2.FEED GROUP (RE XRORH RS12) 2/2 1 3 2 1 2 3 3 1. LS relief valve: overflow LS oil line working pressure 2. Flush valve: Medium standby pressure: fast response and accumulator pressure loss to ensure machine action The median flushing Combined with LS relief valve, it acts as the main relief valve of the system 3. Flow control valve: release LS oil pressure 4. System pressure: LS overflow pressure + flushing valve pressure 2-9