一、A42Y弹簧全启封闭式安全阀概述A42Y-C型弹簧全启封闭式安全阀适用于工作温度≤300℃空气、***、液体等介质的设备和管路上。A42Y-P型弹簧全启封闭式安全阀及A42Y-R型弹簧全启封闭式安全阀适用于工作温度≤200℃有腐蚀性的介质的设备和管路上，作为超压保护装置。连接法兰标准按JB/T……-94系列1。≥6.4MPa按JB/T……-94系列2。二、A42Y弹簧全启封闭式安全阀结构简述1、弹簧全启式安全阀具有结构简单、密封性能好、开启压力准确、排放能力大、回座压差小、调整方便等特点。2、喷嘴型阀座：阀座为位伐尔喷嘴型阀座，蒸汽流经阀座出口处时达到音速，排放系数大，阀座密封面堆焊钴铬钨硬质合金，耐磨抗冲蚀，寿命长。3、热弹性阀瓣：阀瓣设计为热弹性结构，利用其在介质压力下微小的变形，提高密封能力，克服安全阀在介质压力下临近整定压力时的前泄现象。阀瓣密封面采用***的激光淬火技术，提高了硬度、耐磨性、抗冲抗性。4、调节螺母：通过调整调节螺母，调整弹簧压缩量，使阀门能够很方便、很迅速地获得准确的整定压力。5、背压调整套：调整阀瓣背压的辅助机构，通过背压调整套调整，可获得合适的回座压差。上调时，使阀门背压降低。下调时，使阀门背压提高。三、A42Y弹簧全启封闭式安全阀安装说明1、安全阀必须垂直安装，并***好直接安装在容器或管道的接头上。接头内径应不小于安全阀的进口通径。2、安全阀的出口必须装设适当的膨胀节，以防止排放管的热膨胀给安全阀带来不应有的热应力。排放管内径应比阀门出口直径大，长度尽可能短，避免拐弯。排放管及膨胀节重量不应作用在安全阀上，应固定在建筑上。排放管的中心线与阀体的中心线间距离尽可能的短。对每台安全阀都应单独装设排放管。3、消声器的出口处要有足够的面积，防止产生背压影响阀门的排放能力。四、A42Y弹簧全启封闭式安全阀主要零部件材料NO.零件名称A42Y-C/KA42Y-C材料A42Y-P/KA42Y-P材料A42Y-R材料DA42Y-P材料1阀座2Cr13/1Cr18Ni9TiZG1Cr18Ni9TiZG1Cr18Ni12Mo2TiZG1Cr18Ni9Ti2阀体WCBZG1Cr18Ni9TiZG1Cr18Ni12Mo2TiLCB/ZG1Cr18Ni9Ti3调节圈2Cr13/1Cr18Ni9Ti1Cr18Ni9Ti1Cr18Ni12Mo2Ti1Cr18Ni9Ti4反冲盘2Cr13/1Cr18Ni9Ti1Cr18Ni9Ti1Cr18Ni12Mo2Ti1Cr18Ni9Ti5阀瓣2Cr13/1Cr18Ni9Ti1Cr18Ni9Ti1Cr18Ni12Mo2Ti1Cr18Ni9Ti6导向套2Cr13/1Cr18Ni9Ti1Cr18Ni9Ti1Cr18Ni12Mo2Ti1Cr18Ni9Ti7阀盖ZG230-450ZG230-450ZG230-450ZG1Cr18Ni9Ti8弹簧50CrVA50CrVA包覆氟塑料50CrVA包覆氟塑料50CrVA9阀杆2Cr131Cr18Ni9Ti/1Cr18Ni12Mo2Ti1Cr18Ni9Ti/1Cr18Ni12Mo2Ti1Cr18Ni9Ti10调整螺杆452Cr132Cr132Cr1311阀帽ZG200-400ZG200-400ZG200-400ZG230-450密封面材料堆焊Co基硬质合金五、A42Y弹簧全启封闭式安全阀外形尺寸和连接尺寸型号公称通径doDKgg1bff1Z-￠dDN'D1K1g3g2b1f'f1'Z1-￠d1LL1≈HA42Y-16CA42Y-16PA42Y-16RKA42Y-16CDA42Y-16C（P）201510575551624-142511585651624-1411095378251611585651624-1432140100781824-18110953783220140100781824-1840150110851834-181151003784025150110851834-18501651251002034-1812011040650321651251002034-18651851451202034-1813512045065401851451202034-18802001601352038-1816014052080502001601352038-181002201801552238-18170135525100652201801552238-181252502101852238-18195175690125802502101852238-181502852402102438-232101907801501002852402102438-231753102702402638-2325523083820012534029526526312-2325040535532030312-2630026099225015040535532030312-2630046041037530412-26350320126630022046041037530412-2640058052548536416-30370350128335025052047043534416-2650071565060844420-34500450152040028058052548536416-3050071565060844420-345004501530A42Y-25CA42Y-25PA42Y-25RKA42Y-25CDA42Y-25（P）201510575551624-142511585651624-1411095378251611585651624-1432140100781824-18110953783220140100781824-1840150110851834-181151003784025150110851834-18