原裝YUKEN日本油研雙聯葉片泵PV2R12-8-47-F-REAA-40葉片泵轉子旋轉時，葉片在離心力和壓力油的作用下，尖部緊貼在定子內表面上。這樣兩個葉片與轉子和定子內表面所構成的工作容積，先由小到大吸油后再由大到小排油，葉片旋轉一周時，完成兩次吸油與排油。 　
泵由轉子1、定子2、葉片3、配油盤和端蓋等部件所組成。定子的內表面是圓柱形孔。轉子和定子之間存在著偏心。葉片在轉子的槽內可靈活滑動，在轉子轉動時的離心力以及通入葉片根部壓力油的作用下，葉片頂部貼緊在定子內表面上，于是兩相鄰葉片、配油盤、定子和轉子間便形成了一個個密封的工作腔。當轉子按逆時針方向旋轉時，圖右側的葉片向外伸出，密封工作腔容積逐漸增大，產生真空，于是通過吸油口6和配油盤5上窗口將油吸入。而在圖的左側。葉片往里縮進，密封腔的容積逐漸縮小，密封腔中的油液經配油盤另一窗口和壓油口1被壓出而輸出到系統中去。這種泵在轉子轉一轉過程中，吸油壓油各一次，故稱單作用泵。轉子受到徑向液壓不平衡作用力，故又稱非平衡式泵，其軸承負載較大。改變定子和轉子間的偏心量，便可改變泵的排量，故這種泵都是變量泵。
Yuken油研葉片泵PV2R12雙聯泵系列本型泵由同一軸驅動的兩個PV2R型單泵并聯組裝在同一殼體內而成。
輸出流量可以輸向兩個獨立的回路。型說明
PV2R12 - 14-33- F- R A A A - 4222
PV2R12----序列
14-----------小流量泵 公稱排量（cm/rev）
33---------大流量泵 公稱排量（cm/rev）
F-----------安裝方式   L=底座安裝型   F=法蘭安裝型
R----------旋轉方向   R=順時針方面（標準） L=逆時針方向
A----------小流量泵 輸出口位置    A=上（標準）
A----------大流量泵 輸出口位置    A=上（標準）
A----------吸入口位置    A=上（標準）
4222-----設計
原裝日本油研雙聯葉片泵PV2R12-8-47-F-REAA-40常用型
PV2R12-6-26-L-RAAA-4222         PV2R12-6-26-F-RAAA-4222               PV2R12-6-26-L-LAAA-4222             
PV2R12-6-26-F-LAAA-4222         PV2R12-8-26-L-RAAA-4222               PV2R12-8-26-F-RAAA-4222             
PV2R12-8-26-L-LAAA-4222         PV2R12-8-26-F-LAAA-4222                PV2R12-10-26-L-RAAA-4222
PV2R12-10-26-F-RAAA-4222        PV2R12-10-26-L-LAAA-4222             PV2R12-10-26-F-LAAA-4222
PV2R12-12-26-L-RAAA-4222        PV2R12-12-26-F-RAAA-4222             PV2R12-12-26-L-LAAA-4222            
PV2R12-12-26-F-LAAA-4222        PV2R12-14-26-L-RAAA-4222             PV2R12-14-26-F-RAAA-4222
PV2R12-14-26-L-LAAA-4222        PV2R12-14-26-F-LAAA-4222              PV2R12-17-26-L-RAAA-4222            
PV2R12-17-26-F-RAAA-4222        PV2R12-17-26-L-LAAA-4222             PV2R12-17-26-F-LAAA-4222
PV2R12-19-26-L-RAAA-4222        PV2R12-19-26-F-RAAA-4222             PV2R12-19-26-L-LAAA-4222           
PV2R12-19-26-F-LAAA-4222        PV2R12-23-26-L-RAAA-4222             PV2R12-23-26-F-RAAA-4222           
PV2R12-23-26-L-LAAA-4222        PV2R12-23-26-F-LAAA-4222              PV2R12-25-26-L-RAAA-4222           
PV2R12-25-26-F-RAAA-4222        PV2R12-25-26-L-LAAA-4222             PV2R12-25-26-F-LAAA-4222
PV2R12-31-26-L-RAAA-4222        PV2R12-31-26-F-RAAA-4222             PV2R12-31-26-L-LAAA-4222           
PV2R12-31-26-F-LAAA-4222        PV2R12-6-33-L-RAAA-4222                PV2R12-6-33-F-RAAA-4222              
PV2R12-6-33-L-LAAA-4222         PV2R12-6-33-F-LAAA-4222                PV2R12-8-33-L-RAAA-4222             
PV2R12-8-33-F-RAAA-4222         PV2R12-8-33-L-LAAA-4222               PV2R12-8-33-F-LAAA-4222
PV2R12-10-33-L-RAAA-4222        PV2R12-10-33-F-RAAA-4222             PV2R12-10-33-L-LAAA-4222            
PV2R12-10-33-F-LAAA-4222        PV2R12-12-33-L-RAAA-4222             PV2R12-12-33-F-RAAA-4222            
PV2R12-12-33-L-LAAA-4222        PV2R12-12-33-F-LAAA-4222               PV2R12-14-33-L-RAAA-4222           
PV2R12-14-33-F-RAAA-4222        PV2R12-14-33-L-LAAA-4222             PV2R12-14-33-F-LAAA-4222
PV2R12-17-33-L-RAAA-4222        PV2R12-17-33-F-RAAA-4222             PV2R12-17-33-L-LAAA-4222
PV2R12-17-33-F-LAAA-4222        PV2R12-19-33-L-RAAA-4222             PV2R12-19-33-F-RAAA-4222           
PV2R12-19-33-L-LAAA-4222        PV2R12-19-33-F-LAAA-4222              PV2R12-23-33-L-RAAA-4222           
PV2R12-23-33-F-RAAA-4222        PV2R12-23-33-L-LAAA-4222             PV2R12-23-33-F-LAAA-4222
