各机构区别
先导型溢流阀的导阀部分结构尺寸较小，调压弹簧不必很强，因此压力调整比较轻便。但因先导型溢流阀要在先导阀和主阀都动作后才能起控制作用，因此反应不如直动型溢流阀灵敏。
与三节同心结构相比，二节同心结构的特点是：①主阀芯仅与阀套和主阀座有同心度要求，免去了与阀盖的配合，故结构简单，加工和装配方便。②过流面积大，在相同流量的情况下，主阀开启高度小；或者在相同开启高度的情况下，其通流能力大，因此，可做得体积小、重量轻。③主阀芯与阀套可以通用化，便于组织批量生产。
台湾七洋7OCEAN电液比例阀部分型号：
EBG-20-C-S-10 EBG-10-C-S-10 EBG-30-C-S-10
EBG-20-A-S-10 EBG-10-A-S-10 EBG-30-A-S-10
EBG-20-H-S-10 EBG-10-H-S-10 EBG-30-H-S-10
EBG-20-C-10 EBG-10-C-10 EBG-30-C-10
EBG-20-A-10 EBG-10-A-10 EBG-30-A-10
EBG-20-H-10 EBG-10-H-10 EBG-30-H-10
EFBG-03-125-C-S-10 EFBG-03-125-H-S-10 EFBG-03-125-S-10
EFBG-06-250-C-S-10 EFBG-06-250-H-S-10 EFBG-06-250-S-10
EFBG-10-500-C-S-10 EFBG-10-500-H-S-10 EFBG-10-500-S-10
EFBG-03-125-C-10 EFBG-03-125-H-10 EFBG-03-125-10
EFBG-06-250-C-10 EFBG-06-250-H-10 EFBG-06-250-10
EFBG-10-500-C-10 EFBG-10-500-H-10 EFBG-10-500-10
台湾七洋7OCEAN机械换向阀（凸行程换向阀）部分型号：
CDV-G02-2A-1-20-R CDV-G02-0A-1-20-R CDV-G02-22A-1-20-R
CDV-T02-2AL-1-20-R CDV-T02-0AL-1-20-R CDV-G02-22AL-1-20-R
CDV-T02-2A-1-20-R CDV-T02-0A-1-20-R CDV-T02-22A-1-20-R
CDV-T02-2AL-1-20-R CDV-T02-0AL-1-20-R CDV-T02-22AL-1-20-R
CDV-G02-2A-0-20-R CDV-G02-0A-0-20-R CDV-G02-22A-0-20-R
CDV-G02-2AL-0-20-R CDV-G02-0AL-0-20-R CDV-G02-22AL-0-20-R
CDV-T02-2A-0-20-R CDV-T02-0A-0-20-R CDV-T02-22A-0-20-R
CDV-T02-2AL-0-20-R CDV-T02-0AL-0-20-R CDV-T02-22AL-0-20-R
CDV-G02-2A-1-20-Y CDV-G02-0A-1-20-Y CDV-G02-22A-1-20-Y
CDV-G02-2AL-1-20-Y CDV-G02-0AL-1-20-Y CDV-G02-22AL-1-20-Y
CDV-T02-2A-1-20-Y CDV-T02-0A-1-20-Y CDV-T02-22A-1-20-Y
CDV-T02-2AL-1-20-Y CDV-T02-0AL-1-20-Y CDV-T02-22AL-1-20-Y
CDV-G02-2A-0-20-Y CDV-G02-0A-0-20-Y CDV-G02-22A-0-20-Y
CDV-G02-2AL-0-20-Y CDV-G02-0AL-0-20-Y CDV-G02-22AL-0-20-Y
CDV-T02-2A-0-20-Y CDV-T02-0A-0-20-Y CDV-T02-22A-0-20-Y
CDV-T02-2AL-0-20-Y CDV-T02-0AL-0-20-Y CDV-T02-22AL-0-20-Y
台湾EALY弋力叶片泵 台湾EALY弋力办事处
台湾EALY弋力总经销 台湾EALY弋力代理
PV2R1-6-F-RAA PV2R1-8-F-RAA,
PV2R1-10-F-RAA PV2R1-12-F-RAA,
PV2R1-14-F-RAA PV2R1-17-F-RAA,
PV2R1-19-F-RAA PV2R1-23-F-RAA,
PV2R1-25-F-RAA PV2R1-31-F-RAA,
PV2R1-6-F-LAA PV2R1-8-F-LAA,
PV2R1-10-F-LAA PV2R1-12-F-LAA,
PV2R1-14-F-LAA PV2R1-17-F-LAA,
PV2R1-19-F-LAA PV2R1-23-F-LAA,
PV2R1-25-F-LAA PV2R1-31-F-LAA,
PV2R1-6-L-RAA PV2R1-8-L-RAA,
PV2R1-10-L-RAA PV2R1-12-L-RAA,
PV2R1-14-L-RAA PV2R1-17-L-RAA,
PV2R1-19-L-RAA PV2R1-23-L-RAA,
PV2R1-25-L-RAA PV2R1-31-L-RAA,
PV2R1-6-L-LAA PV2R1-8-L-LAA,
PV2R1-10-L-LAA PV2R1-12-L-LAA,
PV2R1-14-L-LAA PV2R1-17-L-LAA,
PV2R1-19-L-LAA PV2R1-23-L-LAA,
PV2R1-25-L-LAA PV2R1-31-L-LAA.
高压定量叶片泵PV2R1-10-F-RAA,
PV2R1-12-F-RAA,PV2R1-14-F-RAA,
高压定量叶片泵PV2R2-26,PV2R2-33,
叶片泵PV2R2-41 叶片泵PV2R2-47 叶片泵PV2R2-53 叶片泵PV2R2-59
叶片泵PV2R2-65 叶片泵PV2R2-75 叶片泵PV2R2-26-F-RAA
PV2R2-33-F-RAA PV2R2-41-F-RAA
PV2R2-47-F-RAA PV2R2-53-F-RAA,
PV2R2-59-F-RAA PV2R2-65-F-RAA,
PV2R2-75-F-RAA PV2R2-26-F-LAA,
PV2R2-33-F-LAA PV2R2-41-F-LAA,
PV2R2-47-F-LAA PV2R2-53-F-LAA,
PV2R2-59-F-LAA PV2R2-65-F-LAA,
PV2R2-75-F-LAA PV2R2-26-L-RAA,
PV2R2-33-L-RAA PV2R2-41-L-RAA,
PV2R2-47-L-RAA PV2R2-53-L-RAA,
PV2R2-59-L-RAA PV2R2-65-L-RAA,
PV2R2-75-L-RAA PV2R2-26-L-LAA,
PV2R2-33-L-LAA PV2R2-41-L-LAA,
PV2R2-47-L-LAA PV2R2-53-L-LAA,
PV2R2-59-L-LAA PV2R2-65-L-LAA.
PV2R2-75-L-LAA