Fusing Fusible C-900®, Fusible C-905®, FPVC® and Duraliner™
For more information on the fusion process, see the Butt Fusion Technical Sales Bulletin (here)
In Pit Fusion
When the host pipe is too deep for above ground fusion, joining of the starting stock is done in the pit at the elevation of the host pipe. Fusion can be done over a variety of lengths. Factors determining the length of starting stock are weight, sub-surface configuration, or maximum size of pit allowed. Trench boxes may be needed as shoring to allow safe access into the pit. General guidelines suggest shoring for pits deeper than 4'-6".
|Starting Stock Lengths||Pit Length*||Pit Width*|
|Fusion - 10'||15'||4'|
|Fusion - 20'||25'||4'|
|Fusion - 30'||35'||4'|
|Fusion - 40'||45'||4'|
*Length and width of pit at bottom of pit or inside of shoring.
Click here for detailed pit layout information for the T-500.
Click here for detailed pit layout information for the T-900.
Pipe being positioned into fusion machine
Pipe being faced for fusion
Fusible C-900®, Fusible C-905®, FPVC®: Joint Features
- Fusion process is patented and unique to PVC--pressure, temperature, and time of certain steps differ from other thermoplastic material fusion processes.
- Joints are fused with standard heat fusion equipment that is in good condition and modified for PVC.
- Third party testing of the fused joint for tensile strength and other properties has and continues to be conducted by Hauser Labs, Boulder CO.
- Tensile strength of the fused joint equals the tensile strength of the pipe.
- Tests have been performed in accordance with ASTM D-638 methods.
- Fusion times are equal to other thermoplastic materials.
- Joints are fully restrained.
- The external bead can be removed to eliminate a possible sticking point during pull-in of an HDD or a slipline application.