1、GB/T585-2008表1截止止回阀的基本参数公称压力PN/公称通径DN/型式适用介质MPamm1.065150淡水、滑油、燃油和温度不超1.6125150A过300C的蒸气2.520150B4.065100淡水、滑油、燃油和温度不超6.42050过400C的蒸气1.0200300淡水、滑油、燃油和温度不超1.665250AS.过300的蒸气BS2.5201504.065100茨水、滑油、燃油和温度不超6.42050过400C的蒸气3.3结构和基本尺寸3.3.1PN1.0MPa、PN1.6MPa和PN2.5MPa的A型、B型截止止回阀的结构和基本尺寸见图1、图2和表2。单位为毫米DN20DN
2、50图1A型、AS型(DN20DN150)图2B型、BS型(DN20DN150)2GB/T585-2008表2A型，B型截止止回阀的基本尺寸单位为毫米公称结构尺寸理论重量/压力称壁厚法螺栓轮通升程kgPN/LHHMPaDNA型B型A型B型B型DDDbn/个Th.DA型B型6529011530827511561551231041401714.712.78031012533929812571701381181602018.917.88141.01003501503643151351901581381514M141802528.423.81254001754143541552151831641032
3、37.933.420011504801804683961609240208190123850.741.3125400175453393155225187168250223250.844.31.6171510M1615048018050543316092552171961228023865.358.12015075759568484.44.321720311M128082516080801057356125.04.932180852362168511583641006.86.140200902602369012593741513M1412011118.37.1502302882589513510
4、3140121410.810.02.5958465290115334300115170132110151781601418.516.98031012536232112518514712617M16200172024.321.3161003501504173681352051671462501022534.430.81254001754814211559240196172192802459.154.821M20321505002005374651752702262002012320273879.871.63.3.2PN4.0MPa和PN6.4MPa的A型、B型截止止回阀的结构和基本尺寸见图3、图4和表3。单位为毫米DN20DN50口8图3A型、AS型图4B型、BS型
