宝德6223型伺服辅助式比例阀/BURKERT6223型比例阀
宝德6223型伺服辅助式比例阀的主阀般来说和换向阀样是滑阀结构，只不过阀芯的换向不是靠电磁铁来推动，而是靠前置阀输出的液压力来推动，这点和电液换向阀比较相似，只不过电液换向阀的前置阀是电磁换向阀，而伺服阀的前置阀是动态特性比较好的喷嘴挡板阀或射流管阀。也就是说，伺服阀的主阀是靠前置阀的输出压力来控制的，而前置阀的压力则来自于伺服阀的入口p，假如p口的压力不足，前置阀就不能输出足够的压力来推动主阀芯动作。而我们知道，当负载为零的时候，如果四通滑阀*打开，p口压力=t口压力+阀口压力损失（忽略油路上的其它压力损失），如果阀口压力损失很小，t口压力又为零，那么p口的压力就不足以供给前置阀来推动主阀芯，整个伺服阀就失效了。
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转8005或者8002
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\39529831\39529839\39529839-8007或者8008
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公司;www.shqiantuo.com
；单荣兵/余娟
宝德6223型伺服辅助式比例阀/BURKERT6223型比例阀
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