管(Guan)道(Dao)燃(Ran)气(Qi)自(Zi)闭(Bi)阀(Fa)，(?)简(Jian)称(Cheng)自(Zi)闭(Bi)阀(Fa)，(?)安(An)装(Zhuang)于(Yu)低(Di)压(Ya)燃(Ran)气(Qi)系(Xi)统(Tong)管(Guan)道(Dao)上(Shang)，(?)

当(Dang)管(Guan)道(Dao)供(Gong)气(Qi)压(Ya)力(Li)出(Chu)现(Xian)欠(Qian)压(Ya)、(?)超(Chao)压(Ya)，(?)或(Huo)停(Ting)气(Qi)时(Shi)，(?)不(Bu)用(Yong)电(Dian)或(Huo)其(Qi)它(Ta)外(Wai)部(Bu)动(Dong)力(Li)，(?)能(Neng)自(Zi)动(Dong)关(Guan)闭(Bi)并(Bing)须(Xu)手(Shou)动(Dong)开(Kai)启(Qi)的(De)装(Zhuang)置(Zhi)。(?)

安(An)装(Zhuang)在(Zai)燃(Ran)气(Qi)表(Biao)后(Hou)管(Guan)道(Dao)末(Mo)端(Duan)与(Yu)胶(Jiao)管(Guan)连(Lian)接(Jie)处(Chu)的(De)自(Zi)闭(Bi)阀(Fa)应(Ying)具(Ju)备(Bei)欠(Qian)压(Ya)，(?)超(Chao)压(Ya)，(?)失(Shi)压(Ya)关(Guan)闭(Bi)功(Gong)能(Neng)。(?)

管(Guan)道(Dao)燃(Ran)气(Qi)自(Zi)闭(Bi)阀(Fa)，(?)适(Shi)用(Yong)于(Yu)管(Guan)道(Dao)天(Tian)然(Ran)气(Qi)使(Shi)用(Yong)。(?)

欠(Qian)压(Ya)自(Zi)动(Dong)关(Guan)闭(Bi)(正(Zheng)常(Chang)供(Gong)气(Qi)压(Ya)力(Li)2kPa)

当(Dang)供(Gong)气(Qi)压(Ya)力(Li)在(Zai)(0.8±(?)0.2)kPa时(Shi)，(?)欠(Qian)压(Ya)保(Bao)护(Hu)功(Gong)能(Neng)启(Qi)动(Dong)，(?)防(Fang)止(Zhi)灶(Zao)具(Ju)回(Hui)火(Huo)。(?)

超(Chao)压(Ya)自(Zi)动(Dong)关(Guan)闭(Bi)(正(Zheng)常(Chang)供(Gong)气(Qi)压(Ya)力(Li)2kPa)

当(Dang)供(Gong)气(Qi)压(Ya)力(Li)在(Zai)(8±(?)2)kPa时(Shi)，(?)超(Chao)压(Ya)保(Bao)护(Hu)功(Gong)能(Neng)启(Qi)动(Dong) ，(?)防(Fang)止(Zhi)灶(Zao)具(Ju)离(Li)焰(Yan)(脱(Tuo)火(Huo))。(?)

过(Guo)流(Liu)自(Zi)动(Dong)关(Guan)闭(Bi)

燃(Ran)气(Qi)胶(Jiao)管(Guan)脱(Tuo)落(Luo)、(?)老(Lao)化(Hua)破(Po)损(Sun)或(Huo)被(Bei)老(Lao)鼠(Shu)咬(Yao)破(Po)等(Deng)情(Qing)况(Kuang)发(Fa)生(Sheng)时(Shi)，(?)自(Zi)闭(Bi)阀(Fa)自(Zi)动(Dong)关(Guan)闭(Bi)，(?)防(Fang)止(Zhi)燃(Ran)气(Qi)泄(Xie)漏(Lou)。(?)

户(Hu)内(Nei)管(Guan)路(Lu)气(Qi)密(Mi)性(Xing)检(Jian)测(Ce)

可(Ke)以(Yi)用(Yong)自(Zi)闭(Bi)阀(Fa)对(Dui)户(Hu)内(Nei)管(Guan)路(Lu)系(Xi)统(Tong)进(Jin)行(Xing)气(Qi)密(Mi)性(Xing)检(Jian)测(Ce)，(?)及(Ji)时(Shi)发(Fa)现(Xian)泄(Xie)漏(Lou)隐(Yin)患(Huan)。(?)

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