針閥富山常規閥門系列-富山閥門官方網站
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針閥
產品詳細

        針閥是一種微調閥,其閥塞為針形,主要用作調節氣流量。微調閥要求閥口開啟逐漸變大,從關閉到開啟大能連續細微地調節。針形閥塞即能實現這種功能。針形閥塞一般用經過淬火的鋼制長針,而閥座是用錫、銅等軟質材料制成。閥針與閥座間的密封是依靠其錐面緊密配合達到的。閥針的錐度有1:50和60錐角兩種,錐表面要經過精細研磨。閥桿與閥座間的密封是靠波紋管實現的。