Bellow sealed valve and actuator assembly used in low level plumbing.
| Bill Of Materials | Qty | Unit | Total | Notes |
| 4BSV with vacuum stem tip | 1 | ea | 559.84 | |
| actuator bellows sealed valve | 1 | ea | 219.22 | |
| labor assembly/fabrication (min) | 5 | min | 4.60 | |
| 4BSV + actuator | 1 | ea | 783.66 |