How To Vent An Un-Vented Gas Can

Slow delivery on vented nozzles. The best bet is a separate vent, but that's gone out of style because it - well, it vents.
 
Skylane81E said:
What would have been wrong with a one way valve on the vent?
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It's complicated. The idea was a zero vapor method, and then go from there. In a tank without a vent when in use the vapor escaping from the destination tank(like in your car) while being filled would be exchanged with the fuel being delivered from the source can in your hand. And the vapor in the jug would come from the vapor escaping from the destination tank. So, you would fill the tank with gas, leaving behind a smaller air chamber, the that air coming out of the tank would go into the jug in your hand, thus not allowing any/much fuel vapor into the atmosphere.

That was the theory. As we all know, it doesn't work out that way much of the time unless you have that fancy white nozzle on the jug, and it fits snuggly into your filler neck on the car, and you operate the handle perfectly, and don't spill any, and you maintain positive pressure against the filler neck, and the moon is in it's waxing gibbous phase, and your kids have done their homework, etc.
 
Skylane81E said:
What would have been wrong with a one way valve on the vent?
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Costs too much to manufacture. Even so, I don't like those idiotic squeeze handles. I shouldn't have to use two hands to pour gas out of a can. And on my weed trimmer, I have to hold on to the trimmer so it doesn't tip over while filling.
 
Henning said:
Yep, here's a perfect single handed operation gas can.

http://www.tractorsupply.com/en/store/scepter-duramax-flo-n-go-14-gal-cap

For a few extra bucks you can even rig it with a pump.
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Weenie pump.

Here is my pump set up. Go big or go home.

fuel_tank.JPG
 
Geico266 said:
Weenie pump.

Here is my pump set up. Go big or go home.

fuel_tank.JPG
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Nice, but in CA that's about 37 violations. Get caught with fuel in it driving on a public road(or maybe even private) and you're gonna be paying the state a nice check. :wink2:
 
docmirror said:
Nice, but in CA that's about 37 violations. Get caught with fuel in it driving on a public road(or maybe even private) and you're gonna be paying the state a nice check. :wink2:
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Considering it's got a plastic bowl on the sep filter, if it has gasoline in it, you may lose it.
 
What about the fuel tanks farmers mount in their pickup trucks to fill up tractors? Too big for me but for fueling an airplane with MoGas it might be a good option.
 
cowman said:
What about the fuel tanks farmers mount in their pickup trucks to fill up tractors? Too big for me but for fueling an airplane with MoGas it might be a good option.
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None of those tank/pump set ups are rated for gasoline, they are all restricted to Kero/Diesel or other low volatility fuels.
 
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Geico266 said:
The pumps and tanks are rated for gas. I'm not following you. :dunno:


You don't need DOT permission to mount a farm tank in the bed of your PU.....yet anyway. :dunno:

Buy tank, mount, add pump, fill, good to go. :D

http://www.tractorsupply.com/en/store/m-3025-ad-fuel-pump-4-10-hp-1-in?cm_vc=-10005

http://www.tractorsupply.com/en/store/delta-steel-transfer-tank-98-gal?cm_vc=-10005
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You need it to be properly rated for hauling fuel on public highways, same as scuba or welding type gas tanks.
 
Henning said:
You need it to be properly rated for hauling fuel on public highways, same as scuba or welding type gas tanks.
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The container may need to meet DOT standards (and they already do) but the PU does not. Not for private consumption / use; IE when refueling bobcats, farm equipment, lawn care equipment, ect.

And clearly my homemade trailer is not DOT certified, but around here no one cares because I live on a "farm", actively farm, and make enough money to maintain my "agricultural status". Therefore, I am a farmer! ;)
 
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I vented my tanks in a similar way, but I just used a brass nipple screwed in the same location as this guy had his schrader valve. A 3/8" nipple will vent fast enough to empty a 7 gallon can very fast. 1/4" nipples slow the flow down a little. The plastic is pretty thick on that seam, so if you drill the hole the right size a threaded brass nipple will screw in tightly and won't leak even without sealant.

I use a ~4" piece of clear tubing, plugged at one end to cap the nipple except when I'm pouring.
 
We used those unvented cans all week at OSH, filling the generator at our campsite.

Between the group of 8 of us, I will bet we spilled a full gallon of gas onto the sacred North 40 soil. Our idiot Ruling Class overlords have, as usual, made the made-up problem that they were trying to "solve" exponentially worse.

We eventually punched holes in the cans with an awl.

Sent from my Nexus 7 using Tapatalk 2
 
It may save the air quality, but I usually spill about a gallon in the lake when I fill my boat up trying to get the cans to vent. I tried to explain the physics to my kids when they wanted to know why it take so long.
 
teethdoc said:
It may save the air quality, but I usually spill about a gallon in the lake when I fill my boat up trying to get the cans to vent. I tried to explain the physics to my kids when they wanted to know why it take so long.
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Well at least you've now figured out the education program of the idiot rulemakers. If they make rules that dumb, parents are forced to home-school! LOL!!!
 
Geico266 said:
The pumps and tanks are rated for gas. I'm not following you. :dunno:


You don't need DOT permission to mount a farm tank in the bed of your PU.....yet anyway. :dunno:

Buy tank, mount, add pump, fill, good to go. :D

http://www.tractorsupply.com/en/store/m-3025-ad-fuel-pump-4-10-hp-1-in?cm_vc=-10005

http://www.tractorsupply.com/en/store/delta-steel-transfer-tank-98-gal?cm_vc=-10005
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This comes from the blurb on that fuel tank in your second link:

"Tanks meet D.O.T. requirements for combustible liquids. They are not designed for flammable liquids such as gasoline. "

Dan
 
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