Air Injection Check Valve: Labor Times
| Standard Hours | Manufacturer Warranty Hours | Skill Level | Notes | |
| Replace | ||||
| One | 0.7 | 0.4 | B | |
| Two | 0.9 | 0.6 | B | |
| Three | 1.1 | 0.8 | B |
| Standard Hours | Manufacturer Warranty Hours | Skill Level | Notes | |
| Replace | ||||
| One | 0.7 | 0.4 | B | |
| Two | 0.9 | 0.6 | B | |
| Three | 1.1 | 0.8 | B |