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BWA42Y型保溫波紋管背壓平衡全啟式安全閥 Insulation back pressre balanced bellows flliftype safetyvalve
BWA42型安全閥用作聚脂、乙烯及尿素等裝置，安全閥配備保溫夾套，蒸汽吹掃接頭，確保系統安全運行。 BWA42 type valve used polyester, ethylene and urea and other devices equipped wih a safety vave insulaion jacket, steam purg fiigs, ensuring he sate operation of the systerm.
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