burkert 0280 B 13 FPM MS 00066735
0280帶有伺服隔膜和強制提升裝置的先導式直通閥有兩種類型,即在無流量時關閉或在無流量時打開。當作用方式 A 為關閉狀態時,芯體會在彈簧力的作用下將先導式孔眼關閉。經由一個隔膜節流孔,在隔膜上方形成介質壓力,進而關閉閥門。接通時,芯體先打開先導式孔眼。隔膜上方的關閉壓力被卸除,且閥門由介質壓力打開。為了*打開閥門,所需的差壓不能低于 0.5 bar。·若氣動閥埋設較深,操作機構及顯示盤離地面距離≥1.5m時,應設有加長桿設施,且固定穩牢,以便人們從地面上觀察及操作。也就是說,管網中的閥門啟閉操作,不宜下井作業。
burkert 0280 B 13 FPM MS 00066735
When connected, the core opens the pilot perforation. The closing pressure above the diaphragm is removed and the valve is opened by medium pressure. To fully open the valve, the required differential pressure must not be lower than 0.5 bar. · if the pneumatic valve is embedded in depth, the operating mechanism and the display disc shall be at least 1.5m from the ground, and should be equipped with a lengthening rod facility
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