At what PSI does a plastic soda bottle explode? (home CO2 carbonation)

============================== Careful! If the plastic bottles are right off the compressor the air will be hot and that's a game changer for the plastic bottle specifications. It may work if the bottle storage was well down stream, and away from the heated air, maybe at the point of use. While It may be tempting to reuse bottle caps for a DIY manifold, I wonder if the cap 'seals' are for tamper proofing or do they aid in securing the cap with higher pressures? I don't know but it could be exciting to find out! I think metal, or solid plastic caps are available online that would be more suitable. I use 2L bottles, pressurized to about 50 PSI to dispense lubricant to a CNC router cutter when machining aluminum. So far there's been no problem at that pressure and I reused a cap. The lube is water based and there's been no plastic reactions either. Might be a worthwhile idea idea to put the 'air bottle' in a PVC tube just in case there is a problem. I have my 'dispenser' bottle in a PVC pipe with a glued bottom cap and a slip fit top cap to allow pressure release and changing, yet still provide fluid containment which should help any embarrassing Uh Oh's ! Good luck, and post your success. Remember that there are 'no failures'. They are just a long list of things that don't work!

Elmo,To say at what P.S.I a plastic soda bottle will rupture is not possible due to the numerous manufactures that produce soda bottles at a non-standard thickness or grade of material. WHOLY SH^T Elmo! 150 PSI??!! DUDE BE CAREFUL! you can loose a finger with that much PSI. Check out this expierment. m

At a MS science competition last year involving launching plastic bottles as rockets, the pressure was limited to 65 PSI. How this number was decided on IDK.