美國威格士VICKERS柱塞泵
柱塞泵（piston pump，plunger pump）屬于容積式泵，往復泵。柱塞泵通過柱塞在柱塞缸體中作往復運動造成柱塞缸體中密封容積的變化而產生的壓力差而使流體介質進行工作。改變柱塞的工作行程就可以控制柱塞泵流量的大小。柱塞泵是液壓和氣動傳動中重要工作部件。常見的柱塞泵分為徑向柱塞泵，軸向柱塞泵。柱塞泵柱塞往復運動總行程L是不變的，由凸輪的升程決定。柱塞每循環的供油量大小取決于供油行程,供油行程不受凸輪軸控制是可變的。供油開始時刻不隨供油行程的變化而變化。轉動柱塞可改變供油終了時刻，從而改變供油量。柱塞泵工作時，在噴油泵凸輪軸上的凸輪與柱塞彈簧的作用下，迫使柱塞作上、下往復運動，從而完成泵油任務，泵油過程可分為以下三個階段。
進油過程
當凸輪的凸起部分轉過去后，在彈簧力的作用下，柱塞向下運動，柱塞上部空間（稱為泵油室）產生真空度，當柱塞上端面把柱塞套上的進油孔打開后，充滿在油泵上體油道內的柴油經油孔進入泵油室，柱塞運動到下止點，進油結束。
供油過程
當凸輪軸轉到凸輪的凸起部分頂起滾輪體時，柱塞彈簧被壓縮，柱塞向上運動，燃油受壓，一部分燃油經油孔流回噴油泵上體油腔。當柱塞頂面遮住套筒上進油孔的上緣時，由于柱塞和套筒的配合間隙很小（0.0015-0.0025mm）使柱塞頂部的泵油室成為一個密封油腔，柱塞繼續上升，泵油室內的油壓迅速升高，泵油壓力>出油閥彈簧力+高壓油管剩余壓力時，推開出油閥，高壓柴油經出油閥進入高壓油管，通過噴油器噴入燃燒室。
回油過程
柱塞向上供油，當上行到柱塞上的斜槽（停供邊）與套筒上的回油孔相通時，泵油室低壓油路便與柱塞頭部的中孔和徑向孔及斜槽溝通，油壓驟然下降，出油閥在彈簧力的作用下迅速關閉，停止供油。此后柱塞還要上行，當凸輪的凸起部分轉過去后，在彈簧的作用下，柱塞又下行。此時便開始了下一個循環。
柱塞泵以一個柱塞為原理介紹，一個柱塞泵上有兩個單向閥，并且方向相反，柱塞向一個方向運動時缸內出現負壓，這時一個單向閥打開液體被吸入缸內，柱塞向另一個方向運動時，將液體壓縮后另一個單向閥被打開，被吸入缸內的液體被排出。這種工作方式連續運動后就形成了連續供油 。
美國威格士VICKERS柱塞泵
威格士柱塞泵的維護
威格士斜盤式軸向柱塞泵一般采用缸體轉動、端面配流的形式。缸體端面上鑲有一塊由雙金屬板與鋼配油盤組成的摩擦副，而且大多數是采用平面配流的方法，所以維修比較方便。配油盤是軸向柱塞泵的關鍵部件之一，泵工作時，一方面工作腔的高壓油把缸體推向配油盤，另一方面配油盤和缸體間的油膜壓力形成對缸體的液壓反推力使缸體背離配油盤。缸體對配油盤的設計液壓壓緊力Fn略大于配油盤對缸體的液壓反推力Ff，即Fn/Ff=1.05~1.1，使泵工作正常并保持較高的容積效率。 實際上，由于油液的污染，往往使配油盤與缸體之間產生輕微磨損。
威格士液壓柱塞泵靠氣壓供油的液壓油箱，在每次啟動機器后，必須等液壓漬箱達到使用氣壓后，才能操作機械。直軸斜盤式柱塞泵分為壓力供油型的自吸油型兩種。壓力供油型液壓泵大都采用有氣壓的油箱，也有液壓泵本身帶有補油分泵向液壓泵進油口提供壓力油的。自吸油型液壓泵的自吸油能力很強，無需外力供油。對于自吸油型柱塞泵，液壓油箱內的油液不得低于油標下限，要保持足夠數量的液壓油。液壓油的清潔度越高，液壓泵的使用壽命越長。
美國威格士VICKERS柱塞泵
VICKERS威格士PVH081柱塞泵型號:
PVH081R52AA10B252000001001AA010A   PVH81C-RF-2S-11-C25V-31
PVH081R02AA10E252014001001AA010A   PVH81C-RF-2S-11-C25VT14-31
PVH081R01AA10A230000001001AA010A   PVH81C-RF-1S-11-C23-31
PVH081R02AA10B21200000100100010A   PVH81C-RF-2S-10-C21V-31
PVH081R01AA10A230000001001AE010A   PVH81QIC-RF-1S-11-C23-31
PVH081R01AA10A230000002001AE010A   PVH81QIC-RSF-1S-11-C23-31
VICKERS威格士PVH131柱塞泵型號
PVH131L12AF30B282000001AD2AA010A   PVH131C-LAF-12D-11-C28V-31
PVH131L12AF30B252000001AD100010A   PVH131C-LAF-12S-10-C25V-31
PVH131L12AF30B252000001AD1BG010A   PVH131C-LAF-12S-10-C25V-31-159
PVH131L12AF30K250000001AD100010A   PVH131C-LAF-12S-10-EDC25-10
