Stack of valves that controls flow of air to graphite reactors.
| Bill Of Materials | Qty | Unit | Notes |
| AVP-31 stacking hardware kit | 8 | ea | |
| labor assembly/fabrication (min) | 30 | min | |
| solenoid valve air 120 VAC | 9 | ea | |
| solenoid valve stack (9) | 1 | ea |
| Used on | Qty |
| air manifold 9 port | 1 |