Instruction: Evaluate the answerability of a question by analyzing the related document, outputting yes if the document contains information addressing the question, and no otherwise.

Input:
Question: Does this work well with regular grill propane tanks? I saw in the comments that the flow regulators dampen the power of this torch. Is this true?
Document: I bought this to not only kill weeds, but melt snow and ice. We had our first storm, I hooked it up, and only a weak yellow flame came out. It did turn the snow black, but didn't melt it. What I discovered is that our government mandated flow restrictors on all the new 20lb propane tanks. This torch needs high pressure, and the new cylinders can't provide enough flow to make it work. I did hook it to a 100lb tank which doesn't have the new valve configuration.
I got this for Christmas, assembled it and couldn't hardly get it to work. Then I read the instructions. It turns out that all propane tanks up to 100lbs have to have auto shutoff valves on them. So the trick is to make sure the Red Dragon valve is completely shut, then slowly open the tank valve and let the pressure build up in the line. Then slightly open the Red Dragon valve and light the torch. Then you can open it wide open and hear the roar.
I bought this higher BTU torch because it seemed to be a better value than the lower rated ones. It's power is impressive. I rarely open the valve all the way. When I do, it sounds like the NASA test range. The heat is plenty for the toughest jobs. I had a 4" slab of ice in my parking area this winter and was able to carve a drainage trench in it pretty quickly. Still, the propane consumption seemed very reasonable.
Great device for flame weeding garden beds....I usually attach  it to the 7 lb propane tanks that I have.Some people put the tank in a back pack some put a 20 pounder on a dolly.Read Elliot Coleman's first book to learn more about flame weeding.
The product assembled easily and quickly. The connector was soemwhat hard to tighten down and required two wrenches to keep it in place and then to tighten it. The valve did not work correctly initially, and I had to open and close it a dozen times until the unit fired up properly. I do recommend when one uses the unit to wear an insulated glove as the pipe gets very cold when you are flaming. Now that it is set up, it works very well.
I disintegrated an aluminum can in about 8 seconds. It burns wood almost instantly.It's easy to assemble ( don't miss the instructions, the package labeling unfolds ) and easy to light. I didn't buy the cart which is like $70! you can buy a nice dolly for $30 and use it for other things as well. Just get you some straps to strap it on. However, I strap the propane tank down to the front rack of my fourwheeler and use that to carry my 20lb tank around.
Bought the 500,000 BTU VT 3-30 to melt ice on my driveway here in Colorado. Assembled in just a few minutes sitting on my sofa watching TV, attached to a 20 lb propane tank, opened the valve SLOWLY, as instructed, and lit it off. Opened the valve on the handle and went to work melting ice. While the hard, thick ice took a little more attention, the end result was as expected and much easier than using the chipper.
I just got to use this for the first time. Being the A-typical man naturally I went with the "bigger is better" mantra and purchased the most powerful torch Red Dragon makes. After my first use I can honestly say you should probably think twice about the 500,00 BTUs, it is a tremendous amount of fire power. Along with the torch I also added the squeeze lever/handle. The combination makes an almost scary powerful flame thrower.
This product works well. I like the long, 10 foot hose which allows you to move around a good bit without dragging the tank around. Even so, another 5 feet of hose would be nice. Also, another few inches of length in the torch itself would be nice. For tall fellows, the shaft could be a bit longer.The directions to put the thing together were good, but putting it together was a bit difficult. The fittings are VERY tight.
I bought this as a way to reduce weeds from growing, but also to torch the ice created on my front porch since it faces north and builds up. You cannot really expect to melt your whole driveway with this as it takes too long, but it works for smaller areas. I put a propane tank on a dolly and roll it out to torch the walkway. I will warn you don't do this while it snows as it will just ice over again right away.
Answer: yes