進口截止止回閥。截止止回多功能閥性能描述 Performance description

截止止回閥一閥兩用,可代替一個截止閥和一個止回閥閥桿和閥瓣的連接設計成可以隔開的結構，既可以切斷，又可以止回 RETZ One stop check valve can be used for two purposes. It can replace one stop valve and one check valve. The connection between the stem and disc of the check valve is designed to be separated, which can be cut off and checked

作截止閥時：在關閉閥門時，閥桿可頂住閥瓣運動，使閥瓣密封面與閥座密封面密合，達到關閉閥門狀態。此時，閥門起切斷管路中介質的截止閥作用 When acting as a stop valve: when closing the valve, the valve stem can support the valve disc to move, so that the sealing surface of the valve disc and the sealing surface of the valve seat can be closed. At this time, the valve acts as a stop valve to cut off the medium in the pipeline

作止回閥時：當開啟閥門時，是閥桿與閥瓣脫開，此時，閥門可作為防止介質倒流的止回閥用 When used as a check valve: when the valve is opened, the valve stem and disc are separated. At this time, the valve can be used as a check valve to prevent backflow of media

進口截止止回閥。截止止回多功能閥技術要求Applicable Standards

設計標準 Design Rating∶EN12516、DIN3356、ASMEB16.34；

結構長度Face to Face∶EN558、DIN3202、ASMEB16.10；

法蘭標準Flanged Ends∶EN1092-1、GB/T9113、DIN2543-2545、ASMEB16.5 ；

檢查和試驗 Inspection & Testing∶EN12266、DIN 3230、AIP598

規格尺寸 Size : 2～12"

公稱壓力 Nominal pressure：PN16～PN40、CL150～300LB

適應溫度 Applicable temperature ：-20～350℃

波紋管的結構 Structure of bellows

閥芯結構 Valve core structure

錐面密封∶密封面不殘留雜質∶在趨于關閉時，密封面具有自清潔作用，實現線性密封 Conical sealing: no impurities remain on the sealing surface: when the sealing surface tends to close, the sealing surface has self-cleaning effect to achieve linear sealing

平衡雙閥瓣密封∶小閥瓣緩解壓力后帶動大閥瓣輕松打開retz品牌  Balanced double disc sealing: small disc releases pressure and drives large disc to open easily

平面軟密封∶開啟和關閉時軟密封表面可防止火花產生，適用于氣體介質或耐腐蝕要求的工況 Flat soft seal: the soft seal surface can prevent sparks when opening and closing, and is suitable for working conditions with gas medium or corrosion resistance requirements

主要零部件材料 Main parts and materials