概述；主要零件材料零件名称材料牌号阀体WCB A105WCB 12Cr1MoVWC9 12Cr1MoV阀盖WCB 35WC6 12Cr1MoVWC9 12Cr1MoV支架WCBWCBWCB闸板WCBWCBWCB阀杆2Cr1325Cr2MoV20Cr1Mo1V1A25Cr2MoV20Cr1Mo1V1A阀座25304304密封环（垫片）包覆垫、增强柔性石墨填料增强柔性石墨阀杆螺母ZCuAL10Fe3?主要外形尺寸及连接尺寸????????????????????????????????????????????????????????????????????????????????????????????????????????????????????公称压力PN（MPa）公称通径DN（mm）主要外形尺寸及连接尺寸（mm）重量kgdLHL1L225.050432168403631971036557254915363197110806730595036319713510084406116443727723412510048314024372773431501257001129－－450175158711（750）1650457309638225200864（850）165055430965430028010672106764398197332.01009653312364372772341251186101402437277315150148762（750）1403526283672175148762（750）16505543096842252221041（850）165055430969635035012502255－－2605P54100V175148762（750）165055430-5832252221041（850）165055430-7042502221041（900）179555430-12143002941254208055430-2125P54140V1251366001115－－-1721757501205－－-2252178501490－－-P54170V12598630（850）12304372773122251861060（850）1680554309140430027813972265764-283435033815502536715-5591P57170V1251246001115－－-1751637501205－－-2252018501490－－-?