Global piping solutions and services company Victaulic has introduced Refuse-to-Fuse technology, the company’s fastest and most economical method of joining high density polyethylene pipe (HDPE). This technology was developed specifically as a new joining method for HDPE to eliminate the need to fuse.

Pipe couplings

This not only ensures that construction companies save time as a result of the lack of heating or cooling of pipe ends, but no fusing equipment is required, saving them money. The solution can be installed in any weather condition, and users do not need a fusing tent. There is no additional heating or cooling time in extreme weather conditions.

According to Marcel Ley, Regional Manager at Victaulic South Africa, Refuse-to-Fuse products all meet or exceed HDPE pressure ratings, and are able to be dragged as would a conventional fused pipe. “The pressure rating of HDPE pipe is determined by the material and the pipe wall thickness SDR or DR. ANSI size pipe is typically made to PE4710 which has pressure ratings of 333psi in SDR 7, 200psi in SDR 11 and 125 in SDR 17. ISO size pipe is typically made from PE100, which has pressure ratings of 25 bar in SDR 7, 16 Bar in SDR 11 and 10 Bar in SDR 17,” he says.

Victaulic couplings for HDPE pipe are all designed for buried services, with the company providing industry accepted coatings that protect the housings and hardware from the harsh underground environment, Ley adds.

“Plastic Pipe Institute (PPI), as well as other pipe manufacturers, publish the minimum bend radius recommended for HDPE pipes. These values vary by pipe diameter, wall thickness and material. The pipes tested with Victaulic couplings meet or exceed the pipe recommendations, meaning the joints maintained their integrity at tighter radii of curvature than recommended for the pipe itself.

Victaulic testing results indicate that there are no negative effects on the allowable tensile loads when using Victaulic couplings for HDPE pipe. Dragging HDPE pipe lengths joined with the properly installed Victaulic couplings is similar to like-size fused systems based on industry standard safe pull loads,” he says.

Victaulic claims that the technology enables the coupling to be installed up to ten times faster than conventional joining methods, resulting in reduced on-site crew time, in addition to enabling installation in locations where fusing equipment may not reach. The only major preparation required is that of a relatively square pipe end with minimal scratching or scarring to the sealing surface. Other than these requirements, no special pipe handling is required, Ley says.

 “Unlike fusing, the pipe ends can be wet, cold or warm since the coupling is not sensitive to humidity or temperature variations. The ‘perfection’ of facing HDPE pipe for butt fusing (scraping the oxide layer and exact squaring of the end) is not required for Victaulic HDPE couplings. The pipe ends do not need to be wiped down with cleaning agents to remove dirt and oil, nor is there a scraping requirement to remove the outer oxide layer that must be done to electrofuse pipe.”

Image credit: https://www.victaulic.com/system/refuse-to-fuse/


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