D73H、D373H、D673H、D973H型PN10~PN100金屬硬密封對(duì)夾蝶閥采用精密的J形彈性密封圈和三偏心多層次金屬硬密封結(jié)構(gòu),被廣泛用于介質(zhì)溫度≤400℃的治金、電力、石油化工、以及給排水和市政建設(shè)等工業(yè)管道上,作調(diào)節(jié)流量和載斷流體使用。
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