主要性能参数:Main Performance Parameters:公称压力Nominal Pressure( bar)101625试验压力(MPa)TestingPressure壳体Shell1.52.43.75密封Seal1.11.762.75铸铁法兰连接标准Cast Iron Flange StandardGB/T 17241.6-98铸钢法兰连接标准Carbon Steel Flange StandardGB/T 9113.1-2000 主要零部件材质:Materials of Main Parts:名 称Name材 料Material阀体,导流体Body,Flow deflector铸铁,球墨铸铁,铸钢Cast Iron,Ductile Bronze,Carbon Steel阀座,轴瓦,阀瓣,轴Seat,Bearing bush, Valve petal,Stem青铜或不锈钢Bronze,Stainless Steel弹簧Spring不锈钢Stainless Steel