... kinds of hydraulic systems Yuken EBG of EBG-03,EBG-06,EBG-10 Proportional Electro-hydraulic Relief Valve1. Totally interchangeable with original2 ... . For different kinds of hydraulic systems3. Nominal size:03,06,104. ... 1 year of warranty Yuken EBG of EBG-03,EBG-06,EBG-10 Proportional Electro-hydraulic Relief Valve