Propane Question

[RacingManiac]

Whats the typical pressure of the Coleman or other CT brand propane? In PSI? I am just wondering since looking at Taiwanese site they mention 8kg or 12kg propane, which I am assuming is kg/cm^2. I want to know whats a typical propane here equate to pressure wise....

[m102404]

I thought that was the weight of the propane in the tank, or something to do with the total weight (you know..when they fill it on the scale)....i.e. a BBQ tank is 20KG

Anyways...says on Coleman's site that "More campers use this fuel than any other, probably because of convenience and ease of use. No pouring. No priming. Just attach the fuel cylinder to the appliance and you’re in business. Coleman equipment is pressure-regulated at 15 psi (pounds per square inch) to ensure steady output throughout the life of the cylinder. Propane offers great overall reliability, but be aware that it operates less effectively at subfreezing temperatures than liquid fuels. Cold will cause a pressure drop in the cylinder and output will diminish as a result. Cylinders weigh two or three pounds, so propane isn’t the lightest weight option. Nor is it the least expensive. However, if you tend to set up camp and stay for days or weeks, investing in a refillable bulk tank will significantly reduce the overall cost of fuel. "

...don't know if that means that the tank is at that...
***checked some more...definitely not 15psi, just their equipment is regulated to that***

Carl would know for sure...it might be listed on his gungas site.

***edit****
The pressure inside the tank at -40 degrees F is1.3 PSI and at110 degrees F it is197.3 PSI.

[RacingManiac]

so probably ~120 ish at regular room temp....

I think they are refering to it as pressure though, but the pressure changes as the propane empties, given the constant tank volume that means if they do fill it up to more mass it should have higher pressure....I just would like to have a frame of reference so I can get more of an idea as to what they are talking about comparing the 8kg propane to 12kg propane....if it is kgf/cm^2 though, 120psi would equate to ~8.4kgf/cm^2.

[coach]

Originally Posted by m102404

I thought that was the weight of the propane in the tank, or something to do with the total weight (you know..when they fill it on the scale)....i.e. a BBQ tank is 20KG

that's one big heavy ass BBQ tank. 20KG = 44lbs

standard tanks are 20lbs. I've been looking for the refillable 10lb tanks but have not seen one in stores for several years now.

Originally Posted by RacingManiac

comparing the 8kg propane to 12kg propane....if it is kgf/cm^2 though, 120psi would equate to ~8.4kgf/cm^2.

like tys said, I'm pretty sure that they are speaking of filled weight not volume or pressure.

[m102404]

LOL! stupid imperial measurements....

[coach]

Originally Posted by m102404

LOL! stupid imperial measurements....

gotta love to hate it! I'm just glad my scales at work have both measurements.
oddly though, we deal with one company that takes actual weights in pounds but needs the cubed weights in centimeters. lol

[lemegacool]

Originally Posted by coachster

I've been looking for the refillable 10lb tanks but have not seen one in stores for several years now.

ct has them... at least they had them (stubby little tank) last time i went shopping for some propane to power up my jet engine

[ThunderCactus]

Personally, I've always wanted to see a squad of guys pitch in for a BBQ tank with a propane adapter on it. Mounted on a stand so you don't have to hold it. Just run up and fill your mags lol
Might be good for anyone with a GBB rifle and heavy trigger finger lol

[coach]

Originally Posted by ThunderCactus

Personally, I've always wanted to see a squad of guys pitch in for a BBQ tank with a propane adapter on it. Mounted on a stand so you don't have to hold it. Just run up and fill your mags lol
Might be good for anyone with a GBB rifle and heavy trigger finger lol

easiest way is to hang it upside down, use a tank adapter hose and AI adapter. just a matter of how much the liquid gas vaporizes in the hose.

[Styrak]

Originally Posted by coachster

easiest way is to hang it upside down, use a tank adapter hose and AI adapter. just a matter of how much the liquid gas vaporizes in the hose.

Aren't they desgined to stop flowing if they're upside down, or there is liquid at the main valve?

[coach]

Originally Posted by Styrak

Aren't they desgined to stop flowing if they're upside down, or there is liquid at the main valve?

with the coleman tanks, you turn them upside down to fill your mags, to get the liquid into your mag instead of the surface gas. I am unsure if there is a safety valve on the 20lb tanks that shuts it off when inverted. I have always presumed them to be similar and will only work if you can have the liquid flow from the tank into your mag. otherwise, you'll note a short fill and not shoot an entire mag of BB's.

edit: If I don't got up to wasaga tomorrow, I'll test it out. I have an adapter hose that I fuel my portable grill and propane stoves off of with a 20lb tank.