水封截止閥，水封截止閥適用于公稱壓力PN2.5～4.0Mpa，工作溫度0～425℃的火力電站回水冷凝系統(tǒng)及石油、化工要求與大氣隔離的管道上，切斷或接通介質(zhì),適用介質(zhì)為：水、油品、蒸汽和非腐蝕氣體。
 

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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                                        

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http://www.8kty.com/content/?638.html  硬密封蝶閥                                        
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http://www.2tkw.com/list/?100_1.html 對夾止回閥
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http://www.yjfmw.com/list/?135_1.html 刀型閘閥廠家

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http://www.yjzzfm.net/content/?322.html D941W電動(dòng)通風(fēng)蝶閥