局部阻力系数表

局部阻力系数表常用管件和阀件底局部阻力系数值管件和阀件名称值标准弯头45，=0.3590，=0.7590方形弯头1.3180回转头1.5活接管0.4弯管R/d30456075901051201.50.080.110.140.160.1750.190.202.00.070.100.120.140.150.160.17突然扩大A1/A200.10.20.30.40.50.60.70.80.9110.810.640.490.360.250.160.090.040.011突然缩小A1/A200.10.20.30.40.50.60.70.80.910.50.470.450.380.340.30.250.200.150.090标准三通管 =0.4 =1.5 =1.3 =1闸阀全开3/4开1/2开1/4开0.170.94.524截止阀（球心阀）全开=6.41/2开=9.5碟阀a510203040455060700.240.521.543.9110.818.730.6118751旋塞5102040600.240.521.5617.3206单向阀摇板式=2球形式=70角阀(90)5底阀1.5滤水器(或滤水网)2水表（盘形）7