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(zhì)的設(shè)備和管路上，當(dāng)設(shè)備和管路內(nèi)壓力超過允許的值時(shí)，閥六自動(dòng)開啟，繼而全量排放；當(dāng)壓力降低到規(guī)定值時(shí)，閥門自動(dòng)關(guān)閉，保證設(shè)備**運(yùn)行。
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