Unloading Relief Valve
| Pilot | Model |
| Internal Pilot | HRU3-80G*KD-04 |
| HRU3-80G*KD-06 | |
| External Pilot | HRU3-80G*KED-04 |
| HRU3-80G*KED-06 |
Note : The symbol * indicates the pressure adjustment range.
1 : 2.5 to 7 Mpa
2 : 3.5 to 14 Mpa
3 : 10.5 to 21 Mpa