Size Your System by the Main Water Line Size
Most plumbing codes dictate that the pipe diameter to the softener cannot be smaller than the pipe diameter throughout the home.
| Flow Rate at | |||
|---|---|---|---|
| Water Pressure | 48,000 grain (3/4" line) | 70,000 grain (1" line) | 90,000 grain (1 1/4" line) |
| 35 psi | 12.1 | 15.6 | 18.0 |
| 45 psi | 14.3 | 20.0 | 21.5 |
| 55 psi | 15.7 | 21.5 | 22.2 |
| 65 psi | 17.4 | 21.5 | 17.4 |
| 75 psi | 19.5 | 23.0 | 19.5 |
| 85 psi | 22.0 | 25.0 | 22.0 |