PVH131L12AF30A130000AG1AD1AA010A   PVH131C-LAF-12S-11-C13-31
PVH131L16AF30A250000001AD100010A   PVH131C-LAF-16S-10-C25-31
PVH131L16AF30B252000001AD100010A   PVH131C-LAF-16S-10-C25V-31
PVH131L16AF30D180006001AT1AA010A   PVH131C-LAF-16S-11-C18T6-31-CD-031
PVH131L16AF30D250004001AD1AA010A   PVH131C-LAF-16S-11-C25T4-31
PVH131L02AF30B212000001AD200010A   PVH131C-LAF-2D-10-C21V-31-036
PVH131L02AF30B212000001AD2AA010A   PVH131C-LAF-2D-11-C21V-31-036
PVH131L03AF30E272015001AD2AA010A   PVH131C-LAF-3D-11-C27VT15-31
PVH131L03AF30A250000001AD100010A   PVH131C-LAF-3S-10-C25-31
PVH131L03AF30B252000001AD100010A   PVH131C-LAF-3S-10-C25V-31
PVH131L03AF30E252004001AD1AA010A   PVH131C-LAF-3S-11-C25VT4-31
PVH131L03AF30F282014001AT1AA010A   PVH131C-LAF-3S-11-C28VT14S-31-31
PVH131L12AF30B252000001AJ200010A   PVH131C-LBF-12D-10-C25V-31
PVH131L12AF30B252000001AJ100010A   PVH131C-LBF-12S-10-C25V-31
PVH131L12AF30B252000001AY100010A   PVH131C-LBF-12S-10-C25V-31-114
PVH131L12AF30B502000001AJ1AA010A   PVH131C-LBF-12S-11-C31V-31
PVH131L02AF30B162000001AJ1AA010A   PVH131C-LBF-2S-11-C16V-31
PVH131L02AF30B252000001AJ1AA010A   PVH131C-LBF-2S-11-C25V-31
PVH131L03AF30B252000001AJ1AA010A   PVH131C-LBF-3S-11-C25V-31
PVH131L12AF30B252000001AM2AA010A   PVH131C-LCF-12D-11-C25V-31
PVH131L12AF30B482000001AA1AA010A   PVH131C-LCF-12S-11-C275V-31-CD-114
PVH131L16AF30B252000001AM100010A   PVH131C-LCF-16S-10-C25V-31
PVH131L03AF30B252000001AM1AA010A   PVH131C-LCF-3S-11-C25V-31
PVH131L12AF30A250000001002AA010A   PVH131C-LF-12D-11-C25-31
PVH131L12AF30B25200000100100010A   PVH131C-LF-12S-10-C25V-31
PVH131L12AF30B252000001001AM010A   PVH131C-LF-12S-10-C25V-31-118
PVH131L33AF30B252000001002AA010A   PVH131C-LF-13D-11-C25V-31-259
PVH131L13AF30A25000000100100010A   PVH131C-LF-13S-10-C25-31
PVH131L13AF30B25200000100100010A   PVH131C-LF-13S-10-C25V-31
PVH131L13AF30B192000AK1001AA010A   PVH131C-LF-13S-11-C19V-31-188
PVH131L13AF30B252000001001AA010A   PVH131C-LF-13S-11-C25V-31
PVH131L29AF30B25200000100100010A   PVH131C-LF-29S-10-C25V-31-046
PVH131L29AF30B25340000100100010A   PVH131C-LF-29S-10-C25V34-31-CD-046
PVH131L02AF30B21200000100200010A   PVH131C-LF-2D-10-C21V-31-046
