球qiu閥fa設she置zhi在zai上shang遊you壓ya力li鋼gang管guan與yu水shui泵beng水shui輪lun機ji之zhi間jian
，其qi作zuo用yong是shi在zai機ji組zu出chu現xian事shi故gu情qing況kuang時shi
，動dong水shui緊jin急ji關guan閉bi，防fang止zhi事shi故gu擴kuo大da。球qiu閥fa接jie力li器qi是shi對dui球qiu閥fa進jin行xing開kai閉bi動dong作zuo的de執zhi行xing機ji構gou。