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Safety Valve, 안전밸브 Relief Valve 2•ˆ전밸브.pdf · 2 YSF-3 Type Safety Valve(Full Bore Type) YSF-3형안전밸브(Open Bonnet Type, 전량식) 059 증기보일러 •최고사용온도가450。C이므로고온적용의불안함을제거했으며고온에서흔히발생하는스프링의
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