D343H硬密封蝶閥產品介紹：

   D343H硬密封蝶閥采用三偏心多層次金屬硬密封結構，被廣泛用于介質溫度≤425℃的治金、電力、石油化工、以及給排水和市政建設等工業管道上，作調節流量和載斷流體使用。 

D343H硬密封蝶閥標準規范：
設計制造標準：GB/T 12238-2008
結構長度標準：GB/T 12221-2005
連接法蘭標準：GB/T 9113
壓力溫度等級：GB/T 12224-2005

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http://www.ruibovalve.com/yekongdiefa/            液控蝶閥

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