check-valve ball seat 中文意思是什麼
check-valve ball seat
解釋
止回閥球座-
Gravity ball check valves are converted to vent valves by replacing the standard ball with a floater ball and inverting the valve at installation ? with seat up
重力球形止回閥可以變為通風閥,只需用漂浮球體更換標準球體,然後在安裝時將閥門倒置,使其閥座向上即可。
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