Reducing coupling

| 3/4*1/2 | 21.5 | 27.5 | 17.6 | 26.8 | 32.8 | 18.6 | 64.6 | PA17001 |
| 1*3/4 | 26.7 | 33.5 | 26.0 | 33.6 | 40.0 | 27.8 | 90.9 | PA17003 |
| 2*3/2 | 48.4 | 56.6 | 34.0 | 60.6 | 69.0 | 40.0 | PA17015 | |

| 3/4*1/2 | 21.5 | 27.5 | 17.6 | 26.8 | 32.8 | 18.6 | 64.6 | PA17001 |
| 1*3/4 | 26.7 | 33.5 | 26.0 | 33.6 | 40.0 | 27.8 | 90.9 | PA17003 |
| 2*3/2 | 48.4 | 56.6 | 34.0 | 60.6 | 69.0 | 40.0 | PA17015 | |