美國PARKER比例閥優(yōu)惠
美國PARKER比例閥*，也就是說，美國派克伺服閥的主閥是靠前置級閥的輸出壓力來 控制的，而前置級閥的壓力則來自于伺服閥的入口p，假如p口的壓力不足，派克前置級閥就 不能輸出足夠的壓力來推動主閥芯動作。
而我們知道，當負載為零的時候，如果四通滑閥*打開，p口壓力=t口壓力+閥口壓力損失 （忽略油路上的其它壓力損失），如果閥口壓力損失很小，t口壓力又為零，那么p口的壓力 就不足以供給前置級閥來推動主閥芯，整個伺服閥就失效了。所以派克伺服閥的閥口做得偏 小，即使在閥口全開的情況下，也要有一定的壓力損失，來維持前置級閥的正常工作。
美國PARKER比例閥優(yōu)惠
美國PARKER比較閥*，一般說來，好像伺服系統(tǒng)都是閉環(huán)控制，比例多用于開環(huán)控制 ；其次比例閥類型要多，有比例壓力、流量控制閥等，控制比伺服要靈活一些。從他們內(nèi)部 結構看，伺服閥多是零遮蓋，比例閥則有一定的死區(qū)，控制精度要低，響應要慢。但從發(fā)展 趨勢看，特別在比例方向流量控制閥和伺服閥方面，兩者性能差別逐漸在縮小，另外比例閥 的成本比伺服閥要低許多，抗污染能力也強！
美國PARKER比例閥優(yōu)惠
派克比例閥、派克伺服閥
D41FTE01FC4NF08    D41FHA31C2NB00    D41FWE01FC2NLW8    D41VW02C4NJP7     D31FHE02C4NB00    D41VW15C5NGW    D41FHA31C1NB00    D41VW1C2NUW89     D41FWE02FC2NLW0    D41VW26H2NJP    D41VW1C4NYP7    D41VW4C1NUW    D41VW20H4NJP     D41VW9E2NGW    D41VW1C4NYW    D41VW3P4NJP
D41FHA31F2NB08    D31FTE01CC1NF08    D41FHE02C4NB00    D41FHE52C4VB00     D41FTE01FC4NG00    D41FHA31C4VB00    D41FWE02FC4NLW0    D41VW06C1NJP789     D31FHE52A1NB00    D41VW16C1NTP770    D41FHA61B4NB00    D41VW1C2NYP70     D41VW01E4NJP7    D41VW2C1NJP729    D41VW1C5NJW88    D41VW4C1NYC     D41VW21C2NJP    D41VW9E5NJP    D41VW1C4VJP    D41VW4C1NAP70
D41FHA31F4NB00    D31FTE01CC4NF08    D41FHE02C4VB00    D41FHE52E2NB00     D41FTE01FC5NF00    D41FHA32F4NB00    D31FHE01C4NE00    D41VW10C5NJP     D31FSE01B2NLW0    D41VW16C1NYP    D41FHB31E1NB00    D41VW1C2NYP770     D41VW11C4NJW7    D41VW2C5NTP70    D41VW1E2NGW11    D41VW4C2NJC5     D41VW21C4NYP770    D41VW9E5VJW    D41VW1C5NTW89    D41VW4C1NJP60
D41FHA32C1NB00    D31FWB31CC4NLW0    D41FHE02E1NB00    D41FHE52E4NB00     D41FTE02FC1NG00    D41FHB31F1NB00    D31FSE01B4NXW0    D41VW11C1NGW     D31FSE02B4NLW0    D41VW16C1NYP770    D41FHB32C2NB00    D41VW1C2VTP770     D41VW11C4VJDLJ57    D41VW2C5NTW    D41VW1K2NJP    D41VW4C2NTW70    D41VW22C3NJP     D41VW9K3NYW    D41VW1C5NYP70    D41VW4C2NGW
D41FHA32C2NB00    D31FWE04CC4NLW0    D41FHE02F1NB00    D41FHE52E5NB00     D41FTE02FC1VF00    D41FHB31F4NB00    D31FTB32CC1NF00    D41VW11C1NJP     D31FTB31CC4NF00    D41VW1C1NGW    D41FHB61B2NE00    D41VW1C4NAP70     D41VW12C2NGW260    D41VW2C5VTP70    D41VW1K2NUW    D41VW4C2VJWW    D41VW2C6NTP70     D81FSE01E4NLW0    D41VW1E4NTP70    D41VW4C4NJP780
D41FHA32F2NB00    D41FHB31F1VB00    D41FHE02F2NB00    D41FHE52F2NB00     D41FTE02FC2NF00    D41FHB31F4VB00    D31FTB32CC4NF00    D41VW11C1NJP2     D31FTE01CC1NF00    D41VW1C1NJP2    D41FHB61C1NB00    D41VW1C4NGW    D41VW16C4NJW     D41VW2C6NJW    D41VW1K4NJP66    D41VW4C3NGW    D41VW30H5NJW    D81FSE02E4NXW0     D41VW1F1NJP210    D41VA4C1V
