Worth every penny! Add this to your Hand-held or Backpack Flamer to regulate fuel release and to help keep your tank from freezing (not for the Sievert Flamer). Due to the relationship of temperature to pressure and volume, propane will freeze if you use a lot of fuel at once or if you let the fuel level drop too low. Squeeze-valve allows you to release fuel as desired, while the pilot keeps the flamer lit, with minimum fuel output.
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.