R900500841 SV15GA1-4X/V

R900532575 SV15GA1-4X/V/12

R900501980 SV15GA2-4X/

R900501010 SV15GA2-4X/V

R978865277 SV15GA2-4X/V/12

R900502709 SV15GA3-4X/

R900035312 SV15GA3-4X/V

R900203833 SV15GA4-4X/

R901019898 SV15GA4-4X//12

R978914280 SV15GA4-4X/12

R900224092 SV15GA4-4X/V

R900501333 SV15GB1-4X/0811404702 4WRLE10W80SJ-3X/G24KO/A1M

0811404703 4WRLE10W1-80SJ-3X/G24KO/A1M

0811404704 4WRLE10W50SJ-3X/G24ETKO/A1M

0811404707 4WRLE10W80SJ-3X/G24ETKO/A1M

0811404711 4WRLE10W4-80SJ-3X/G24KO/A1M

0811404713 4WRLE10E80SJ-3X/G24ETKO/A1M

0811404714 4WRLE10E4-80SJ-3X/G24KO/A1M

0811404715 4WRLE10E1-80SJ-3X/G24ETKO/A1M

0811404720 4WRREH6VB40L-1X/G24KO/B5M

0811404721 4WRREH6VB24L-1X/G24KO/B5M

0811404722 4WRREH6VB12L-1X/G24KO/B5M

0811404723 4WRREH6VB8L-1X/G24KO/B5M

0811404725 4WRREH6VB15P-1X/G24KO/B5M

0811404726 4WRREH6VB25P-1X/G24KO/B5M

0811404729 4WRREH6VB15P-1X/G24KO/B5M-847

0811404738 4WRPEH6C1B4CL-2X/G24KO/A1M

0811404739 4WRPE6Q5-32M-2X/G24KO/A1M-836

0811404740 4WRPE6Q5-18M-2X/G24KO/A1M-836

0811404741 4WRPEH6CB04L-2X/G24KO/A1M

0811404742 4WRPE6R5-32M-2X/G24KO/A1M-838

0811404743 4WRPEH6CB24L-2X/G24KO/B5M

0811404750 4WRPE10EA80SJ-2X/G24KO/A1M

0811404751 4WRPE10EA50SJ-2X/G24KO/A1M

0811404770 4WRPE10E50SJ-2X/G24KO/A1M

0811404771 4WRPE10E80SJ-2X/G24KO/A1M

0811404772 4WRPE10W50SJ-2X/G24KO/A1M

0811404774 4WRPE10E1-80SJ-2X/G24KO/A1M

0811404776 4WRPE10W80SJ-2X/G24KO/B5M

0811404777 4WRPE10W1-80SJ-2X/G24KO/A1M

0811404778 4WRPE10W50SJ-2X/G24KO/F1MR900422880 S6A0.0

R900422881 S6A1.0

R900375858 S6A5.0

R900422885 S8A0.0

R900422886 S8A1.0

R900422888 S8A3.0

R900358268 S8A5.0

R900420530 S10A0.0

R900420531 S10A1.0

R900420532 S10A2.0

R900420534 S10A3.0

R900446476 S10A5.0

R900420536 S15A0.0

R900420537 S15A1.0

R900420520 S15A2.0

R900420521 S15A3.0

R900446477 S15A5.0

R900420524 S20A0.0

R900420525 S20A1.0

R900420528 S20A2.0

R900420529 S20A3.0

R900446369 S20A5.0

R900420511 S25A1.0

R900420515 S25A3.0

R900451778 S25A5.0

R900420517 S30A0.0

R900420519 S30A1.0

R900420502 S30A2.0

R900420504 S30A3.0

R900446709 S30A5.0VT5041-2X/3 ??

VT11025 ?

VT11024 ?

VT11006-1X/ ??

VT3024-3X?

VT3002-2X/32D ?

VT11131-1X/ ?

VT11132-1X/ ?

VT11165-1X/ ?

VT2000-5X/ ?

VT11012-1X ?

VT-HNC100-1-23/W-08-P-0

VT-PVAR2-1X/2 ?

VT-SR35?

VT-VRPA1-151-1X/V/0/0 ??

VT10468-3X/BO-RX ??

VT11015-1X/ ?

