SHOWA 閥門

生鐵閘掣: Fig.3, Fig.35, Fig.35R
止回閥: Fig.10, Fig.10RB, Fig.10R
無聲止回閥: Fig.40, Fig.40RB, Fig.40R
球掣 (截止閥): Fig.34, Fig.34RB
Y隔: Fig.33, Fig.33R
對夾式雙掩止回閥: Fig.68WL, Fig.116WL
蝶掣
 
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