Hydronic Pipe Capacity: CPVC
Hydronic system pipe capacity data — maximum recommended flow rate (GPM), velocity, friction loss, and inside diameter for closed-loop HVAC hydronic systems by pipe material and nominal size
| pipe material | nominal size in | friction loss ft per 100ft (ft/100ft) | inside diameter in (in) | max recommended gpm (gpm) | notes | pipe roughness ft (ft) | velocity at max gpm fps (fps) |
|---|---|---|---|---|---|---|---|
| CPVC | 0.5 | 11.5 | 0.526 | 1.8 | CPVC ASTM F441/F442; max temp 200F; schedule 80 wall | 0.000005 | 5.3 |
| CPVC | 0.75 | 12 | 0.722 | 3.5 | 3/4-in CPVC; corrosive application alternative to copper | 0.000005 | 8.6 |
| CPVC | 1 | 11.5 | 0.936 | 6 | 1-in CPVC; chemical or mildly corrosive loops | 0.000005 | 8.9 |
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