P1V-S020A0035但在打開或切斷油路的瞬間，系統(tǒng)中會產生相當大的沖擊，這種沖擊會極大影響液壓系統(tǒng)中液壓元件和密封件的使用壽命。為了減小及至消除由此引起的液壓沖擊，*簡單的辦法是在該電液閥下面疊加一個P口節(jié)流閥或進油節(jié)流式雙單向節(jié)流閥、出油節(jié)流式雙單向節(jié)流閥，以延長閥芯的換向及復位時間，從而到降低液壓沖擊的目的。下面就以彈簧復位型PV092R1K1T1NKLA
PV092R1K1T1NULZ
PV092R1K4T1NFHS
PV092R1K4T1NMMC
PV092R1K8L3NFWS+PV092R1L8T1NFWS
PV092R1K8T1NFWS
PV092R1L1L3WTCC
PV092R1L1T1WTCC
PV102R1EC02
PV140R1K1T1NFHS
PV140R1K1T1NFR1
PV140R1K1T1NFWS
PV140R1K4T1NFHS
PV140R1K8T1NFWS
PV152R1E002
PV180R1K1S1NFWS
PV180R1K1T1N001X5899
PV180R1K1T1NFWS
PV180R1K1T1NMFC
PV180R1K1T1NULC
PV180R1K1T1VMMC
PV180R1K8T1NFWSDN65DN32G1
PV180R9K1AYNUPG
PV180R9K1T1NFFC4211X5800
PV180R9K1T1NFWS
PV202R1EC02
派克柱塞泵PV270R1K1T1NFWS現(xiàn)貨
派克柱塞泵PV270R1K1T1NMMC現(xiàn)貨
PV270R1K1L3VFHSX5830
PV270R1K1T1NFHS
PV270R1K1T1NFRZ
PV270R1K1T1NFWS
PV270R1K1T1VFRZ+PVACZ2VS05+D1VW6FVJW
PV270R1K1T1VZLE
PV270R1K1T1WFHS
PV270R1K1T1WMMC
PV270R1K8T1NFWS 
PV270R9K1T1NUPG
PV270R9K1T1WFWSK0027
PV270R9L1L3N2CCK0006X588
PAVC100R4222
PAVC65R4213
PAVC65R42HM13
PAVC38R4216
PAVC1003R422
PGP511A0190CA1H2NL2L1B1B1
派克丹尼遜葉片泵T6CCMW B22 B22 2R11 D100 024-44332-0
派克尼遜柱塞泵 PV152RIDC00 升級型號是PV152RIEC00
派克電磁閥D1MW2ENJW75、、RS25M17S4SN1JW 、PRDM2PP06SVG、CPOM4DDHTV、D31DW004C2NJW9
派克比例閥D91FBE02HC4NF00、D111FHB32L2NE00、D91FTE01HC4NF00、D41FHB31F2NB00、D41FHB63C4NB00
D3FTE01SK0NF00 升級為D3FBE01SKONF00
PV016R9K1T1NMMC、PV016R9K1T1NMMCK0075
PVT29-2R1D-C04-S00替代型號PV092R1K1T1NMMC
派克尼遜柱塞泵PV15-2R10-C02停產了升級為PV15-2R1E-C02
派克尼遜柱塞泵PV29-2R5D-C00 CODE:029-09941-5替代型號PV063R1K1T1NMMC
PV063R1K1T1NMMC+PVBG3B=PV063R1K1B1NMMC 
PV080R1K1T1NMMC+PVBG3B=PV080R1K1B1NMMC
PV046R1K8T1NFWS 升級型號PV046R1K8T1NMMC
PV063R1K8T1NFWS 升級型號PV063R1K8T1NMMC
PV016R1K1T1NFRC 新號PV016R1K1T1NMRC 用PV016R1K1T1NMMC把老泵上面的控制器拆下來裝上去是可以用的
PV270R9L1L3N2CCX5888+PV092R9L1T1NFFP、PV270R1K8T1NFWS
PV063R1R1B1NFHS 升級型號PV063R1R1B1NMMC
PV032R1K1NFPR 升級型號PV032R1K1T1NFPD
PV080R1K1N1FPR 升級型號PV080R1K1T1NFPR
PVP2336B9R29A421替代PVT102R1EC04AB0
PVP1636B8R212 替代型號如下PVT61R1EC04S00
PV080R1K1B1NFHS 升級型號PV080R1K1B1NMMC
PV092R1K1T1NFFC 新號PV092R1K1T1NMFC
029-81417-0 PVT102R1DC04AB0 升級型號PV102R1EC00
、三位四通中封式電液壓換向閥為例、對該三種疊加節(jié)流方式作簡要說明。
一、疊加一個P口可調節(jié)流閥：控制油先通過疊加可調節(jié)流閥、到達電磁先導閥的P口，通過電磁先導閥的換向及調整節(jié)流閥的開度，來實現(xiàn)主閥芯的換向延時，從而達到降低主油路與執(zhí)行元件接通時的換向沖擊。DRE10-5X/50YG24K4V