D41FHB31C1NB00    D41FHB34F2NB00    D41FHE02F4NB00    D41FHE52F2VB00     D41FTE02FC4NG00    D41FHB32F4NE08    D31FTE02CC1NF00    D41VW11C1NJW789     D31FTE01CC1NG00    D41VW1C1NJP8    D41FHB61C2NE00    D41VW1C4NJP    D41VW1C2NUW     D41VW2E5NGW    D41VW20B1NJP89    D41VW4C4NJPW    D41VW34C4NJP     D81VW01C4NYCF45    D41VW1K1NTP70    D41VW12C2NJP
D41FHB31C2NB00    D41FHB61B1NB00    D41FHE52B1NE00    D41FHE52F5NB00     D31FHE01C4NB08    D41FHB61F2NB00    D41FHA61F1NE00    D41VW11C1NTP770     D31FTE02CC4NF00    D41VW1C1NJW    D41FHB61C4NB00    D41VW1C4NJW260     D41VW1C4NYC7    D41VW2K6NYP70    D41VW20B2NJP89    D41VW4C4NJW    D41VW34C4NTW     D81VW11C1NJP    D41VW1K2NJW66    D41VW15C1NJP
D41FHB31E1NE00    D41FHB61B4NB00    D41FHE52B1VE00    D41FHE52F5VB00     D31FHE01C5NB00    D41FHB61F4VB00    D41FHB31F2NB08    D41VW11C1NYCF7     D31FWE01CC5NLW0    D41VW1C1NJW27    D41FHE01B1NB00    D41VW1C4NJW66     D41VW1C5NJP11    D41VW2P2NYP    D41VW20B4NDP11    D41VW4C4NJW88    D41VW3C2NYP     D81VW11C1NYP89    D41VW20B1NJP2    D41VW1C1NJP78
D41FHB31E2NB08    D41FHB61B4VB00    D41FHE52B4NB00    D41FSA31C4NXW0     D31FHE02A4NE00    D41FHE01C4NB00    D41FHE01E4NB00    D41VW11C1NYP70     D31FWE02CC5NLW0    D41VW1C1NJW89    D41FHE01B1NE00    D41VW1C4NJW88     D41VW1C5NYW    D41VW30B2NYP70    D41VW20B5VJW    D41VW4C4NJW89    D41VW3C4NYP770     D41FWB32FC4NLW0    D41VW20B2NJWT    D41VW1C2NTP70
D41FHB31F4NE00    D41FHB61E2NB00    D41FHE52B4VB00    D41FSA32C2NXW0     D31FHE02C2NB00    D41FHE01F1NE00    D41FHE01F1NB08    D41VW11C1NYP770     D41FHA32C2NE00    D41VW1C1NKP    D41FHE01B2NB00    D41VW1C4NTP770    D41VW1F4NJW     D41VW30B6NJP    D41VW20H1NYP70    D41VW4C4NJWW    D41VW42C1NYC560     D41VW02C4NTP    D41VW20B4NJP7    D41VW1C4NJP89
D41FHB32B1NB00    D41FHB61F1NB00    D41FHE52C1NB00    D41FSB31C2NXW8     D31FHE52A1NE00    D41FHE01F2NE28    D41FHE01F1VB00    D41VW11C2NJDJ5     D41FHA61F1VB00    D41VW1C1NTP770    D41FHE01F5NB08    D41VW1C4NTPW     D41VW1K4NJP    D41VW30H2NTP    D41VW20H4VJW60    D41VW4C4NKP    D41VW43B2NJWT80     D41VW11C4NJP7    D41VW20B4X767    D41VW1C4NUW66
D41FHB32B1NE00    D41FHB61F2VB00    D31FHE01C1NB00    D41FSB31C4NXW0     D31FHE52A2NB00    D41FHE02C1NB00    D41FHE52F4NB00    D41VW11C2NTP70     D41FHA61F4VB00    D41VW1C1NTP8970    D41FHE52B2NB00    D41VW1C4NTW     D41VW1P2NJW20    D41VW30H2VJP    D41VW22C4NJPW    D41VW4C4NTW27    D41VW4C1NJW27     D41VW11C4NJW789    D41VW20B5NJW9    D41VW1C5NGW
