日立HITACHI旋启式止回阀，葫芦牌升降式止回阀
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日立HITACHI旋启式止回阀，葫芦牌升降式止回阀
详细信息 日立HITACHI止回阀：日本日立HITACHI旋启式止回阀nclick="null;if（arg1.onmousemove）arg1.onmousemove=null;if（arg1.onmouseover）arg1.onmouseover=null;if（arg1.ondblclick）arg1.ondblclick=null;if（arg1.onmouseenter）arg1.onmouseenter=null;if（arg1.onmouseleave）arg1.onmouseleave=null;return" result;}?="" style="margin: 0px; padding: 0px; color: rgb(102, 102, 102); font-family: 微软雅黑, Arial; white-space: normal; background-color: rgb(255, 255, 255); font-size: larger;">nclick="null;if（arg1.onmousemove）arg1.onmousemove=null;if（arg1.onmouseover）arg1.onmouseover=null;if（arg1.ondblclick）arg1.ondblclick=null;if（arg1.onmouseenter）arg1.onmouseenter=null;if（arg1.onmouseleave）arg1.onmouseleave=null;return" result;}?="" style="margin: 0px; padding: 0px; color: rgb(0, 0, 0);">是能自动阻止流体倒流的阀门。日本日立HITACHI旋启式止回阀的阀瓣在流体压力作用下开启，流体从进口侧流向出口侧。当进口侧压力低于出口侧时，阀瓣在流体压差、本身重力等因素作用下自动关闭以防止流体倒流。
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