DRE10-5X/50YG24NK4M
DRE10-5X/50YMG24K4M
DRE10-5X/50YMG24K4V
DRE20-5X/100YG24K4M
DRE20-5X/100YG24K4V
DRE20-5X/100YG24NK4M
DRE20-5X/100YMG24K4M
DRE20-5X/100YMG24NK4M
DRE20-5X/200YG24K4M
DRE20-5X/200YG24K4V
DRE20-5X/200YG24NK4M
DRE20-5X/200YG24NK4V
DRE20-5X/200YMG24K4M
DRE20-5X/200YMG24NK4M
DRE20-5X/315YG24K4M
DRE20-5X/315YG24NK4M
DRE20-5X/315YG24NK4V
DRE20-5X/315YMG24K4M
DRE20-5X/315YMG24K4V
DRE20-5X/50YG24K4M
DRE20-5X/50YMG24K4M
DRE20-5X/50YMG24NK4M
DRE30-3X/200Y
DRE30-3X/200YM
DRE30-3X/200YN
DRE30-3X/315YM
DRE30-4X/100YG24K4V
DRE30-4X/100YMG24K4M
DRE30-4X/100YMG24NK4M
DRE30-4X/200YG24K4M
DRE30-4X/200YG24K4V
DRE30-4X/200YG24NK4M
DRE30-4X/200YMG24K4M
DRE30-4X/200YMG24K4M-171
DRE30-4X/315YG24K4M
DRE30-4X/315YMG24K4M
DRE30-4X/315YMG24K4V
DRE4K-3X/18G12-14K4M
DRE4K-3X/18G12-14NK4M
DRE4K-3X/18G12-22NK4M
DRE4K-3X/18G24-10K4M
DRE4K-3X/18G24-10NK4M
DRE4K-3X/18G24-10NK4M-10
DRE4K-3X/30G12-22K4M
DRE4K-3X/30G12-22K4V
DRE4K-3X/30G12-22NK4M
DRE4K-3X/30G24-10JZ2V
DRE4K-3X/30G24-10K4M
DRE4K-3X/30G24-10K4V
DRE4K-3X/30G24-10NK4M
DRE4K-3X/30G24-10NK4V
DRE4K-3X/45G24-10K4M
DRE4K-3X/45G24-10NK4M
DREM10-5X/100YG24K4M
DREM10-5X/100YG24K4V
DREM10-5X/100YG24NK4M
DREM10-5X/100YMG24K4M
DREM10-5X/100YMG24K4V
DREM10-5X/100YMG24NK4M
DREM10-5X/200YG24K4M
DREM10-5X/200YG24K4V
DREM10-5X/200YG24NK4M
DREM10-5X/200YG24NK4V
DREM10-5X/200YMG24K4M
DREM10-5X/200YMG24K4V
DREM10-5X/200YMG24NK4M
DREM10-5X/315YG24K4M
DREM10-5X/315YG24K4V
DREM10-5X/315YG24NK4M
但先導電磁閥斷電時、彈簧復位型電液換向閥主閥體兩端蓋內的液壓油會通過先導電磁閥的中位與泄油口接通、主閥芯在復位彈簧的作用下會立即復位，由于主閥芯復位快、亦即切斷執(zhí)行元件油路的速度快、從而引起液壓沖擊。R900496836 ZDR6DP3-4X/75YMV
R900494714 ZDR10DA2-5X/75YM
R900493965 ZDR10DP3-5X/150YM
R900493226 ZDR6DA1-4X/150YM
R900492575 ZDR6DP2-4X/75YMSO43
R900487690 ZDR10DP2-5X/210YMV
R900483788 ZDR6DP2-4X/210YM
R900483787 ZDR6DP2-4X/150YM
R900483786 ZDR6DP2-4X/75YM
R900483785 ZDR6DP2-4X/25YM
R900481930 ZDR6DP1-4X/75YMW5
R900481889 ZDR10DP2-5X/25YMV
R900481853 ZDR6DB1-4X/50YMSO94
R900481806 ZDR10DP3-5X/25YM
R900481805 ZDR6DP1-4X/210YMSO43
R900481804 ZDR6DP1-4X/50YMSO94
R900481803 ZDR6DA1-4X/50YSO94
R900481534 ZDR6DP3-4X/150YMSO43
R900481530 ZDR6DA1-4X/25Y/12
