This attachment is the perfect addition to the backpack weed burner we purchased (PWC511). It give me more control over the amount of gas used. The gas has lasted much longer than before we had it.

This is a great addition to my propane torch. In the past, I had to adjust the dial on the propane tank to use high flow and then adjust it to low when I just want to keep the torch going on low. Now I can adjust the the pilot to low, and compress the all brass squeeze valve when I want a high rate of propane and a hot torch. When I release the squeeze valve, it goes back on the pilot. It is so convenient and it saves a lot of propane and helps keep the tank from freezing up when you need to do a lot of flaming.