Those pressures should be fine but like was mentioned, there should be a chart on the Victor site or with the rosebud. Pressures aren't as critical with a rosebud using propane. Propane does have a max. withdraw rate but it is high enough that you won't have any problems like you would with acetylene. Acetylene also has a max. pressure of 15 PSI. One of the reasons for using higher pressures on a rosebud is the flow of the gasses helps to cool the tip preventing backfires which is why you don't throttle back the valves too much if you only need a little heat. Rosebuds should be at least 75% open.
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Today's Featured Article - Old Time Threshing - by Anthony West. A lovely harvest evening late September 1947, I was a school boy, like all school boys I loved harvest time. The golden corn ripens well and early, the stoking, stacking,.... the drawing in with the tractors and trailers and a few buck rakes thrown in, and possibly a heavy horse. It would be a great day for the collies and the terrier dogs, rats and mice would be at the bottom of the stacks so the dogs, would have a busy time hunting and killing, all the corn was gathered and ricked in what we c
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