| 0 | 421-S99-H170 | PRESSURE TANK | |
| 1 | 421-S99-HP01 | PRESSURE TANK | |
| 2 | 421-S99-HP02 | TWO WAY VALVE | |
| 3 | 421-S99-HP03 | SOLENOID VALVE | |
| 4 | 421-S99-HP04 | MAGNET | |
| 5 | 421-S99-HP05 | SOLENOID VALVE | |
| 6 | 421-S99-HP06 | MAGNET | |
| 7 | 421-S99-HP07 | PRESSURE VALVE | |
| 8 | 421-S99-HP08 | CHECK VALVE | |
| 9 | 421-S99-HP09 | COUPLING/CLUTCH | |
| 10 | 421-S99-HP13 | O-RING | |
| 11 | 421-S99-HP12 | BACK-UP RING | |
| 12 | 421-S99-HP15 | SEAL | |
| 13 | 421-S99-HP17 | COVER ASSEMBLY |
