安全回流阀标一阀门有限公司【安全回流阀的介绍】安全回流阀适用于液化石油气泵出口的液相出口管路上，用于超压介质的安全回流，标准回流压差大于0.5MPa时液化石油气能自动回流入罐。可调整回流压差为0.3~0.8MPa，或按用户要求确定，当泵前压力超过规定值时，阀门自动开启，并起安全回流作用，保证设备和管路的安全运行。【安全回流阀主要设计参数】设计、制造法兰连接结构长度公称通径公称压力GB/T12243JB/T79-94、GB9113-2000GB12221-89DN25~DN300mmPN1.6、2.5、4.0MPa【安全回流阀主要性能参数】公称压力壳体试验密封试验开启压力适用介质适宜温度1.62.40.9PK用户确定液化气、天然气等非腐蚀性介质-40~+80℃2.53.754.04.4【安全回流阀结构图】【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【安全回流阀主要外形尺寸】型号公称通径doDKgg1bff1Z-ødDN’D1K1g2b1f’Z1-ød1LL1≈HAH42F-16CA42F-16C201510575/55162/4-142511585651624-1411095378251611585/65162/4-1432140100781824-18110953783220140100/78182/4-1840150110851834-181151003784025150110/85183/4-18501651251002034-181201104065032165125/100203/4-18651851451202034-181351204506540185145/120203/4-18802001601352038-181601405208050200160/135203/8-181002201801552238-1817013552510065220180/155223/8-181252502101852238-1819517569012580250210/185223/8-181502852402102438-23210190780150100285240/210243/8-231753102702402638-23255230838200125340295/265263/12-2325040535532030312-26300260992250150405355/320303/12-2630046041037530412-263503201266300220460410/375304/12-2640058052548536416-303703501283350250520470/435344/16-2650071565060844420-345004501520400280580525/485364/16-3050071565060844420-345004501530AH42F-25A42F-25201510575/55162/4-142511585651624-1411095378251611585/65162/4-1432140100781824-18110953783220140100/78182/4-1840150110851834-181151003784025150110/85183/4-18501651251002034-181201104065032165125/100203/4-18651851451202034-181351204506540185145/120223/8-18802001601352038-181601405208050200160/135223/8-181002201801552238-1817013552510065230190/160243/8-231252502101852238-1819517569012580270220/188283/8-261502852402102438-23210190780150100300250/218303/8-261753102702402638-23255230838200125360310/278343/12-2625040535532030312-26300260992250150425370/332363/12-3030046041037530412-263503201266300220485430/390404/16-3040058052548536416-303703501283AH42F-40A42F-40201510525515516244-142511585651624-1411095378251611585586516244-1432140100781824-18110953783220140100667818244-1840150110851834-181151003784025150110768518344-18501651251002034-1812011040650321651258810020344-18651851451202034-18135120450654018514511012022348-18802001601352038-18160140520805020016012113522348-181002201801552238-18170135525