阀门的Design Rating和Pressure Rating应该怎么理解? Valve Globe Valve Size: 8 MM Design Rating: 400 Bar Connection: BW END 14 MM Body Material: 1.4571 AUSTENITIC SS Trim: 1.4571 AUSTENITIC SS Style: Screw in Bonnet Temperature Rating: 550 DEG Face to Face Length: 130 MM Operated: By Hand Material Certificate Should be 3.1 EN10204 The Valve size is: DN8 Pressure Rating is: PN 400 FOR USE ON IMPULSE LINES OF GLAND STEAM OF MAIN TURBINE 求问这两个Rating应该怎么理解?还有最后一句是用于什么地方呢? 先行谢过。。。 查看更多2个回答 . 3人已关注