止回閥又稱單向閥或逆止閥，其作用是防止管路中的介質倒流。水泵吸水關的底閥也屬于止回閥類。啟閉件靠介質流動和力量自行開啟或關閉，以防止介質倒流的閥門叫止回閥。止回閥屬于自動閥類，主要用于介質單向流動的管道上，只允許介質向一個方向流動，以防止發生事故。
http://www.0577v.net/ 球閥
http://www.0577v.net/prod.asp?cid1=46 法蘭球閥
http://www.0577v.net/prod.asp?cid1=47 氣動蝶閥
http://www.0577v.net/prod.asp?cid1=52 法蘭閘閥
http://www.0577v.net/prod.asp?cid1=53 法蘭截止閥
http://www.0577v.net/prod.asp?cid1=54 升降式止回閥
http://www.gyfmw.com/ 高壓閥門
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http://www.gyfmw.com/content/?284.html J41H法蘭高壓截止閥
http://www.gyfmw.com/content/?289.html H44H鑄鋼高壓止回閥
3、蝶閥
http://www.8kty.com/ 蝶閥生產廠家
http://www.8kty.com/list/?98_1.html 美標蝶閥
http://www.8kty.com/content/?638.html 硬密封蝶閥
http://www.8kty.com/content/?611.html 智能型電動蝶閥
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http://www.2tkw.com/ 蝶閥廠家
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http://www.2tkw.com/list/?6_1.html 楔式閘閥
http://www.2tkw.com/content/?488.html D971X電動軟密封蝶閥
http://www.2tkw.com/list/?7_1.html 手動截止閥
http://www.2tkw.com/content/?522.html D943H國標電動蝶閥
http://www.2tkw.com/list/?100_1.html 對夾止回閥
http://www.2tkw.com/content/?478.html DS343H雙向壓蝶閥
http://www.2tkw.com/list/?99_1.html 偏心球閥
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http://www.2tkw.com/list/?98_1.html 硬密封蝶閥
http://www.2tkw.com/content/?490.html D363H焊接式蝶閥
http://www.zzfmzz.org/ 球閥廠家
http://www.zzfmzz.org/content/?711.html Q647F氣動固定球閥
http://www.zzfmzz.org/list/?6_1.html 閘閥廠家
http://www.zzfmzz.org/content/?698.html 氣動不銹鋼法蘭球閥
http://www.zzfmzz.org/list/?7_1.html 氣動球閥
http://www.zzfmzz.org/content/?658.html Q941W電動不銹鋼球閥
http://www.zzfmzz.org/list/?20_1.html 蝶閥
http://www.zzfmzz.org/content/?657.html PQ941F電動偏心半球閥
http://www.zzfmzz.org/list/?111_1.html 截止閥廠家
http://www.zzfmzz.org/content/?689.html 鍛鋼硬密封浮動球閥
http://www.zzfmzz.org/list/?112_1.html 止回閥廠家
http://www.zzfmzz.org/content/?710.html Q44F三通球閥
http://www.yjfmw.com/ 刀型閘閥
http://www.yjfmw.com/list/?137_1.html 鑄鋼法蘭蝶閥
http://www.yjfmw.com/list/?136_1.html 鑄鋼浮動球閥
http://www.yjfmw.com/list/?138_1.html 鑄鋼法蘭閘閥
http://www.yjfmw.com/list/?6_1.html 電動盲板閥
http://www.yjfmw.com/list/?120_1.html 眼鏡閥
http://www.yjfmw.com/list/?139_1.html 鑄鋼法蘭截止閥
http://www.yjfmw.com/list/?20_1.html 渦輪通風碟閥
http://www.yjfmw.com/list/?135_1.html 刀型閘閥廠家
http://www.yjzzfm.net/ 通風碟閥
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http://www.yjzzfm.net/list/?7_1.html 插板閥
http://www.yjzzfm.net/list/?113_1.html 盲板閥
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http://www.yjzzfm.net/content/?332.html 氣動扇形眼鏡閥
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http://www.yjzzfm.net/content/?326.html 敞開式電動插板閥
http://www.yjzzfm.net/list/?20_1.html 放散閥
http://www.yjzzfm.net/content/?337.html 均壓放散閥
http://www.yjzzfm.net/list/?108_1.html 切換閥
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http://www.yjzzfm.net/content/?325.html Q947F電動防爆球閥
http://www.yjzzfm.net/list/?114_1.html 物料閥
http://www.yjzzfm.net/list/?113_1.html 盲板閥
http://www.yjzzfm.net/content/?321.html 渦輪式扇形盲板閥
http://www.yjzzfm.net/content/?320.html 電動扇形盲板閥
http://www.yjzzfm.net/content/?319.html 手動扇形盲板閥
http://www.yjzzfm.net/list/?112_1.html 翻板閥
http://www.yjzzfm.net/list/?111_1.html 通風碟閥
http://www.yjzzfm.net/content/?322.html D941W電動通風蝶閥
