日立HITACHI旋啟式止回閥,葫蘆牌升降式止回閥
發布時間:2020-11-24 瀏覽次數:99
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日立HITACHI止回閥:日本日立HITACHI旋啟式止回閥是能自動阻止流體倒流的閥門。日本日立HITACHI旋啟式止回閥的閥瓣在流體壓力作用下開啟,流體從進口側流向出口側。當進口側壓力低于出口側時,閥瓣在流體壓差、本身重力等因素作用下自動關閉以防止流體倒流。
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