D41FHB32F1NB00    D41FHB61F4NB00    D31FHE52A5NB00    D41FSB32C4NXW0     D31FHE52A4NB00    D41FHE52B1NB00    D41FSE01C2NLW0    D41VW11C2NUW     D41FHB31F2NE00    D41VW1C1NUW    D41FHE52C2NE00    D41VW1C4NYPW7     D41VW20B1NTP770    D41VW35C1VJP    D41VW2C6NTW    D41FWA32FC1NLW0    D41VW4C2NJP     D41VW11C4NYP70    D41VW20B5NYP70    D41VW1E1NTP70
D41FHB32F2NB00    D41FHE01C4NE00    D31FTA31CC4NF00    D41FSE01C1NXW8     D31FHE52A4NE00    D41FHE52B1VB00    D41FSE01C2NXW0    D41VW11C4NJP89     D41FHB32E1NB00    D41VW1C1NYC560    D41FTB31FC1NG00    D41VW1C4NYW27     D41VW20B1NYC89    D41VW3C1NJP    D41VW2E3NJP    D41FWE02FC2NXW0    D41VW4C4NTP89     D41VW11C4NYP770    D41VW20B6VJW    D41VW1E4NYP70
D41FHB32F4NB00    D41FHE01C4VB00    D31FWA31CC4NLW0    D41FSE01C4NLW0     D31FHE52C4NB00    D41FHE52C1NE00    D41FSE02C1VXW0    D41VW11C4NJW     D41FHB61C5NB00    D41VW1C1NYC70    D41FTE01FC4VF00    D41VW1C5NTP70     D41VW20B2NJP    D41VW3C1NTP    D41VW2E3NJW    D41VW15C5NJW    D41VW4C4NYW789     D41VW12C2NJP27    D41VW20D4NJDJ5    D41VW1F4NJP
D31DW2F2NJP    D41FHE01E1NB00    D31FWE03CC4NXW0    D41FSE02C1NLW0     D31FSB89B4NXW0    D41FSA31C1NLW0    D41FTB31FC2NF08    D41VW11C4NJW6089     D41FHE52E4NE00    D41VW1C1NYW70    D41FTE02FC4NF00    D41VW1C6NJW     D41VW20B2NTP70    D41FTB32FC2NF00    D41VW2K3NJP    D41VW1C1NTW    D41VW4C5NTW     D41VW15C2NJP88    D41VW20D4NJPX872    D41VW1K2NYP
D31DW30H5NJW    D41FHE01E1NE00    D41FHA61F1NB00    D41FSE02C4NXW0     D31FSE01B1NXW0    D41FSE01C5NXW0    D41FTB31FC5NF00    D41VW11C4NYW     D41FHE52F2NE00    D41VW1C1VYW    D41FWB32FC5NLW0    D41VW1E1NYP770     D41VW20B2VYW    D41FTB32FC5NF00    D41VW30B2NYW7    D41VW1C2NTP770     D41VW4C6NYP70    D41VW15C5NJW88    D41VW20D4NJW7    D41VW1K5NGW
D31DW4C1NJW    D41FHE01E2NB00    D41FHB31C1VB00    D41FSE02C4VXW0     D31FSE01B4NLW0    D41FSE02C1NXW0    D41FTE01FC2NF00    D41VW14C2NJP     D41FHE52F4VB00    D41VW1C2NDP    D41FWE01FC4NXW0    D41VW1E2NJP     D41VW20B4NJDLJ5    D41FWB31FC2NLW0    D41VW35C1NYC5    D41VW1C4NJPW     D41VW4K4NJW    D41VW1C1NJP    D41VW20D4NUW55    D41VW1M1NYP70
D31DW4C4NAP    D41FHE01E4VB00    D41FHB31E4NB00    D41FTB31FC1NF00     D31FSE01B5NXW0    D41FSE02C2NXW0    D41FWB32FC2NXW0    D41VW14C2NKP     D41FTB32FC1VF00    D41VW1C2NGW    D41VW11C1NTP70    D41VW20B1NJP     D41VW20B4NJP89    D41FWE01FC4NLW0    D41VW3C2NJC5    D41VW1C4NJW89     D41VW4P1NTW70    D41VW1C1NJW7    D41VW20H1NJP    D41VW1P1NTW70
