| Item | Part No. | Part Name | Qty | Serial No. |
| (20U-60-22223) | VALVE ASS'Y | | 12772- |
| (\0\20U-60-22222) | VALVE ASS'Y | | 9181-12771 |
| (\0\20U-60-22221) | VALVE ASS'Y | | 8001-9180 |
| | THESE ASSEMBLIES CONSIST OF ALL PARTS SHOWN IN FIGS.Y1682-01A1 TO Y1682-03A1. | | |
| NAD33316087822 | VALVE ASS'Y,MAIN RELIEF | | 8001- |
| 1 | \6\ | SLEEVE | | 8001- |
| 2 | \6\ | POPPET | | 8001- |
| 3 | NAE574130025 | SPRING | | 8001- |
| 4 | NAE114130026 | SEAT | | 8001- |
| 5 | NAC01101010010 | O-RING | | 8001- |
| 6 | \6\ | RETAINER | | 8001- |
| 7 | NAD51090205004 | POPPET | | 8001- |
| 8 | NAE574120838 | SPRING | | 8001- |
| 9 | NAE12416087901 | SCREW | | 8001- |
| 10 | NAE51414733901 | NUT | | 8001- |
| 11 | NAE14414733801 | NUT | | 8001- |
| 12 | NAE54414762001 | O-RING | | 8001- |
| 13 | NAC03100001510 | O-RING | | 8001- |
| 14 | NAC01100022010 | O-RING | | 8001- |
| NAD33415778005 | VALVE ASS'Y,SAFETY | | 9181- |
| NAD33415778005 | VALVE ASS'Y,SAFETY | | 8001-9180 |
| 15 | \6\ | RETAINER | | 8001- |
| 16 | \6\ | SLEEVE | | 8001- |
| 17 | \6\ | O-RING | | 8001- |
| 18 | \6\ | POPPET | | 8001- |
| 19 | \6\ | SPRING | | 8001- |
| 20 | \6\ | SCREW | | 8001- |
| 21 | \6\ | NUT | | 8001- |
| 22 | \6\ | NUT | | 8001- |
| 23 | \6\ | O-RING | | 8001- |
| 24 | NAE54408521204 | O-RING | | 8001- |
| 25 | \6\ | NUT | | 8001- |
| NAD33416379404 | VALVE ASS'Y,SAFETY AND SUCTION | | 9181- |
| NAD33416379404 | VALVE ASS'Y,SAFETY AND SUCTION | | 8001-9180 |
| 26 | \6\ | RETAINER | | 8001- |
| 27 | \6\ | SLEEVE | | 8001- |
| 28 | \6\ | POPPET | | 8001- |
| 29 | \6\ | O-RING | | 8001- |
| 30 | \6\ | RING,BACK-UP | | 8001- |
| 31 | \6\ | SPRING | | 8001- |
| 32 | \6\ | SEAT | | 8001- |
| 33 | \6\ | O-RING | | 8001- |
| 34 | \6\ | O-RING | | 8001- |
| 35 | \6\ | RING,BACK-UP | | 8001- |
| 36 | \6\ | POPPET | | 8001- |
| 37 | \6\ | SPRING | | 8001- |
| 38 | \6\ | SCREW | | 8001- |
| 39 | \6\ | NUT | | 8001- |
| 40 | \6\ | NUT | | 8001- |
| 41 | \6\ | O-RING | | 8001- |
| 42 | NAE54408521204 | O-RING | | 8001- |
| NAD33417057801 | PLUG ASS'Y | | 8001- |
| 43 | \6\ | PLUG | | 8001- |
| 44 | \6\ | NUT | | 8001- |
| 45 | NAE54408521204 | O-RING | | 8001- |
