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Old 01-26-08, 02:18 PM   #1
Niles H.
eternalvoyage
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Backup or Alternative Fuel-pressurization System

For a backup, alternate, or replacement pressurization system for stove fuel, a presta valve can be installed fairly easily and quickly, without special tools.

This would allow for pressurization using any suitable bike pump. (A mini pump would be one of the options.)

*****
Why do this?

--Broken or damaged pump.

--Malfunctioning pump.

--Lost or missing part(s).

--Some potential for saving on weight, and on space.

--More space for fuel.

--A backup system in case of problems when far afield.

--Etc.

---Or: just to do it.

*****
Maybe someone knows of plans or diagrams; if so, please post.

Here is one way to do it [there may be others -- please feel free to post any ideas or possible improvements]:

---Remove a (fully threaded) presta valve from an old tube.

---Drill a hole near the top of one empty fuel container or canister. Match the diameter of the hole to the diameter of presta valve.
(With some stoves, the lid could be drilled instead; or a second lid could be drilled.)
(There are other simple hand tools, besides a drill, that can also do the job, especially with aluminum.)
(It is probably best to position the hole so it is facing up when stove is in use.)

---Secure presta valve to canister.

*****
There are various ways of securing the valve to the canister. Here are some possibilities:

Use two nuts (or two nyloc nuts, or doubled nuts, to prevent movement), one inside the canister and one outside -- clamping the wall of the canister between them, and sealing the system.

Since it is a pressurized system, taking extra care to ensure a good seal is in order.

Using materials designed to work with automotive fuel systems -- materials designed not to degrade when exposed to fuels -- is in one option.

'Liquid gasket' materials can be used.

If other types of gaskets are used, special attention to sealing the thread/nut interfaces is in order. Various types of sealants could be used.

*******
[Thanks go out to Tzuo for a thread-sparking predicament.]

Last edited by Niles H.; 01-26-08 at 06:18 PM.
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