The Alpenglow Gear Alpenflow Fuel Transfer Valve is the lightest way to move fuel between two gas canisters. Borrow fuel, split canisters amongst friends or consolidate your pile of half-filled canisters.

How to use:
1 - Warm your donor canister and/or cool your recipient canister. This transfer requires a pressure difference to push the upper liquid fuel down into the lower canister. The donor canister can be warmed in the sun but never use an oven or flame! 
2 - Place the warm gas canister on TOP and the cool canister on the BOTTOM.
3 - Press down hard for 5-10 seconds.
4 - Repeat as needed. Once the warm donor fuel mixes and heats the lower liquid fuel sufficiently, the transfer will slow and eventually stop. Never fill beyond the original fill level.