Alpenglow Gear - Alpenflow Fuel Transfer Valve

Move your fuel between canisters with a device that weighs less than a penny. The Alpenflow was dreamt up along the Pacific Crest Trail in 2023, after seeing piles of semi-filled rusting fuel canisters in hiker boxes. You can borrow fuel from hiker boxes, split canisters amongst friends, or consolidate your pile of half-filled canisters.

Specs:

• Weight: 2.4g (0.09oz)
• Works with all threaded isobutane canisters (built per EN 417)
• 100% Made in USA
• A refrigerator or direct sunlight also needed to drive transfer

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, never use an oven or flame

   • The larger the difference, the faster the transfer will run

2. Place Warm Canister on TOP, Cool Canister on BOTTOM (no threading needed)

3. Press Down Hard for 5 - 10 seconds

4. Repeat as Needed, especially if filling a near-empty lower canister.

   • Once the warm donor fuel mixes & heats the lower liquid fuel sufficiently, the transfer will slow and eventually stop.

Warnings & Safety:

• To mitigate the risk of liquid butane expanding when canister is heated, never fill beyond the original fill level (~80%)

• Fuel canisters do not meet D.O.T. requirements for commercial transportation after refilling (a.k.a. it’s illegal for businesses to transport refilled canisters)

• Never use a flame or oven to heat canisters

• Never fill canisters with pure propane, and only transfer “winter mix” fuel (70% butane / 30% propane) into canisters rated for winter mix fuel.