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一、用途(Application)

旋啟式止回閥安裝在管路系統，其主要作用是防止介質倒流，是一種依靠介質壓力開啟和關

閉的自動閥門。

適用于公稱壓力 PN1.0Mpa~42.0Mpa、Class150~2500;公稱通徑 DN50~1200mm、NPS2~48″；

工作溫度-196~540℃的各種管路上，用于防止介質倒流。通過選用不同的材質，可適用于水、

蒸氣、油品、硝酸、醋酸、強氧化性介質等多種介質。

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、性能參數(Perbance beter)

公稱壓力

Nominal pressure

國標 PN0.6Mpa~PN10.0Mpa 、美標 150LB~2500LB

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

閥體 Body  WCB 碳鋼  CF8 不銹鋼  CF3 不銹鋼  CF8M 不銹鋼  CF3M 不銹鋼

閥瓣 Disc  CF8  CF8 不銹鋼  CF3 不銹鋼  CF8M 不銹鋼  CF3M 不銹鋼

閥軸 shaft  2Cr13  CF8 不銹鋼  304L 不銹鋼  316 不銹鋼  316L 不銹鋼

彈簧 Spring  304  CF8 不銹鋼  304L 不銹鋼  316 不銹鋼  316L 不銹鋼

適用介質

Suitable medium

水、蒸氣、油品等

Water vapour

oil

硝酸等腐蝕性介質

Nitric acid and other

corrosive media

強氧化性介質

Strong oxidizing

medium

醋酸等腐蝕性介質

Acetic acid and other

corrosive media

尿素等腐蝕性介質

Urea and other

corrosive media

適用溫度

Suitable

temperature

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

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三、采用標準(Standard)

設計與制造：API 6D、ANSI B16.34

Design and Manufacture: PI 6D ANSI B16.34

結構長度：API 6D、ANSI B16.10、DIN 3202

Sructure length: PI 6D ANSI B16.10 DIN3202

壓力——溫度等級：ANSI B16.34、DIN 2401、GB/T9124、HG20605、SH3406、JB/T74

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

試驗與檢驗：API 598、JB/T9092

Test and checkout: API 598 JB/T9092

配管法蘭：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、安裝、使用注意事項(Instgallation and caution)

安裝前應仔細核對標志是否與使用要求相符。

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

檢查閥門內腔和密封面，不允許與污物附著。

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

檢查連接螺柱是否均勻擰緊。

Check the connection stud is screwed evenly

從入口端往里推動閥瓣，檢查其開啟及復位是否靈活。

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

五、維護保養(Maintenance)

安裝后，應定期進行檢查主要檢查項目：

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

密封面磨損情況

Sealing surface wear

搖桿轉動的磨損情況

Wear rocker rotate

閥體的內腔以及密封面之間有否有污物堆積

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

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五、安裝方向(Installation direction)