D31DW4C5NJP    D41FHE01E5NB08    D41FHB31F1NE00    D41FTB31FC2NF00     D31FSE02B1NXW0    D41FSE04C4NXW0    D41FWE02FC1NLW0    D41VW14C2NYP70     D41FTE04FC4NF08    D41VW1C2NJP    D41VW15C2NJP    D41FHB61F2NE00    D41VW20B6NJP     D41FWE02FC1VLW0    D41VW3C2NTP    D41VW1C5NTW    D41VW58C4NJP788     D41VW1C1NYW770    D41VW20H2NJW    D41VW20B2VJW20
D31DW9C5NYP    D41FHE01F1NB00    D41FHB31F2NB00    D41FTB31FC4NF00     D31FSE81B4NXW0    D41FTB32FC4VF00    D41FWE02FC5NLW0    D41VW15C2NJW     D41FWA32FC4NLW0    D41VW1C2NJP55    D41VW1C1NTP70    D41FHB61F5NB00     D41VW20D1NTPW    D41VA2C1N    D41VW3C4NJW    D41VW1E4NJW    D41VW5C4NJP7     D41VW1C2NJP789    D41VW21C4NJP    D41VW20B4VYP
D31FHA60C5NB00    D41FHE01F2NB00    D41FHB61E5NB00    D41FTB31FC4NG00     D31FTA32CC4NG00    D41FTE02FC1NF00    D41VA1C4N    D41VW15C4NJPC999908     D41VW11C1NJP7    D41VW1C2NJP88    D41VW1C1NYP770    D41FHE01C1NE00     D41VW20D4NJW    D41VW11C2NYW70    D41VW3F1NJP210    D41VW20B2NJW    D41VW6C5NTP     D41VW1C2NJW88    D41VW2C2NAW    D41VW20B5NJWT11
D31FHA61C1NB00    D41FHE01F2NE00    D41FHE01C1NB00    D41FTB31FC5NG00     D31FTB32CC1NG00    D41FTE02FC2NG00    D41VA1C4N89    D41VW15C4NJW     D41VW11C1NYC45    D41VW1C2NJP89    D41VW1C1NYW27    D41FHE01C5NB00     D41VW20D4NYP770    D41VW14C6NKP    D41VW42C4NJP89    D41VW20B2NTW70     D41VW9C1NAPX729    D41VW1C2NYP60    D41VW2C2NYP70    D41VW20D1NGW255
D31FHA61C4NB00    D41FHE01F4NB00    D41FHE01C2NB00    D41FTB32FC1NF00     D31FTE01CC2NF00    D41FTE02FC4VF00    D41VW00H4NJW89X810    D41VW15C4NYP70     D41VW11C1NYW    D31FTE01CC2NF08    D41VW1C1X767    D41FHE02F1NE00     D41VW20D4NYW27    D41VW1C1NJP89    D41VW43B2NJP80    D41VW20B2NUW7     D41VW9C1NJW2X729    D41VW1C3NYP8970    D41VW30B2NTP70    D41VW20D1NJP 
D41VW20D1NTP    D41VW7C2NYP70    D41VW22C2NJWT88    D81FHE52E2NB00     D41VW4C1NYP70    D41VW1C4NJP80    D41VW21C1NYP70    D41VW1P2VJP20     D41VW54C1NJP60    D41VW20B2NYP770    D41VW35C1NGW    D41VW20H2NYP70     D41VW9E6NTP    D41VW2F6NYW70    D81VW1C4NYW70    D81FSE01E2NLW0    D89V2C1NX729     D81VW1C4NJP89    D81VW4C4NYCF5    D81VW2C5NYP
D41VW20D4NJP    D41VW9C2NJW88    D41VW26B2NJW    D81FHE52H4NB00    D41VW4C2NTP70     D41VW1C4NJP88    D41VW21C2NTW    D41VW20B1NJP9    D41VW54C1VJP60     D41VW20B4NGW    D41VW3C2NTW    D41VW20H5NJP    D41VW9K3NJP    D41VW30B2NYW70     D81VW1C4NYW89    D81VW1C1NJW27    D89V2C3N89X712    D81VW1C4NTP70     D81VW4C4X767    D81VW2E5NYP
