Bottle Fill Problems
Originally Posted by mrr23
usually, instead of editing my posts, unless for clerical reasons, i make another post to say something else. but, then i get whacked by being called a post *****.
just trying to help out. it's obvious the last 6-8 lbs can't be air. wouldn't have weight then.
just trying to help out. it's obvious the last 6-8 lbs can't be air. wouldn't have weight then.
Relax man, this combined with your stated hating to be wrong makes for a lot of **** to come your way. Just take Al's feedback and do with it what you like, use and include things like IIRC, or IMHO or something, or continue to have 15posts out of 20repliy subject with you chasing your tail around. I agree its better to edit out the misinfo, or to edit in that its bad poop rather than to leave it and make another post contradicting the last.
Charlie
I agree with Al, it HAS to be a pressure issue if the bottle was weighed after filling and showed to be 15lbs heavier...Unless you somehow jarred the siphon tube loose with a hard hit, its highly unlikely it just came loose on its own...A large restriction in the line could also give you a large enough pressure drop to flash the liquid N2O to gas, check N2O filter? especially if your supplier ran his fill station dry, many times those old N2O supply bottles have rust particles in the bottom.
Thread Starter
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From: Tacoma, WA
Originally Posted by cantdrv65
I agree with Al, it HAS to be a pressure issue if the bottle was weighed after filling and showed to be 15lbs heavier...Unless you somehow jarred the siphon tube loose with a hard hit, its highly unlikely it just came loose on its own...A large restriction in the line could also give you a large enough pressure drop to flash the liquid N2O to gas, check N2O filter? especially if your supplier ran his fill station dry, many times those old N2O supply bottles have rust particles in the bottom.
Robert
Pressure Robert. The purge plume I believe is from the nitrous cold hitting a dry air, adding moisture, if its humid I dont think you get as much purge effect, correct me if I am mrr'd!
BTW, what kine filter you got? And lines?
I am using, and have been NX -4 Triple black insulated, not for this reason, but wanting to be different then my brothers. Use a NX -4 Filter also, nice piece, got it on sale and love it.
BTW, what kine filter you got? And lines?
I am using, and have been NX -4 Triple black insulated, not for this reason, but wanting to be different then my brothers. Use a NX -4 Filter also, nice piece, got it on sale and love it.
Thread Starter
TECH Senior Member
iTrader: (2)
Joined: Aug 2003
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From: Tacoma, WA
Originally Posted by CAT3
Pressure Robert. The purge plume I believe is from the nitrous cold hitting a dry air, adding moisture, if its humid I dont think you get as much purge effect, correct me if I am mrr'd!
BTW, what kine filter you got? And lines?
I am using, and have been NX -4 Triple black insulated, not for this reason, but wanting to be different then my brothers. Use a NX -4 Filter also, nice piece, got it on sale and love it.
BTW, what kine filter you got? And lines?
I am using, and have been NX -4 Triple black insulated, not for this reason, but wanting to be different then my brothers. Use a NX -4 Filter also, nice piece, got it on sale and love it.
It's the other way, on humid days you'll get a bigger plume. I am talking zero plume.
Robert
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I agree with 860....
Have him try a new tank as his tube might be loose inside.
Also try freezing your bottle before you go down. As the nitrous heats up the bottle the less it will take. If the bottle is real hot to the touch more nitrous turns to vapor thus making a full fill impossable.
Dan
Have him try a new tank as his tube might be loose inside.
Also try freezing your bottle before you go down. As the nitrous heats up the bottle the less it will take. If the bottle is real hot to the touch more nitrous turns to vapor thus making a full fill impossable.
Dan
Originally Posted by DynotuneN2O
I agree with 860....
Have him try a new tank as his tube might be loose inside.
Dan
Have him try a new tank as his tube might be loose inside.
Dan
Properties of N2O Chemical Formula N2O
Molecular Weight 44.013
Boiling Point -88.56ºC (-127.4ºF)
Melting Point -93.06ºC (-131.5ºF)
Vapor Pressure 5,238 kPa @ 21.1ºC (759.7 psia @ 70ºF)
Specific Gravity (air = 1) 1.53
Gas Density (21.1ºC (70ºF) @1atm) 1.836 kg/m3 (0.1146 lb/ft3)
Liquid Density (saturation pressure at 0ºC) 0.913 kg/l (57.0 lb/ft3)
Specific Volume (21.1ºC (70ºF) @ 1atm) 0.5447 m3/kg (8.738 ft3/lb)
Critical Temperature 36.4ºC (97.6ºF)
Critical Pressure 7,254 kPa (1,052.2 psia)
Supercritical fluids are produced by heating a gas above its critical temperature or compressing a liquid above its critical pressure. The critical temperature of a substance is the temperature above which a liquid phase cannot exist, regardless of pressure.
Critical temperature and pressure
The errors in ideal gas predictions become most striking as you approach the gases critical conditions.
DEFINITION
At higher temperatures and/or higher pressures the difference between a gas and a liquid eventually disappears(!) and a supercritical fluid is formed. The point at which this happens is called the critical point
DEFINITION
The highest temperature at which a species can coexist as a liquid and a vapor is termed its critical temperature, Tc.
DEFINITION
The highest pressure at which a species can coexist as a liquid and a vapor is termed its critical pressure, Pc.
DEFINITION
A supercritical fluid is a substance which is above its critical temperature, Tc and pressure, Pc.
Molecular Weight 44.013
Boiling Point -88.56ºC (-127.4ºF)
Melting Point -93.06ºC (-131.5ºF)
Vapor Pressure 5,238 kPa @ 21.1ºC (759.7 psia @ 70ºF)
Specific Gravity (air = 1) 1.53
Gas Density (21.1ºC (70ºF) @1atm) 1.836 kg/m3 (0.1146 lb/ft3)
Liquid Density (saturation pressure at 0ºC) 0.913 kg/l (57.0 lb/ft3)
Specific Volume (21.1ºC (70ºF) @ 1atm) 0.5447 m3/kg (8.738 ft3/lb)
Critical Temperature 36.4ºC (97.6ºF)
Critical Pressure 7,254 kPa (1,052.2 psia)
Supercritical fluids are produced by heating a gas above its critical temperature or compressing a liquid above its critical pressure. The critical temperature of a substance is the temperature above which a liquid phase cannot exist, regardless of pressure.
Critical temperature and pressure
The errors in ideal gas predictions become most striking as you approach the gases critical conditions.
DEFINITION
At higher temperatures and/or higher pressures the difference between a gas and a liquid eventually disappears(!) and a supercritical fluid is formed. The point at which this happens is called the critical point
DEFINITION
The highest temperature at which a species can coexist as a liquid and a vapor is termed its critical temperature, Tc.
DEFINITION
The highest pressure at which a species can coexist as a liquid and a vapor is termed its critical pressure, Pc.
DEFINITION
A supercritical fluid is a substance which is above its critical temperature, Tc and pressure, Pc.
Last edited by cantdrv65; Aug 23, 2005 at 09:50 AM.
The above facts make me want to keep my bottle BELOW 1052.2 psia - 14.7 = 1037.5 psig and below 97 degrees F....Maybe thats why nitrogen push works so well. 
Robert if your bottle is getting hot enough to heat the N2O inside above its critical point of 97.6.... you are going to see mostly gaseous N2O, no matter the fill.
Robert if your bottle is getting hot enough to heat the N2O inside above its critical point of 97.6.... you are going to see mostly gaseous N2O, no matter the fill.
Last edited by cantdrv65; Aug 23, 2005 at 10:11 AM.
