微阻緩閉止回閥HH44X結構特點：
HH44X微阻緩閉止回閥用于給排水管道，安裝在是水泵出口處用來防止介質逆流和消除破環性水錘，并能有效地減少閥門關閉水錘壓力，可保障安全運行，它具有閥瓣輕、開度大、節電*，流體阻力小，水錘消除機構設計新穎，密封性能穩定可靠、耐磨損、使用壽命長、運行平穩、無振動、無噪聲等特點。
微阻緩閉止回閥主要零件材質如下：
零件名稱 | 材質 |
閥體 | 鑄鐵、鑄鋼、不銹鋼 |
閥蓋 | 鑄鐵、鑄鋼、不銹鋼 |
閥瓣 | 碳鋼、不銹鋼+橡膠 |
閥桿、活塞 | 不銹鋼 |
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