R900481484 ZDR10VP5-3X/50YM
R900481324 ZDR6DA2-4X/150YMSO43
R900481305 ZDR10DA2-5X/75YV
R900481125 ZDR6DA1-4X/25Y
R900481115 ZDR6DP3-4X/210YM
R900481092 ZDR6DA2-4X/25YMV
R900481065 ZDR6DP7-4X/150YM
R900481036 ZDR6DA1-4X/210YM
R900479783 ZDR6DA3-4X/210YM
R900478553 ZDR6DA7-4X/75Y
R900478367 ZDR6DA1-4X/75YW43
R900478216 ZDR10DA3-5X/75YV
R900477791 ZDR10DA3-5X/25YM
R900477640 ZDR10VA6-3X/200Y
R900477431 ZDR6DA3-4X/150YM
R900477396 ZDR6DP1-4X/150YMSO43
R900476843 ZDR10VP6-3X/315YM
R900476381 ZDR6DP1-4X/210YM
R900476331 ZDR6DP2-4X/150YMV
R900476274 ZDR6DP3-4X/25YM
R900473199 ZDR6DP3-4X/150YM
R900472873 ZDR10DB1-5X/25YM
R900472027 ZDR10DB3-5X/75YM
R900471974 ZDR10DB3-5X/150YM
R900471879 ZDR10VA5-3X/100YM
R900471532 ZDR10DP2-5X/210YMSO30
R900470243 ZDR10DA2-5X/75YSO30
R900469826 ZDR10VP4-3X/315YMV
R900469594 ZDR6DP3-4X/25YMSO109
R900469405 ZDR10VB5-3X/315YMV
R900468829 ZDR10VA4-3X/100Y
R900468696 ZDR6DP1-4X/75YMJ
R900464323 ZDR10VA6-3X/100Y
R900464178 ZDR10DA3-5X/150YM
R900463269 ZDR6DB2-4X/210YM
R900462912 ZDR10VB5-3X/200Y
R900461710 ZDR10DA1-5X/25YM
R900460490 ZDR10DA1-5X/150YM
R900459126 ZDR6DA2-4X/75YV
R900457561 ZDR6DA2-4X/75YMV
R900457313 ZDR6DA1-4X/210Y
R900457022 ZDR10VB5-3X/100Y
R900456019 ZDR6DP2-4X/75YMV/12
R900455586 ZDR6DA3-4X/25YM
R900455057 ZDR6DA2-4X/150YSO75
R900454116 ZDR10DA2-5X/150Y/12
R900453668 ZDR6DP3-4X/25YMV
R900452815 ZDR6DP2-4X/75YMV
R900452728 ZDR10VP7-3X/200YM
R900451501 ZDR10VA4-3X/315Y
R900450354 ZDR10VP4-3X/315YM
R900450066 ZDR6DP1-4X/150YMV
R900449839 ZDR6DB2-4X/25YM
R900449433 ZDR10DA2-5X/210YV
R900449003 ZDR6DB2-4X/75YMSO43
R900448839 ZDR6DP0-4X/40YMJVW80
R900448506 ZDR6DA1-4X/75YM
R900448490 ZDR6DA3-4X/25Y
R900448143 ZDR6DP2-4X/25YMV
R900448079 ZDR6DA2-4X/25YM
R900447403 ZDR6DB2-4X/75YM/12
R900445998 ZDR6DA3-4X/150Y
R900445958 ZDR6DA2-4X/150YM
R900445343 ZDR6DB1-4X/25YM
R900445288 ZDR6DA2-4X/210YV
R900444003 ZDR10VA5-3X/200Y
R900443484 ZDR10DB2-5X/210YM
R900442770 ZDR10DA1-5X/75Y/5
R900442769 ZDR10DA1-5X/25Y/5
R900442768 ZDR10DA1-5X/210Y/5
由此可見，疊加一個P口可調節(jié)流閥，只能實現(xiàn)換向接通延時、不能解決復位切斷延時。注：象油缸類的執(zhí)行元件，油缸前進與后退時通過換向閥的流量是不一致的，油缸無桿腔與有桿腔的面積比越大、流量差距也越大，此時若想較滿意的降低執(zhí)行元件前進與后退時的液壓沖擊，通過一個可調節(jié)流閥，恐怕是難以實現(xiàn)的。