一、用途(Application)

旋启式止回阀安装在管路系统，其主要作用是防止介质倒流，是一种依靠介质压力开启和关

闭的自动阀门。

适用于公称压力 PN1.0Mpa~42.0Mpa、Class150~2500;公称通径 DN50~1200mm、NPS2~48″；

工作温度-196~540℃的各种管路上，用于防止介质倒流。通过选用不同的材质，可适用于水、

蒸气、油品、硝酸、醋酸、强氧化性介质等多种介质。

Swing Check Valves is installed in a piping system, which is used to prevent from the substance

back-flowing.

It is an automatic valve depending on the pressure to open and close.

Apply to nominal pressure：PN1.0Mpa~42.0Mpa Class150-2500;Nominal

diameterDN50~1200mm NPS2~48” ,operating temperature-196~540℃in a piping system,it is

used to prevent the back flowing of the media. It can be applicable to water, vapour, oil, hydrogen

nitrate, ethylic acid and strong oxidizing media by choosing different materials.

二、性能参数(Perbance beter)

公称压力

Nominal pressure

国标 PN0.6Mpa~PN10.0Mpa 、美标 150LB~2500LB

GB PN0.6Mpa~PN10.0Mpa CLASS 150LB~2500LB

阀体 Body  WCB 碳钢  CF8 不锈钢  CF3 不锈钢  CF8M 不锈钢  CF3M 不锈钢

阀瓣 Disc  CF8  CF8 不锈钢  CF3 不锈钢  CF8M 不锈钢  CF3M 不锈钢

阀轴 shaft  2Cr13  CF8 不锈钢  304L 不锈钢  316 不锈钢  316L 不锈钢

弹簧 Spring  304  CF8 不锈钢  304L 不锈钢  316 不锈钢  316L 不锈钢

适用介质

Suitable medium

水、蒸气、油品等

Water vapour

oil

硝酸等腐蚀性介质

Nitric acid and other

corrosive media

强氧化性介质

Strong oxidizing

medium

醋酸等腐蚀性介质

Acetic acid and other

corrosive media

尿素等腐蚀性介质

Urea and other

corrosive media

适用温度

Suitable

temperature

-29~425℃  -196~540℃  -196~425℃  -196~540℃  -196~455℃

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三、采用标准(Standard)

设计与制造：API 6D、ANSI B16.34

Design and Manufacture: PI 6D ANSI B16.34

结构长度：API 6D、ANSI B16.10、DIN 3202

Sructure length: PI 6D ANSI B16.10 DIN3202

压力——温度等级：ANSI B16.34、DIN 2401、GB/T9124、HG20605、SH3406、JB/T74

Pressure-- temperature grade: NSI B16.34 DIN2401 GB/T9124 HG20605 SH3406 JB/T74

试验与检验：API 598、JB/T9092

Test and checkout: API 598 JB/T9092

配管法兰：JB/T74~90、GB/T9112~9124、HG20592~20635、SH3406、ANSI B16.5、DIN2543~2548、

GB/T13402、API605、ASME B16.47

Flang:JB/T74~90 GB/T9112~9124 HG20592~20635 SH3406 ANSI B16.5 DIN2543~2548

GB/T13402 API605 ASME B16.47

四、安装、使用注意事项(Instgallation and caution)

安装前应仔细核对标志是否与使用要求相符。

Make sure the mark is consistent with the using requirement before installation.

检查阀门内腔和密封面，不允许与污物附着。

Check the valve cavity and the sealing surface, which is not allowed that the dirt is attacted.

检查连接螺柱是否均匀拧紧。

Check the connection stud is screwed evenly

从入口端往里推动阀瓣，检查其开启及复位是否灵活。

Push in the valve flap from the entrance, check if it is flexible to open and reset

五、维护保养(Maintenance)

安装后，应定期进行检查主要检查项目：

After installation, should be regularly inspected the main inspection items regularly

密封面磨损情况

Sealing surface wear

摇杆转动的磨损情况

Wear rocker rotate

阀体的内腔以及密封面之间有否有污物堆积

check there is no dirt accumulation between the inner cavity of the body and the sealing surface.

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五、安装方向(Installation direction)