一、液化石油气安全阀,液化石油气安全回流阀概述AH42F、A42F液化石油气安全阀、安全回流阀适用于工作温度在-40～80℃的液化石油气的液相出口管上，当进出口压差0.5MPa时液化石油气能自动回流入罐。二、液化石油气安全阀,液化石油气安全回流阀结构简述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。阀瓣密封面采用先进的激光淬火技术，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、液化石油气安全阀,液化石油气安全回流阀安装说明1、安全阀必须垂直安装，并最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、液化石油气安全阀,液化石油气安全回流阀主要零部件材料NO.零件名称AH42F-CA42F-C材料1阀座2Cr132阀体WCB3调节圈2Cr134反冲盘2Cr135阀瓣2Cr13+PTFE6导向套2Cr137阀盖ZG230-4508弹簧50CrVA9阀杆2Cr1310调整螺杆4511阀帽ZG200-400五、液化石油气安全阀,液化石油气安全回流阀外形尺寸和连接尺寸型号公称通径doDKgg1bff1Z-￠dDN'D1K1g2b1f'Z1-￠d1LL1≈HAH42F-16CA42F-16C201510575551624-142511585651624-1411095378251611585651624-1432140100781824-18110953783220140100781824-1840150110851834-181151003784025150110851834-18501651251002034-1812011040650321651251002034-18651851451202034-1813512045065401851451202034-18802001601352038-1816014052080502001601352038-181002201801552238-18170135525100652201801552238-181252502101852238-18195175690125802502101852238-181502852402102438-232101907801501002852402102438-231753102702402638-2325523083820012534029526526312-2325040535532030312-2630026099225015040535532030312-2630046041037530412-26350320126630022046041037530412-2640058052548536416-30370350128335025052047043534416-2650071565060844420-34500450152040028058052548536416-3050071565060844420-345004501530AH42F-25A42F-25201510575551624-142511585651624-1411095378251611585651624-1432140100781824-18110953783220140100781824-1840150110851834-181151003784025150110851834-18501651251002034-1812011040650321651251002034-18651851451202034-1813512045065401851451202238-18802001601352038-1816014052080502001601352238-181002201801552238-18170135525100652301901602438-231252502101852238-18195175690125802702201882838-261502852402102438-232101907801501003002502183038-261753102702402638-2325523083820012536031027834312-2625040535532030312-2630026099225015042537033236312-3030046041037530412-26350320126630022048543039040416-3040058052548536416-303703501283AH42F-40A42F-40201510525515516244-142511585651624-1411095378251611585586516244-1432140100781824-18110953783220140100667818244-1840150110851834-181151003784025150110768518344-18501651251002034-1812011040650321651258810020344-18651851451202034-18135120450654018514511012022348-18802001601352038-18160140520805020016012113522348-181002201801552238-18170135525100652351901501602434.58-231252502101852238-18195175690125802702201761882834.58-261502852402102438-232101907801501003002502042183034.58-261753102702402638-232552308382001253753202602823834.512-3025040535532030312-263002609922501504503853133454234.512-3430046041037530412-263503201266)