止回閥
止回閥又稱止逆閥、單流閥、單dan向xiang閥fa或huo逆ni止zhi閥fa，其qi作zuo用yong是shi保bao證zheng管guan路lu中zhong的de介jie質zhi定ding向xiang流liu動dong而er不bu致zhi倒dao流liu的de功gong能neng。水shui泵beng吸xi水shui管guan的de底di閥fa也ye屬shu於yu止zhi回hui閥fa類lei。止zhi回hui閥fa屬shu於yu自zi動dong閥fa門men，應ying用yong於yu石shi油you、化工、製藥、化肥、電力行業等各種工況的管路上，適用介質為水、油品、蒸汽、酸性介質等。