501651251002034-1812011040650321651251002034-18651851451202034-1813512045065401851451202238-18802001601352038-1816014052080502001601352238-181002201801552238-18170135525100652301901602438-231252502101852238-18195175690125802702201882838-261502852402102438-232101907801501003002502183038-261753102702402638-2325523083820012536031027834312-2625040535532030312-2630026099225015042537033236312-3030046041037530412-26350320126630022048543039040416-3040058052548536416-303703501283A42Y-40CA42Y-40PA42Y-40RKA42Y-40CDA42Y-40（P）201510575515516244-142511585651624-1411095378251611585586516244-1432140100781824-18110953783220140100667818244-1840150110851834-181151003784025150110768518344-18501651251002034-1812011040650321651258810020344-18651851451202034-18135120450654018514511012022348-18802001601352038-18160140520805020016012113522348-181002201801552238-18170135525100652351901501602434.58-231252502101852238-18195175690125802702201761882834.58-261502852402102438-232101907801501003002502042183034.58-261753102702402638-232552308382001253753202602823834.512-3025040535532030312-263002609922501504503853133454234.512-3430046041037530412-263503201266A42Y-64A42Y-64PA42Y-64RDA42Y-64（P）201012590516822244-182511585586516244-1496852642516140100587822244-1832140100667818244-181101002773220155110668224244-2340150110768518344-181301102894025170125769524344-23501651258810020344-1813012031950321801358810526344-2365185145110120222348-18135130389654020516011013028348-238020016012113522348-18175160493805021517012114030348-231002351901501602434.58-23175160483100652502001501683234.58-261252702201761882834.58-251951956131501003452802042403834.58-342003753202602823834.512-30280265894A42Y-100A42Y-100PA42Y-100RDA42Y-100（P）201012590516822244-182511585586516244-1496852642516140100587824244-1832140100667818244-181101002773220155110668224244-2340150110768518344-181301102894025170125769526344-2350165125810020344-1813012031950321951458811228344-266518514511012022348-18135130389653222017011013832348-268020016012113522348-18175160493804023018012114834348-261002351901501602434.58-23175160483100502652101501723834.58-301252702201761882834.58-25195195613150803552902042504634.512-342003753202602823834.512-30280265894六、A42Y弹簧全启封闭式安全阀系列型号A42Y-16CA42Y-16PA42Y-16RKA42Y-16DA42Y-16C/PA42Y-25A42Y-25PA42Y-25RKA42Y-25(P)DA42Y-25PA42Y-40A42Y-40PA42Y-40RKA42Y-40DA42Y-40PA42Y-64A42Y-64PA42Y-64RKA42Y-64DA42Y-64PA42Y-100A42Y-100PA42Y-100RKA42Y-100DA42Y-100P)