| Item | Part No. | Part Name | Qty | Serial No. |
| 1 | 421-64-H1110 | BY-PASS VALVE | ||
| 1A | HOUSING | |||
| 2 | CONTROL SLIDE | |||
| 3 | 421-64-H0P23 | POPPET | ||
| 4 | 421-64-H0P24 | COMPRESSION SPRING | ||
| 5 | 421-64-H0P25 | O-RING | ||
| 6 | 421-64-H0P26 | PLUG | ||
| 7 | 421-64-H0P27 | COMPRESSION SPRING | ||
| 8 | 421-64-H0P28 | O-RING | ||
| 9 | 421-64-H0P29 | CONNECTOR | ||
| 10 | 421-64-H0P30 | BELLOWS | ||
| 11 | 421-64-H0P31 | STRIPPER | ||
| 12 | 421-64-H0P37 | DISC | ||
| 13 | 421-64-H0P33 | PLUG |