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Solvent Set and Cure Schedule Guideline
The Average Initial Set Schedule
It refers to the required amount of time that should be given before the joint can be handled with caution.
Note: In damp or humid weather, it is recommended to allow an additional 50% more set time.
| Temperature Range | ½” to 1¼” | 1½” to 2” | 2½” to 6” |
|---|---|---|---|
| 16°C to 38°C | 2 minutes | 5 minutes | 30 minutes |
| 5°C to 16°C | 5 minutes | 10 minutes | 2 hours |
| -18°C to 5°C | 10 minutes | 15 minutes | 12 hours |
The Average Joint Cure Schedule
It refers to the required amount of time that should be allowed before pressurising the system.
Note: In damp or humid weather, it is recommended to allow an additional 50% more set time before pressurising the system.
| Temperature Range | ½” to 1¼” | 1½” to 2” | 2½” to 6” | |||
|---|---|---|---|---|---|---|
| Up to 11 Kg/cm² | 11 to 22 Kg/cm² | Up to 11 Kg/cm² | 11 to 22 Kg/cm² | Up to 11 Kg/cm² | 11 to 22 Kg/cm² | |
| 16°C to 38°C | 15 minutes | 6 hours | 30 minutes | 12 hours | 1 – 1½ hours | 24 hours |
| 5°C to 16°C | 20 minutes | 12 hours | 45 minutes | 24 hours | 4 hours | 48 hours |
| -18°C to 5°C | 30 minutes | 48 hours | 1 hour | 96 hours | 72 hours | 8 days |
Pipe Derating Factor
Pipe Derating Factor
This table shows how the working temperature affects the derating factor for pipes.
As the temperature increases, the derating factor decreases, reducing pipe strength.
| Working Temperature (℉) | Working Temperature (℃) | Pipe Derating Factor |
|---|---|---|
| 73–80 | 23–27 | 1.00 |
| 90 | 32 | 0.91 |
| 100 | 38 | 0.82 |
| 120 | 49 | 0.65 |
| 140 | 60 | 0.50 |
| 160 | 71 | 0.40 |
| 180 | 82 | 0.25 |
