve body, resulting in no external leakage points a compact design .

· Good Sealing Performance: The sealing surfaces of the disc seat can be hardfaced with hard alloys of different hardness levels, ensuring reliable sealing, good wear high-temperature resistance, excellent anti-galling properties, a long service life .

· Easy Installation: The ferrule connection facilitates easy installation disassembly, making it suitable for various high-pressure environments .

Main Technical Parameters

Parameter Category Specific Content

Nominal Pressure PN10 - PN160   4.0-32.0MPa   up to 42.0MPa

Nominal Diameter DN5 - DN125  (Common sizes: DN6, DN8, DN10, DN12, etc. )

Applicable Temperature -40℃ ~ +180℃   -20℃ ~ +440℃

Body Material Stainless Steel (e.g., 304, 316, 316L ); 20#; 1Cr18Ni9Ti

Connection Form Ferrule type (Double ferrule )

Suitable Media Water, oil, gas, solvents, acids, natural gas, various other non-corrosive corrosive media

Main Part Materials

Depending on the application environment pressure rating,the materials for the main parts of the H91X Ferrule Check Valve vary. Common material combinations include:

· Body: 304SS, 316SS, 316L, Hastelloy, etc.

· Disc: Stainless Steel

· Sealing Surface: Hardfaced alloy