Would a 1 gallon plastic container be able to withstand around 5 psi of constant pressure.

[ICRS]

The pressure will be for 5 minutes every 5 hours. For 5 minutes the bottle will be filled with 5 psi of air, so it needs to be able to withstand that much pressure without bursting. Would a 1 gallon milk bottle do, or a 1 gallon orange juice bottle. This will be done each day for indefinitely.

 

[Colt45]

Better to use something designed for pressure... 2x 2L pop bottles?

 

[jaqie]

Use soda bottles, IIRC they can handle around 90PSI on average.

 

[Indolent]

I'm sure it would work for a while. Probably not indefinitely though.

And since you know this is going to be asked, I'm not sure why you didn't put it in the op. What is this for?

 

[Throckmorton]

Originally posted by: jaqie
Use soda bottles, IIRC they can handle around 90PSI on average.

That's a good idea. Soda bottles are freaking hard when unopened and they keep that pressure for years

 

[DrPizza]

Originally posted by: jaqie
Use soda bottles, IIRC they can handle around 90PSI on average.

They handle well more than that; 150 to 200 PSI before they burst. A common fun project with high school students is to turn 2-liter bottles into rockets. Most places limit the students to 90 PSI (meaning, it's a safe pressure); I'm quite happy with a 100psi limit.

Of course, the soda bottle only has 1/2 the volume, so if the volume was important, you'd need to use two of them. If you do an online search for 2-liter bottle rockets, you'll find plenty of resources to show you how to get a tight seal that'll hold 100psi or more. (Specifically, look at launcher designs.) All it'll take is a bit of CPVC tubing, and a way to clamp the bottle in place.

 

[lokiju]

I found out first hand yesterday that a 1 gallon jug of tea isn't able to withstand a drop from my coffee table

 

[Parasitic]

Originally posted by: DrPizza

Originally posted by: jaqie
Use soda bottles, IIRC they can handle around 90PSI on average.

They handle well more than that; 150 to 200 PSI before they burst. A common fun project with high school students is to turn 2-liter bottles into rockets. Most places limit the students to 90 PSI (meaning, it's a safe pressure); I'm quite happy with a 100psi limit.

Of course, the soda bottle only has 1/2 the volume, so if the volume was important, you'd need to use two of them. If you do an online search for 2-liter bottle rockets, you'll find plenty of resources to show you how to get a tight seal that'll hold 100psi or more. (Specifically, look at launcher designs.) All it'll take is a bit of CPVC tubing, and a way to clamp the bottle in place.

Volume shouldn't be much of a problem...1 gallon of air at 5psi? Try 1 liter of air at 20psi?

 

[DrPizza]

Originally posted by: Parasitic

Originally posted by: DrPizza

Originally posted by: jaqie
Use soda bottles, IIRC they can handle around 90PSI on average.

They handle well more than that; 150 to 200 PSI before they burst. A common fun project with high school students is to turn 2-liter bottles into rockets. Most places limit the students to 90 PSI (meaning, it's a safe pressure); I'm quite happy with a 100psi limit.

Of course, the soda bottle only has 1/2 the volume, so if the volume was important, you'd need to use two of them. If you do an online search for 2-liter bottle rockets, you'll find plenty of resources to show you how to get a tight seal that'll hold 100psi or more. (Specifically, look at launcher designs.) All it'll take is a bit of CPVC tubing, and a way to clamp the bottle in place.

Volume shouldn't be much of a problem...1 gallon of air at 5psi? Try 1 liter of air at 20psi?

But, I don't know what his application is. i.e. when I exhale, I can store it in a balloon. However, I certainly can't compress that air to 1/4 of its volume at 4 times the pressure.

 

[Black88GTA]

An antifreeze bottle or a bottle used to hold windshield washer fluid would probably do very nicely. They are very tough and have the capacity you are looking for.

 

[Chronoshock]

If you want more volume than a standard soda bottle, look around for 3-liter soda bottles. The store brand at the local supermarket has them (Shaw's) and they're made out of PETE, same material as the smaller soda bottles. Really any PETE container would work fine. Poland spring jugs also work, but they take lower pressure, something like 50-60 PSI.

 

[Throckmorton]

Originally posted by: Black88GTA
An antifreeze bottle or a bottle used to hold windshield washer fluid would probably do very nicely. They are very tough and have the capacity you are looking for.

Why would those be made to hold high pressure?

 

[arcas]

What are you trying to accomplish?

Since you're going to be using this thing indefinitely, you might consider constructing something more permanent than hacking 2-liter bottles. You could make a small 1gal air tank from a length of 4" or 6" PVC pipe. 18" of 4" sch-40 PVC has an internal volume of 1gal and has an operational pressure of 133psi and burst pressure of 710psi. This would allow you to attach appropriate air hose fittings, relief valves, etc.

 

[spidey07]

5 psi is less than atmospheric pressure - you'd have less pressure inside than out. Just about anything could handle this.

 

[Indolent]

Originally posted by: spidey07
5 psi is less than atmospheric pressure - you'd have less pressure inside than out. Just about anything could handle this.

I'd assume he means 5psi gauge pressure.

 

[Analog]

Originally posted by: DrPizza

Originally posted by: jaqie
Use soda bottles, IIRC they can handle around 90PSI on average.

They handle well more than that; 150 to 200 PSI before they burst. A common fun project with high school students is to turn 2-liter bottles into rockets. Most places limit the students to 90 PSI (meaning, it's a safe pressure); I'm quite happy with a 100psi limit.

Of course, the soda bottle only has 1/2 the volume, so if the volume was important, you'd need to use two of them. If you do an online search for 2-liter bottle rockets, you'll find plenty of resources to show you how to get a tight seal that'll hold 100psi or more. (Specifically, look at launcher designs.) All it'll take is a bit of CPVC tubing, and a way to clamp the bottle in place.

yep, my cub scout group just did this. We did about 90psi

 

[Black88GTA]

Originally posted by: Throckmorton

Originally posted by: Black88GTA
An antifreeze bottle or a bottle used to hold windshield washer fluid would probably do very nicely. They are very tough and have the capacity you are looking for.

Why would those be made to hold high pressure?

You are right, they are not specifically designed to hold pressure...however, 5 psi is not "high pressure". I would imagine even 10x that would not be a problem for these containers. Soda bottles don't have the required 1 gal capacity, unless something was rigged up that would use two or more...and, the more fittings / couplings are introduced into the system, the more potential there is for leaks. To keep it as simple and with as few fittings as possible, a single container would be the best way to go, which is why I suggested the things I did.