A27型微啟式**閥主要用途
A27H型，A28H型**閥適用于工作溫度≤200℃的蒸汽和類似非腐蝕性介質的設備和管路上，當設備和管路內壓力超過允許的值時，閥六自動開啟，繼而全量排放；當壓力降低到規定值時，閥門自動關閉，保證設備**運行。
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