Air Injection Check Valve: Labor Times
| Standard Hours | Manufacturer Warranty Hours | Skill Level | Notes | |
| Replace | ||||
| One Side | 3.5 | 2.5 | B | |
| Both Sides | 3.9 | 2.8 | B |
| Standard Hours | Manufacturer Warranty Hours | Skill Level | Notes | |
| Replace | ||||
| One Side | 3.5 | 2.5 | B | |
| Both Sides | 3.9 | 2.8 | B |