進口雙重密封波紋管截止閥性能描述 Performance description

波紋管截止閥閥桿波紋管加填料雙重密封設計，具有雙重保險，使得閥桿處的密封更安全可靠，并符合國際密封標準 The double sealing design of bellows and packing for the valve stem of bellows stop valve has double insurance, which makes the sealing at the valve stem safer and more reliable, and conforms to international sealing standards

閥芯采用錐面密封，密封面不殘留雜質，在趨于關閉時，密封面具有自清潔作用。錐形密封面，可以使閥桿軸向力轉化為密封力時具有放大作用，密封性能更好 RETZ The valve core is sealed with a conical surface, and the sealing surface is free of impurities. When it tends to close, the sealing surface has a self-cleaning effect. Conical sealing surface can enlarge the axial force of valve stem when it is converted into sealing force, and the sealing performance is better

進口雙重密封波紋管截止閥技術要求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 : 1/2～12"

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

適應溫度 Applicable temperature ：-20～350℃

波紋管的結構

閥芯結構

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

閥體和內部結構

主要零部件材料 Main parts and materials