D41VW20H1NJP980    D41VW9C2NYP70    D41VW26H1NJP    D81FSA32E4NXP0     D41VW4C3NYC4770    D41VW1C4NJW60    D41VW26B5NJW    D41VW20B2NYP70     D41VW54C4NTP70    D41VW20B4NJEE    D41VW3C2NYW    D41VW21C4NJW    D81VW12C2NJP7     D41VW35C4NJW    D81VW1C6NJP89    D81VW1C1NYP789    D89V2K6N70    D81VW1C5NJW88     D81VW4C6NYP70    D81VW4C1NTP70
D41VW20H4NJW7    D41VW9C2NYW70    D41VW2C3NTP70    D41VW1C4NGW27    D41VW4C4NDP     D41VW1C4NTP70    D41VW2C2NJP7    D41VW20B2VJP    D41VW59C2NUW    D41VW20B4NJP     D41VW3C4NTP70    D41VW26B1NJP    D81VW15C2NJW    D41VW3C2NTW7    D81VW20B1NUW     D81VW1C4X767    D89V4C1N70    D81VW1C5NJW89    D81VW4E1NJP    D81VW4C1NYP70
D41VW21C1NYP770    D41VW9C3NJP7    D41VW30B5NJP    D41VW1C4VJPT    D41VW4C4NJW7     D41VW1C4NYCH    D41VW2C2NTP7    D41VW20B3NYP70    D41VW5C2NUW    D41VW20B4NJW8     D41VW3C4VJW    D41VW2C1NJPX729    D81VW15C4NTP60    D41VW42C4NGW     D81VW20D1NJW    D81VW21C1NJW    D89V4C2N70X712    D81VW1C5NTW    D81VW4E4NJW     D81VW4C2NTW70
D41VW21C4NAP770    D41VW9C5NAP70    D41VW30B5NYP70    D41VW1C6NTP     D41VW4C4NYP27    D41VW1C4NYEU    D41VW2C2NYPT    D41VW20B4NJW7     D41VW6E1NJW2789    D41VW20B4NNEE    D41VW3E4NUW    D41VW2C3NJP    D81VW1C1NJP89     D41VW4C1NJP27    D81VW20H1NJP60    D81VW2C2NTP70    D89V4C5N70X712     D81VW1E1NTP    D81VW4K1VJW    D81VW4C4NJW78
D41VW21C4NTW7    D41VW9C5NK868    D41VW3C1NTW    D41VW1E1NJP    D41VW4E4X767     D41VW1C4VYP7    D41VW2C3NAP    D41VW20D2NGW755    D41VW6E1NTW770     D41VW20B5NJW    D41VW42C4NYP70    D41VW2C6NJP    D81VW1C1VYP70    D41VW4C1NTP     D81VW20H1NTP    D81VW2C3NJP    D89V9C2N60    D81VW1F4NYW27    D81VW59C1NJP     D81VW4C4NKP
D41VW26B4NTP    D41VW1C1NAP70    D41VW4C1NJWL    D41VW1F1NYP70    D41VW4K1NJP     D41VW1E1NYP70    D41VW2C3VYP70    D41VW20D4NTP    D41VW6F2NYP    D41VW20D1NJW7     D41VW43B5NJW80    D41VW2C6NYP70    D81VW1C2NJW11    D41VW4C460X767     D81VW20H1NTP7    D81VW2C5NTP    D91FHB31F2NB00    D81VW20B1X767    D41VW4C4NYC56     D81VW4C4NTCH
D41VW2C3NYP70    D41VW1C2NJWW    D41VW4C1NKP    D41VW20B2NJW7    D41VW4P2NJW20     D41VW1E2NJW80    D41VW2C5NJP    D41VW20D5NGW55    D41VW7C2NUW    D41VW20D4NYP70     D41VW43H2NJW66    D41VW30B5VUW80    D81VW1C2NUW    D41VW4C4NYP770     D81VW20H2NTP770    D81VW34C1NJP7    D91FHE01F4NB00    D81VW20B2NJW     D41VW4C5NTP70    D81VW5C5NJP9