PVH131L02AF30B252000001002AA010A   PVH131C-LF-2D-11-C25V-31
PVH131L02AF30B252000001008AA010A   PVH131C-LF-2D-11-C25V-31-214
PVH131L02AF30B25200000100100010A   PVH131C-LF-2S-10-C25V-31-046
PVH131L02AF30B252000AL1001AP010A   PVH131C-LF-2S-10-C25V-31-208
PVH131L02AF30B192000AA1001AA010A   PVH131C-LF-2S-11-C19VB-31-CD
PVH131L02AF30B252000001001AA010A   PVH131C-LF-2S-11-C25V-31-046
PVH131L02AF30B253100001001AA010A   PVH131C-LF-2S-11-C25V31-31
PVH131L02AF30B282000AR1001AT010A   PVH131C-LF-2S-11-C28VB-31-220
PVH131L02AF30B282000BK1001AT010A   PVH131C-LF-2S-11-C28VB-31-255
PVH131L03AF30B172000001002AA010A   PVH131C-LF-3D-11-C17V-31
PVH131L03AF30A25000000100100010A   PVH131C-LF-3S-10-C25-31
PVH131L03AF30B25200000100100010A   PVH131C-LF-3S-10-C25V-31
PVH131L03AF30K25000000100100010A   PVH131C-LF-3S-10-EDC25-10
PVH131L03AF30E252015001001AA010A   PVH131C-LF-3S-11-C25VT15-31
PVH131L12AJ30B252000002001AA010A   PVH131C-LSF-12S-11-C25V-31
PVH131L13AF30A25000000200100010A   PVH131C-LSF-13S-10-C25-31
PVH131L02AJ30B252000002001AA010A   PVH131C-LSF-2S-11-C25V-31
PVH131L03AF30B25200000200100010A   PVH131C-LSF-3S-10-C25V-31
PVH131L03AF30B252000002001AP010A   PVH131C-LSF-3S-10-C25V-31-164
PVH131L03AF30B252000AL2001AP010A   PVH131C-LSF-3S-10-C25V-31-208
PVH131R12AF30B202000001AD200010A   PVH131C-RAF-12D-10-C20V-31
PVH131R12AF30B252000001AD2AA010A   PVH131C-RAF-12D-11-C25V-31
PVH131R12AF30B252000AA1AD2AA010A   PVH131C-RAF-12D-11-C25VB-31
PVH131R12AF30E252013001AD2AA010A   PVH131C-RAF-12D-11-C25VT13-31
PVH131R12AF30B332000001AD2AA010A   PVH131C-RAF-12D-11-C33V-31-039
PVH131R12AF30B252000001AD100010A   PVH131C-RAF-12S-10-C25V-31
PVH131R16AF30D250004001AD2AA010A   PVH131C-RAF-16D-11-C25T4-31
PVH131R16AF30A250000001AD100010A   PVH131C-RAF-16S-10-C25-31
PVH131R16AF30B252000001AD100010A   PVH131C-RAF-16S-10-C25V-31
PVH131R16AF30A070000001AD100010A   PVH131C-RAF-16S-10-CM7-31
PVH131R16AF30D250015001AD1AA010A   PVH131C-RAF-16S-11-C25T15-31
PVH131R16AF30C250004001AD1AA010A   PVH131C-RAF-16S-11-C25T4S-31
PVH131R16AF30B252000001AD1AN010A   PVH131C-RAF-16S-11-C25V-31-115
