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快速報價系列RIEGLER壓力調節閥482.20 B貨期好
快速報價系列RIEGLER壓力調節閥482.20 B貨期好
井式電阻爐拱頂與爐底的修理與筑爐井式電阻爐拱頂時的修理和筑爐注意事項：1）預先做好圓弧木模砌筑，由楔形磚和標準磚配合砌筑而成；磚頭不允許缺少棱角，拱腳磚的斜度必須與拱頂楔形相吻合；磚頭不允許有檜，拱頂膨脹縫應留在與端墻交接處，每米5～6mm。井式電阻爐爐底的修理和筑爐注意事項：1）井式電阻爐爐底料用絕熱磚砌成花格工，在格子中間填人蛭石粉；鋪高爐底必須錯錯縫，具有金屬外殼的底襯允許雙排錯開。

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二者相差過大將導致閥內管路系統實際流量過大，從而造成閥外管路系統水力失調或導致閥內管路系統實際流量過小影響供熱效果。自力式壓差控制閥口徑的選取不同口徑的壓差控制閥控制的流量范圍不同。在選用閥門時，應根據閥門工作特性曲線將閥內管路系統設計流量取在閥門控制流量范圍的佳工作區域內偏大側較好。選取閥門口徑過小，使自力式壓差控制閥在其控制流量范圍的高端工作，極易產生噪聲。選取閥門口徑過大，使閥門在其控制流量范圍的低端工作，系統流量變化范圍過大，易造成閥外管路系統水力失調，同時也造成經濟上的浪費。