▸Run the pipe so it slopes upwards toward the pump to prevent the formation of air pockets.
▸ IF the pipe tapers, the pipe must slop downward toward the pump. Place a shut-off.
▸ Valve between the float chamber and mp to prevent overpressure on the mp.
▸ Use the least possible number of bends.
▸ Bends must have the largest possible radius.
The pipe system must be completely airtight.
| NOMINAL | SIZE | Internal Diameter | TOLERANCES | WALL THICKNESS (±0.75) | WORKING PRESSURE @ 27°C | BURSTING PRESSURE @ 27°C | STANDARD LENGTHS |
|---|---|---|---|---|---|---|---|
| 0.75” | 20 | 20 | ±0.75 | 2.5 | 7.5 | 18 | 30 |
| 1” | 25 | 25 | ±1.25 | 2.5 | 7.5 | 18 | 30 |
| 1.25” | 30 | 32 | ±1.25 | 2.5 | 6.5 | 15 | 30 |
| 1.5” | 40 | 38 | ±1.50 | 2.5 | 6.0 | 14 | 30 |
| 2” | 50 | 50 | ±1.50 | 3.5 | 5.1 | 13 | 30/40 |
| 2.5” | 65 | 63 | ±1.50 | 4.0 | 5.1 | 13 | 30/40 |
| 3” | 75 | 75 | ±2.00 | 4.0 | 4.1 | 11 | 30/40 |
| 4” | 100 | 100 | ±2.00 | 5.0 | 3.5 | 10 | 30 |
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