法兰式高压止回阀H42H、H42Y、H42FPN16～45(160-450)H42HH42Y型升降式止回阀H42F101外形及连接尺寸Mainexternalandconnectingdimensi***公称压力PN(MPa)公称通径DN(mm)尺寸(mm)LL1D0D116202522033023150322403502916040260390361805028043045215653405105824580430620722451004806909029515025354025240350231503226037029160402904203618050300450452156535052058245804506407227010050071090310)