Air Injection Check Valve: Labor Times
| Standard Hours | Manufacturer Warranty Hours | Skill Level | Notes | |
| Replace | 0.4 | 0.2 | B | |
| Check & Cut Valve | 0.7 | 0.4 | B |
| Standard Hours | Manufacturer Warranty Hours | Skill Level | Notes | |
| Replace | 0.4 | 0.2 | B | |
| Check & Cut Valve | 0.7 | 0.4 | B |