72701 Hartford Loop Assembly is for the following models.
| Make | Model | Date Range |
| Hot Spring | Grandee | 2001-2002 |
| Hot Spring | Vanguard | 2001-2002 |
| Hot Spring | Jetsetter | 2001-2002 |
| Hot Spring | Prodigy | 2001-2002 |
| Hot Spring | Sovereign | 2001-2002 |
| Hot Spring | Landmark | 2001-2002 |
| Endless Pools | E2000-58 | 2017-Current |
| Endless Pools | E500-52 | 2016-Current |
| Endless Pools | E500-58 | 2016-Current |
| Endless Pools | E700-52 | 2016-Current |
| Endless Pools | E700-58 | 2016-Current |
| Endless Pools | X200-50 | 2016-Current |
| Endless Pools | X500-50 | 2016-Current |
| Item | Description | Part # |
| 1 | CHECK VALVE/ADAPTER ASSY | 70289 |
| 2 | HARTFORD LOOP ASSEMBLY 01-C | 72701 |
| 3 | CHECK VALVE W/BALL 1/2IN | 38390 |
| 4 | AIR CHECK VALVE ASSY, L/M/N | 33738 |
| 5 | CHECK VALVE BULLET 3/4IN | 35233 |
| 6 | M-64-P ADPT,MHTxSOC,3/4x1/2 | 30702 |
| 7 | CHECK VALVE 3/4 | 302364 |
| 8 | VALVE WATER CHECK 1/2" | 70173 |
| 9A | VALVE, CHECK 1.5" | 71980 |
| 9B | VALVE, CHECK 1.5" W/SPRING | 71981 |
