寶德6223型伺服輔助式比例閥/BURKERT6223型比例閥
寶德6223型伺服輔助式比例閥的主閥般來(lái)說(shuō)和換向閥樣是滑閥結(jié)構(gòu)，只不過(guò)閥芯的換向不是靠電磁鐵來(lái)推動(dòng)，而是靠前置閥輸出的液壓力來(lái)推動(dòng)，這點(diǎn)和電液換向閥比較相似，只不過(guò)電液換向閥的前置閥是電磁換向閥，而伺服閥的前置閥是動(dòng)態(tài)特性比較好的噴嘴擋板閥或射流管閥。也就是說(shuō)，伺服閥的主閥是靠前置閥的輸出壓力來(lái)控制的，而前置閥的壓力則來(lái)自于伺服閥的入口p，假如p口的壓力不足，前置閥就不能輸出足夠的壓力來(lái)推動(dòng)主閥芯動(dòng)作。而我們知道，當(dāng)負(fù)載為零的時(shí)候，如果四通滑閥*打開(kāi)，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閥來(lái)推動(dòng)主閥芯，整個(gè)伺服閥就失效了。
616223 KOMP-004-0131-1001-001-00-616223S                                       
616236 KOMP-001-0131-2015-412-00-616236X                                       
616237 KOMP-001-0131-2015-413-00-616237Y                                       
616393 KOMP-500-0211-5154-113-B1-616393V                                       
616394 KOMP-009-0280-0118-000-00-616394W                                       
616398 KOMP--502-00-616398A                                       
616422 KOMP--002-00-616422J                                       
616459 KOMP-500-0311-4060-305-B4-616459F                                       
616521 KOMP-500-0131-1072-118-25-616521M                                       
616784 KOMP-001-0124-1021-150-F1-616784V                                       
616808 KOMP--112-00-616808E                                       
616810 KOMP-006-0262-1008-002-00-616810T                                       
616819 KOMP--022-00-616819Y      
：\39526590\39529839/39529830轉(zhuǎn)8005或者8002
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\39529831\39529839\39529839-8007或者8008
/
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；單榮兵/余娟
寶德6223型伺服輔助式比例閥/BURKERT6223型比例閥
616871 KOMP-701-0131-1071-213-00-616871U                                       
616872 SET5-0131-A0-00000000-0-000-616872V                                     
616889 KOMP--101-00-616889X                                       
616892 KOMP-500-0211-5154-110-B1-616892J                                       
616906 KOMP-001-0131-2016-312-00-616906Y                                       
616907 SET5-0131-A0-00000000-0-000-616907Z                                     
616922 KOMP-500-0131-1072-118-15-616922                                        
616924 SET5-0131-00-00000000-0-000-616924R                                     
616973 KOMP-500-0311-4060-109-B4-616973S                                       
616994 KOMP-500-0311-4060-102-B4-616994Q                                       
617174 KOMP--000-00-617174S                                       
617178 KOMP-000-0340-2088-000-00-617178E                                       
617231 KOMP--220-00-617231T                                       
617233 KOMP--310-00-617233V                                       
617237 KOMP-500-1301-3034-302-01-617237Z                                       
617456 KOMP--002-00-617456V                                       
617465 KOMP--510-00-617465W                                       
617543 KOMP-012-V014-G010-094-00-617543U                                       
617578 KOMP-012-V014-G617-578-00-617578F                                       
617660 KOMP-500-0355-3204-111-00-617660M                                       
617663 KOMP-500-0311-4060-302-B4-617663C                                       
617674 KOMP-500-0311-4004-338-B4-617674F                                       
617677 KOMP-500-0311-4004-146-B4-617677A