阀门、法兰的最大工作压力与介质温度关系表大全1、阀门的最大工作压力与介质温度关系1.1铸铁阀门公称压力介质工作温度/°c<120200250300PN/MPa最大工作压力/MPaPl2P20P25P300.10.10.10.10.10.250.250.250.200.200.40.40.380.360.320.60.60.550.50.51.01.00.90.80.81.61.61.51.41.32.52.52.32.12.01.2碳钢阀门公称压力介质工作温度/c<200250300350400425450PN/MPa最大工作压力/MPaP20P25P30P35P40P42P450.10.10.10.10.070.060.060.050.250.250.230.20.180.160.140.110.40.40.370.330.290.260.230.180.60.60.550.50.440.380.350.271.01.00.920.820.730.640.580.451.61.61.51.31.21.00.90.72.52.52.32.01.81.61.41.14.04.03.73.33.02.82.31.86.46.45.95.24.74.13.72.910.010.09.28.27.36.45.84.516.016.014.713.111.710.29.37.220.020.018.416.414.612.811.69.025.025.023.020.518.216.014.511.232.032.029.426.223.420.518.514.41.3青铜、黄铜、紫铜阀门公称压力介质工作温度（°C）<120200250PN/MPa最大工作压力（MPa）Pl2P20P250.10.10.10.070.250.250.20.170.40.40.320.270.60.60.50.41.01.00.80.71.61.61.31.12.52.52.01.74.04.03.22.72、法兰的工作温度与工作压力的对应关系公称压力 （MPa）法兰材料工作温度C100150200250300350400最高无冲击压力MPa1.0200.710.680.640.580.510.420.321Cr18Ni9Ti0.780.690.640.600.510.420.321.6201.601.441.281.120.960.800.561Cr18Ni9Ti1.381.291.211.131.061.020.9762.0201.421.351.271.151.020.840.651Cr18Ni9Ti1.571.391.291.21.020.840.652.5202.52.252.01.751.501.250.881Cr18Ni9Ti2.152.011.891.771.661.591.534.0204.03.603.202.802.402.01.401Cr18Ni9Ti3.443.223.032.832.652.542.445.0203.563.393.182.882.572.392.191Cr18Ni9Ti3.943.473.243.012.782.662.6610.0207.126.786.365.765.144.784.381Cr18Ni9Ti7.886.946.946.025.565.325.32。