偏心異徑橡膠接頭在 管道-泵安裝偏心大小頭：是用來防氣蝕的，且泵進口的大小頭一般應該頂平安裝，這是防止管道內氣相在泵口積聚，形成大氣泡進入泵腔，損壞泵。只有一種情況下才可以底平安裝。那就是大小頭后面直接接向上彎曲的彎頭。這種情況下氣相不可能積聚。泵-管道安裝同心異徑接頭：泵出口DN與外管道系統存在差異，用于同心異徑大小頭，可實現尺寸不同的兩根管子的直線連接，實現管道變徑的管件。
Eccentric different-diameter rubber joint in the pipeline and the pump mounting eccentric size head: is used to prevent cavitation erosion, and the size of the import pump head should generally flat roof installation, this is to prevent pipe gas phase in the pump inlet accumulation, form big bubbles into the pump chamber, damage to the pump. There is only one case can install the flat. That is size head directly meet up behind the elbow bend. This case of gas phase may not accumulation. Pump-pipe installation concentric different-diameter connector: pump export DN and pipe system the difference, for all different diameter size head, can realize the different size of two pipe line connection, realize the pipe diameter changes the pipe pieces.
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