PVH131R16AF30E252004001AD1AA010A   PVH131C-RAF-16S-11-C25VT4-31
PVH131R02AF30B142000001AD200010A   PVH131C-RAF-2D-10-C14V-31-036
PVH131R02AF30A250000001AT1AA010A   PVH131C-RAF-2S-11-C25-31-196
PVH131R02AF30B252000001AD1AA010A   PVH131C-RAF-2S-11-C25V-31-036
PVH131R03AF30B252000001AD200010A   PVH131C-RAF-3D-10-C25V-31
PVH131R03AF30F282014001AD2AA010A   PVH131C-RAF-3D-11-C28VT14S-31
PVH131R03AF30A250000001AD100010A   PVH131C-RAF-3S-10-C25-31
PVH131R03AF30B252000001AD100010A   PVH131C-RAF-3S-10-C25V-31
PVH131R03AF30B252000001AD1AP010A   PVH131C-RAF-3S-10-C25V-31-164
PVH131R03AF30B252000001AD1AP010A   PVH131C-RAF-3S-10-C25V-31-166
PVH131R03AF30B252000AL1AD1AP010A   PVH131C-RAF-3S-10-C25V-31-208
PVH131R03AF30A070000001AD100010A   PVH131C-RAF-3S-10-CM7-31
PVH131R03AF30A250000001AD1AA010A   PVH131C-RAF-3S-11-C25-31
PVH131R03AF30E252008001AD1AA010A   PVH131C-RAF-3S-11-C25VT8-31
PVH131R12AF30B252000001AJ100010A   PVH131C-RBF-12S-10-C25V-31
PVH131R16AF30B211700001AY100010A   PVH131C-RBF-16S-10-C21V17-31-070
PVH131R16AF30E252012001AJ1AA010A   PVH131C-RBF-16S-11-C25VT12-31-CD
PVH131R03AF30B252000001AJ1AA010A   PVH131C-RBF-3S-11-C25V-31
PVH131R03AF30E252012001AJ1AA010A   PVH131C-RBF-3S-11-C25VT12-31-CD
VICKERS威格士PVH131柱塞泵型號
PVH131R13AF30A25000000100100010A   PVH131C-RF-13S-10-C25-31
PVH131R13AF30B25200000100100010A   PVH131C-RF-13S-10-C25V-31
PVH131R13AF30A250000001001AA010A   PVH131C-RF-13S-11-C25-31
PVH131R13AF30B252000001001AA010A   PVH131C-RF-13S-11-C25V-31
PVH131R13AF30A25000000200100010A   PVH131C-RSF-13S-10-C25-31
PVH131R13AF30B25200000200100010A   PVH131C-RSF-13S-10-C25V-31
PVH131R13AF30A250000001001AB010A   PVH131QIC-RF-13S-10-C25-31
PVH131R13AF30B252000001001AB010A   PVH131QIC-RF-13S-10-C25V-31
PVH131R13AF30A250000001001AE010A   PVH131QIC-RF-13S-11-C25-31
PVH131R13AF30B252000001001AE010A   PVH131QIC-RF-13S-11-C25V-31
PVH131R13AG30A250000001001AB010A   PVH131QIC-RM-13S-10-C25-31
PVH131R13AG30D250004001001AE010A   PVH131QIC-RM-13S-11-C25T4-31
PVH131R13AF30A250000002001AB010A   PVH131QIC-RSF-13S-10-C25-31
PVH131R13AF30B252000002001AB010A   PVH131QIC-RSF-13S-10-C25V-31