VT12302-2X/

VT-VRPA2-527-1X/V0/RTS ??

VT-VRPA2-537-1X/V0/RTS ??

VT-VRPA1-527-1X/V0/QV?

VT-VRRA1-527-2X/V0 ? ? ? ? ? ? ?

VT-VETSY-1-1X/1-2-1-1-1/ ??

VT-SR1-1X/0 ??

VT-SR2-1X/0-60 ??

VT-SR7-1X/0/VT5005-1X/

VT11010-1X/?

VT11073-1X ?

VT11031-1X/ ?

VT11030-1X ?

VT11078-2X ?

VT11004-1X/?

VT11013-1X ?

VT11021-1X/ ?

VT11007-1X/

VT11016-1X/ ?

VT-SR41-1X/1/2 ??

VT-VSPD-1-2X/V0/0-0-1 ??

VT11005-1X/ ?

VT11032-1X/ ?

VT11033-1X/

VT11037-1X/ ?

VT5007-1X/ ?

VT11550-2X/ ?

VT16000-3X ?

VT13477-2X/3?

VT11554-2X/ ?

VT12323-2X/ ?

VT11023-1X

VT-MRPA2-2-1X/V0/0 ?

VT11008-1X ?

VT-MRPA2-1-1X ?

VT-MSPA1-50-1X ?

VT-MSPA1-1-1X/V0/?

VT-MACAS-500-10/VO/I?

VT-MSPA1-50-1X/V001 ?

VT-SWMA-1-1X/VO/O ?

VT-TRPD-2-1X/V0/0 ?

VT11018-1X ?

VT12304-2X/ ?

VT-HACDB-1-1X/V0/1-0-0?

VT5008-1X/ ??

VT13000-1X/ ??

VT-VRPA1-51-1X ??

VT5013-3X/R5E ??

VT5014-3X/R1E ?

VT12321-2X ?

VT5014-3X/R5E?

VT5015-3X/R5E?

VT1610-3X/ ?

VT12270-1X/?

VT1516-1X/?

VT12427-1X/ ?

VT5007S-1X/R5 ）由于換向結(jié)構(gòu)的特殊性，使得用戶在實(shí)現(xiàn)某一功能時(shí)必須購(gòu)買相應(yīng)的液壓元件，再加上工程機(jī)械廠家會(huì)根據(jù)不同最終用戶要求設(shè)計(jì)出相應(yīng)的功能，這樣會(huì)造成生產(chǎn)廠家采購(gòu)?fù)?、多?guī)格的液壓控制元件來滿足不同功能要求的需要，不利于產(chǎn)品通用化及產(chǎn)品管理，同時(shí)會(huì)大大提高產(chǎn)品成本。?

　　 （3）由于執(zhí)行機(jī)構(gòu)進(jìn)出液壓油通過一根閥芯進(jìn)行控制，單獨(dú)控制執(zhí)行機(jī)構(gòu)兩側(cè)壓力是不可能的。因此，出油側(cè)背壓作用于執(zhí)行機(jī)構(gòu)運(yùn)動(dòng)的反方向，隨著出油側(cè)背壓升高，為保質(zhì)執(zhí)行機(jī)構(gòu)的運(yùn)動(dòng)，必須提高進(jìn)油側(cè)壓力。這樣會(huì)使得液壓系統(tǒng)消耗的功能增加，效率低，發(fā)熱增加。R900422880 S6A0.0

R900422881 S6A1.0

R900375858 S6A5.0

R900422885 S8A0.0

R900422886 S8A1.0

R900422888 S8A3.0

R900358268 S8A5.0

R900420530 S10A0.0

R900420531 S10A1.0

R900420532 S10A2.0

R900420534 S10A3.0

R900446476 S10A5.0

R900420536 S15A0.0

R900420537 S15A1.0

R900420520 S15A2.0

R900420521 S15A3.0

R900446477 S15A5.0

R900420524 S20A0.0

R900420525 S20A1.0

R900420528 S20A2.0

R900420529 S20A3.0

R900446369 S20A5.0

R900420511 S25A1.0

R900420515 S25A3.0

R900451778 S25A5.0

R900420517 S30A0.0

R900420519 S30A1.0

R900420502 S30A2.0

R900420504 S30A3.0?