美标止回阀特点①产品的设计制造符合美国国家标准ANSIB16.34，美国石油协会标准APl6D要求。②阀瓣为旋启式，流道为直通式，水平管道、垂直管道均可安装。③摇杆销轴采用内装式结构，减少了外泄漏缺点。④阀体，阀盖为螺栓连接，高压情况下(PN≥10MPa)。中法兰采用内压自密封结构，使得产品体积小，重量轻，密封可靠。名称止回阀设计标准APl6D．JlSB2074-2084结构长度ANSIB16.10,JISB2002配管法兰ANSIB16.5、JISB2212-2214对焊端尺寸ANSlB16.25检验与试APl6D或APl598,JlSB2003美标止回阀试压规范压力等级或公称压力壳体试验(Mpa)密封试验(MPa)高压液密封低压气密封150Lb．PN2.0MPa2.942.160.6300Lb．PN5．OMPa7.675.62600Lb．PNlO.OMPa15.311.23JISlOK2.11.6JIS20K5.13.8美标止回阀主要零件材料及性能规范零件名称材料阀体阀盖阀瓣摇杆ASTMA216WCBASTMA351CFBASTMA351CF8MASTMA351CF3ASTMA351CF3M销轴1Crl3OCrl8Ni9OCrl7Nil2M02OOCrl9Nil0OOCrl7Nil4M02F6a304316304L316L阀瓣密封面13Cr13CrSTL本体本体STL本体STLRSTL阀座13CrSTLSTL阀瓣螺母1Crl30Crl8Ni9OCrl7Nil2M0200Crl9NilOOOCrl7Ni4M02410304316304L316L防松销OCCr8Ni90Crl7Nil2M0200Crl9NilO00Crl7Nil4M02304316304L316L垫片柔性石墨复合垫(芯板：碳钢或不锈钢)不锈钢带，柔性石墨缠绕垫中法兰螺栓350CrM0ASTMA193B7OCr18Ni9ASTMA193B8中法兰螺母45ASTMA1942HOCr18Ni9ASTMA1948适用工况适用介质水、蒸汽、油品等硝酸等腐蚀介质醋酸等腐蚀介质强氧化性介质尿素等腐蚀性介质适用温度(℃)-29～425-40～200(超出该温度范围、请在订货时注明)注：1如法兰密封面采用凸面以外的型式。请在订货时注明。[H44]主要连接与外形尺寸及重量磅级公称通径(DN)主要连接尺寸(mm)H44外形尺寸重量(kg)inmmLDD1D2bfz-φdH150Lb(2.0Mpa)(10K)250203152120.592161.64-191651721/265216178139.510517.51.64-1917525380241190152.512719.51.64-19190294100292229190.5157241.68-19215505125330254216186241.68-22245756150356279241.521625.51.68-22265858200495343298.5270291.68-223201501025062240636232430.51.612-2536524012300698483432381321.612-2541535014350787533476413351.612-2946046016400864597540470371.616-2949558020500978698635584431.620-32590840246001295813749.5692481.620-356501140287001448927863.580071.51.628-35300Lb(5.0MPa)(20K)2502671651279222.51.68-191902821/26529219014910525.51.68-22205333803182101681272851.68-22220454100356254200157321.68-22245705125400279235186351.68-22275110615044431827021636.51.612-22295150820053338133027041.51.612.2533023010250622444387.5324481.616-2942039012300711521451381511.616-3248052014350838584514.5413541.620-3253571016400864648571.547057.51.620-35585890205001016775686584.563.5