Comparison of Fusible PVC™ and Bell & Spigot PVC
Material Properties of PVC and Bell & Spigot PVC
The material properties of Fusible PVC™ and Bell & Spigot PVC are identical with the exception of material weight and the type of restraints. Bell & Spigot PVC provides a slightly higher material weight due to the bell end of the pipe. In addition, Fusible PVC™ is fully restrained, meaning no fittings are required, whereas bell restraint harnesses are required for Bell & Spigot PVC. The drawings below more clearly illustrates these material properties:
8" DR 25 Fusible PVC™ versus 8" DR 25 B&S PVC
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Pressure Class Comparison
| Fusible PVC™ | Bell & Spigot PVC | ||
|---|---|---|---|
| Dimension Ratio | Pressure Rating | Dimension Ratio | Pressure Rating |
| DR 18 | 235 PSI | DR 18 | 235 PSI |
| DR 21 | 200 PSI | DR 21 | 200 PSI |
| DR 25 | 165 PSI | DR 25 | 165 PSI |
| DR 32.5 | 125 PSI | DR 32.5 | 125 PSI |
| DR 41 | 100 PSI | DR 41 | 100 PSI |
| DR 51 | 80 PSI | DR 51 | 80 PSI |
Sample Pipe Comparisons
- Direct Bury / Open Cut
Fusible PVC™ will require a more narrow trench width for direct bury than Bell & Spigot PVC, due to the larger outer diameter on the Bell & Spigot PVC. A smaller trench volume means that there will be less excavatopm, less backfilling and less spoil disposal. The drawing below illustrates theses advantages.
- Jack & Bore
Fusible PVC™ is fully restrained, so no restraint hardware is required. In addition to a larger Outer Diameter, Bell and Spigot PVC requires restraints at each joint, causing in upsize in casing for Jack & Bore. The comparisons below illustrate these significant differences.