不锈钢法兰铸钢硬密封蝶阀D343W-16P法兰式双偏心金属硬密封蝶阀用途：主要适用于石油化工、冶炼、给排水蒸气、空气等腐蚀性及非腐蚀性介质管道线上，作调节和截流之用。特点：体积小、重量轻。结构简单、紧凑、采用偏心结构，楔紧原理，启用力短小，操作灵活。90°启闭迅速，流阻小，流量特性趋于直线。摩擦损失小，使用寿命长。更换维修方便。技术参数项目类别单位参数公称通径mm50~1200公称压力MPa1.6密封试验压力MPa1.76壳体试验压力MPa2.4适应介质温度温度等级≤200250300350压力等级1.6MPa1.41.21.1驱动方式手动电动气动法兰连接标准JB/T82.1-94验收标准GB/T13927D343-16C兰式偏心金属密封蝶阀外形连接尺寸公称通径DD1LH1H2H3n-d螺栓bolt5016512510870176684-18M166518514511290176684-18M16802001601149095684-8M16100220180127115230688-18M16125250210140130240958-18M16150285240140150255958-23M202003402951521752909512-23M2025040535516522031011212-26M2430046041017824235011212-26M2435052047019027535013516-26M2440058052521630538013516-30M2745064058522233042016720-30M2750071565022936546016720-34M3060084077026744568717520-36M3370091084029247075217524-36M33800102595031854580717524-41M369001125105033074990332528-41M3610001255117041089996132528-42M3912001485139047096899032532-48M45)