Recently we received a request for some “giant elbows, about a 15 ft. radius to load material up a silo. This was hard for me to comprehend— for these bends would be not only huge but bent three-dimensionally. When the prints and drawings came in this seemed impossible. What they wanted was a Silo Helix.
So, we made a suggestion. Rather than bend these sweeps three-dimensionally, we could make these large bends in two dimensions and pivot them on the tangents. We made a simple model shown below.
Model accepted: Then we went ahead to make the bends. The one pictured above is 70° on a 192” CLR.
These bends are composed of our Provista PETG tubing, 4.75” OD x .250 w. This tubing is FDA-approved and NSF compliant for food transport.
We were amazed at the result and happy to have a part in this.
