The utility model is a kind of modularity flow valve group, one circuit board and an air valve shell, a valve rod and the stepper motor for being assembled what circuit board, valve rod system movably places what air valve shell and what is pierced by the driving end of circuit board in conjunction with a valve rod gear is equipped with, and the motor drive shaft that stepper motor what is pierced by circuit board, which combines, is equipped with a driving gear being meshed with valve rod gear. Air valve shell, valve rod and stepper motor are assembled what circuit board and allow flow valve group modularity by the utility model, flow valve group the space occupied volume can be reduced, the arrangement in what space is facilitated to utilize, and it is easy for assembly quick, efficiently solve the technical issues of unfavorable what arrangement space utilization and unfavorable what present in existing flow valve group assemble.本新型為一種模組化流量閥組，其一電路板及組裝結合於電路板的一氣閥殼、一閥桿和一步進馬達，閥桿係可移動地穿置於氣閥殼且於穿出電路板的驅動端結合設有一閥桿齒輪，步進馬達於穿出電路板的馬達軸結合設有一與閥桿齒輪相嚙合的驅動齒輪。本新型將氣閥殼、閥桿及步進馬達組裝於電路板而讓流量閥組模組化，能夠縮減流量閥組佔用的空間體積，方便於空間的安排利用，並且組裝簡便快速，有效地解決現有流量閥組所存在不利於空間安排利用及不利於組裝的技術問題。
