Flange steel Y-type disconnecting valve (Array Valve) is suitable for nominal pressure PN1.6 ~ 6.4Mpa, working temperature -29 ~ 550 ℃ petroleum, chemical, pharmaceutical, chemical fertilizer, electric power industry, and other conditions of the pipeline above, cut off or connect the medium. Applicable media are：water, oil, steam, acidic media. Operation mode: manual, pneumatic.