PV2R12-25-33-L-RAAA-4222        PV2R12-25-33-F-RAAA-4222             PV2R12-25-33-L-LAAA-4222            
PV2R12-25-33-F-LAAA-4222        PV2R12-31-33-L-RAAA-4222             PV2R12-31-33-F-RAAA-4222            
PV2R12-31-33-L-LAAA-4222        PV2R12-31-33-F-LAAA-4222              PV2R12-6-41-L-RAAA-4222             
PV2R12-6-41-F-RAAA-4222         PV2R12-6-41-L-LAAA-4222                PV2R12-6-41-F-LAAA-4222
PV2R12-8-41-L-RAAA-4222         PV2R12-8-41-F-RAAA-4222               PV2R12-8-41-L-LAAA-4222             
PV2R12-8-41-F-LAAA-4222         PV2R12-10-41-L-RAAA-4222             PV2R12-10-41-F-RAAA-4222            
PV2R12-10-41-L-LAAA-4222        PV2R12-10-41-F-LAAA-4222              PV2R12-12-41-L-RAAA-4222           
PV2R12-12-41-F-RAAA-4222        PV2R12-12-41-L-LAAA-4222             PV2R12-12-41-F-LAAA-4222
PV2R12-14-41-L-RAAA-4222        PV2R12-14-41-F-RAAA-4222             PV2R12-14-41-L-LAAA-4222            
PV2R12-14-41-F-LAAA-4222        PV2R12-17-41-L-RAAA-4222             PV2R12-17-41-F-RAAA-4222           
PV2R12-17-41-L-LAAA-4222        PV2R12-17-41-F-LAAA-4222              PV2R12-19-41-L-RAAA-4222            
PV2R12-19-41-F-RAAA-4222        PV2R12-19-41-L-LAAA-4222             PV2R12-19-41-F-LAAA-4222
PV2R12-23-41-L-RAAA-4222        PV2R12-23-41-F-RAAA-4222             PV2R12-23-41-L-LAAA-4222            
PV2R12-23-41-F-LAAA-4222        PV2R12-25-41-L-RAAA-4222             PV2R12-25-41-F-RAAA-4222           
PV2R12-25-41-L-LAAA-4222        PV2R12-25-41-F-LAAA-4222              PV2R12-31-41-L-RAAA-4222           
PV2R12-31-41-F-RAAA-4222        PV2R12-31-41-L-LAAA-4222             PV2R12-31-41-F-LAAA-4222
PV2R12-6-47-L-RAAA-4222         PV2R12-6-47-F-RAAA-4222                PV2R12-6-47-L-LAAA-4222             
PV2R12-6-47-F-LAAA-4222         PV2R12-8-47-L-RAAA-4222               PV2R12-8-47-F-RAAA-4222              
PV2R12-8-47-L-LAAA-4222         PV2R12-8-47-F-LAAA-4222                 PV2R12-10-47-L-RAAA-4222            
PV2R12-10-47-F-RAAA-4222        PV2R12-10-47-L-LAAA-4222             PV2R12-10-47-F-LAAA-4222
PV2R12-12-47-L-RAAA-4222        PV2R12-12-47-F-RAAA-4222             PV2R12-12-47-L-LAAA-4222            
PV2R12-12-47-F-LAAA-4222        PV2R12-14-47-L-RAAA-4222             PV2R12-14-47-F-RAAA-4222            
PV2R12-14-47-L-LAAA-4222        PV2R12-14-47-F-LAAA-4222              PV2R12-17-47-L-RAAA-4222            
PV2R12-17-47-F-RAAA-4222        PV2R12-17-47-L-LAAA-4222             PV2R12-17-47-F-LAAA-4222
PV2R12-19-47-L-RAAA-4222        PV2R12-19-47-F-RAAA-4222             PV2R12-19-47-L-LAAA-4222           
PV2R12-19-47-F-LAAA-4222        PV2R12-23-47-L-RAAA-4222             PV2R12-23-47-F-RAAA-4222            
PV2R12-23-47-L-LAAA-4222        PV2R12-23-47-F-LAAA-4222              PV2R12-25-47-L-RAAA-4222           
PV2R12-25-47-F-RAAA-4222        PV2R12-25-47-L-LAAA-4222             PV2R12-25-47-F-LAAA-4222
PV2R12-31-47-L-RAAA-4222        PV2R12-31-47-F-RAAA-4222             PV2R12-31-47-L-LAAA-4222            
PV2R12-31-47-F-LAAA-4222        PV2R12-6-53-L-RAAA-4222                PV2R12-6-53-F-RAAA-4222               
PV2R12-6-53-L-LAAA-4222         PV2R12-6-53-F-LAAA-4222                 PV2R12-8-53-L-RAAA-4222 
我堅持“質優價廉、誠信*、服務至上”的原則，愿為廣大客戶的服務。zui后，多謝各位多來對我司的支持與鼓勵，本司全體同仁將繼續努力，不斷提高產品質量和服務質量，滿足客戶的需求。我們真誠期待著您的加入，希望與您長期合作，共謀發展。原裝日本油研雙聯葉片泵PV2R12-8-47-F-REAA-40