PVH131R13AF30A250000002001AE010A   PVH131QIC-RSF-13S-11-C25-31
VICKERS威格士PVH57柱塞泵型號
PVH057R01AA10A25000000100100010A   PVH57C-RF-1S-10-C25-31
PVH057R01AA10B25200000100100010A   PVH57C-RF-1S-10-C25V-31
PVH057R02AA10A25000000100100010A   PVH57C-RF-2S-10-C25-31
PVH057R02AA10B25200000100100010A   PVH57C-RF-2S-10-C25V-31
PVH057R02AA10A250000001001AA010A   PVH57C-RF-2S-11-C25-31
PVH057R02AA10B252000001001AA010A   PVH57C-RF-2S-11-C25V-31
PVH057R01AB10B252000001001AA010A   PVH57C-RM-1S-11-C25V-31
PVH057R02AB10B252000001001AA010A   PVH57C-RM-2S-11-C25V-31
PVH057R01AA10A25000000200100010A   PVH57C-RSF-1S-10-C25-31
PVH057R01AA10B25200000200100010A   PVH57C-RSF-1S-10-C25V-31
PVH057R02AA10A25000000200100010A   PVH57C-RSF-2S-10-C25-31
PVH057R02AA10B252000002001AA010A   PVH57C-RSF-2S-11-C25V-31
PVH057R01AA10A250000001001AB010A   PVH57QIC-RF-1S-10-C25-31
PVH057R01AA10B252000001001AB010A   PVH57QIC-RF-1S-10-C25V-31
PVH057R01AA10A250000001001AF010A   PVH57QIC-RF-1S-11-C25-31
PVH057R01AA10B252000001001AE010A   PVH57QIC-RF-1S-11-C25V-31
PVH057R02AA10A250000001001AB010A   PVH57QIC-RF-2S-10-C25-31
PVH057R02AA10B252000001001AB010A   PVH57QIC-RF-2S-10-C25V-31
PVH057R02AA10A250000001001AF010A   PVH57QIC-RF-2S-11-C25-31
PVH057R02AA10A250000001001AE010A   PVH57QIC-RF-2S-11-C25-31
PVH057R02AA10B252000001001AF010A   PVH57QIC-RF-2S-11-C25V-31
PVH057R02AA10B252000001001AE010A   PVH57QIC-RF-2S-11-C25V-31
PVH057R01AB10A250000001001AB010A   PVH57QIC-RM-1S-10-C25-31
PVH057R01AA10A250000002001AB010A   PVH57QIC-RSF-1S-10-C25-31
PVH057R01AA10B252000002001AB010A   PVH57QIC-RSF-1S-10-C25V-31
PVH057R01AA10A250000002001AE010A   PVH57QIC-RSF-1S-11-C25-31
PVH057R02AA10A250000002001AB010A   PVH57QIC-RSF-2S-10-C25-31
PVH057R01AB10A250000002001AE010A   PVH57QIC-RSM-1S-11-C25-31
VICKERS威格士PVH63柱塞泵型號.
PVH063R01AA10H002000AW1001AB010A   PVH63QIC-RF-1S-10-IC-31
PVH063R01AA10D250008001001AE010A   PVH63QIC-RF-1S-11-C25T8-31
PVH063R51AA10AAF010A   PVH63QIC-RF-1S-11-CM7-31
PVH063R01AB10A250000001001AE010A   PVH63QIC-RM-1S-11-C25-31
PVH063R01AA10AAE010A   PVH63QIC-RSF-1S-11-CM7-31
PVH063R02AA10AAE010A   PVH63QIC-RSF-2S-11-CM7-31