D41VW2C5NTP770    D41VW1C4NJP55    D41VW4C1NYP789    D41VW20B3NTP    D41VW6E1NJW     D41VW1E2NYW    D41VW2C5NJW    D41VW20D6NTP    D41VW7C3NJP    D41VW20H1NTP70     D41VW4C1NJP    D41VW30H2NYP    D81VW1C4NJW2    D41VW4C4VTC    D81VW21C4NJP     D81VW3C1VYP    D91FHE01H2NB00    D81VW20B2NUW    D41VW54C1NJP    D81VW9C1NYPX729
D41VW2K6NJP    D41VW1C4NJP7    D41VW4C4NGW27    D41VW20B3NYP770    D41VW7C2NJW66     D41VW1E4NYP870    D41VW2C6NKP    D41VW21C1NJP    D41VW9C2NUW     D41VW21C1NTP70    D41VW4C1NJP7    D41VW3P2VJW20    D81VW1C5NYP    D41VW4E1NJW     D81VW21C5NJW    D81VW4C4NGW    D41VW4C4NJW2    D81VW20B4NGW    D41VW54C4NJW7     D81VW9C2NJP80
D41VW30B2NJP    D41VW1C4NKP    D41VW4C4NTC    D41VW20B4NYEU    D41VW7C2NTP70     D41VW1F4NTW    D41VW2E6NKP    D41VW26B2NJEE2    D41VW9C5NJP7    D41VW21C4NAP     D41VW4C1NYP27    D41VW43B2NYP    D81VW1E1NJW9    D41VW4K2NJW    D81VW2C2NJW     D81VW4C4NGW7    D41VW4C4NJW27    D81VW20B4NJDJ5    D41VW5C2NTP2070     D81VW9C2NTP70
D41VW30B3NTP70    D41VW1C5NYC    D41VW4C4NYP70    D41VW20B4NYP7    D41VW7C5NJP2     D41VW1K1NJP    D41VW30B5NJW    D41VW2C5NJW755    D41VW9C6NJW    D41VW21C4NJW7     D41VW4C1VJP    D41VW4C1NTP770    D81VW1K2NUW66    D41VW4K4NJPW     D81VW2C2NYP70    D81VW4C4NYP70    D41VW4C4NTC770    D81VW20D4NTP     D41VW9C1NJPX729    D81VW9C2NTW
D41VW34C4NJ5426    D41VW1E4NJP    D41VW54C2NDP    D41VW20D2NYP    D41VW9C6NJP     D41VW1K4NJW    D41VW30D6NAP70    D41VW2E6NYP70    D81FH-D91FH#C     D41VW21C4NTP    D41VW4C2NJP7    D41VW4C1NYW70    D81VW1K5NYP6070     D41VW7C1NJ729    D41VW42P1NTP70    D81VW4K4NTP    D41VW4P2VJW     D81VW20D4NYC57    D81FSE02E2NXW8    D81VW9C5NJP8
D41VW3C4NJP89    D41VW1K1VYP70    D41VW61C4NTP770    D41VW20D5NYW     D41VW9C6NJP89    D41VW20B1NJP80    D41VW30H2NUW    D41VW30B5NJW11     D81FHA31H1NB00    D41VW21P1NAP    D41VW4C2NJW    D41VW4C2NAP    D81VW20B1NJP     D41VW7C1NYPX729    D41VW4C1NJP80    D81VW59C4NJP    D41VW66C5NJW     D81VW21C1NJW88    D81VW11C1NJW    D81VW9C6NJW
D41VW42C4NJP    D41VW20B1NJP78    D41VW6C1NYP70    D41VW20H4NTW770     D41VW9E1NJPX729    D41VW20B1NYP770    D41VW30H5NJP    D41VW30D2NYP70     D81FSA82E1NXW0    D41VW22C4NJP    D41VW4C2NKP    D41VW4C4NJW260     D81VW20B1NTP70    D41VW9C2NYW78    D41VW4C1NJW7    D81VW5E6NJP    D41VW6C2NJP260     D81VW21C1NJW89    D81VW11C1VYP    D81VW9C6VJP
D41VW4C1NJW    D41VW20B1NKW    D41VW6C2NJW755    D41VW22C4NJW7    D81FH-D91FH     D41VW20B1VJW    D41VW34C4NJW    D41VW43B2NJPT80    D81VW01C4NJW    D41VW23B2NJW     D41VW4C2NUW，美國PARKER比例閥優(yōu)惠

如需采購，歡迎各位新老客戶咨詢我司