Helium disposable cylinder

[mike 109444]

Does anyone know what is the max rated pressure for the helium disposable ballon type cylinders (for party ballons) They are aprox 1ft tall and about 2ft round. They do have a blowoff plug pressed into side. Although there are lots of marking on side there is nowt about max pressure (cos it's disposable!) No I won't be using it for a compresser tank but would like to know it's rating for another job/project.
Ta Mike

 

[brightspark]

Does anyone know what is the max rated pressure for the helium disposable ballon type cylinders (for party ballons) They are aprox 1ft tall and about 2ft round. They do have a blowoff plug pressed into side. Although there are lots of marking on side there is nowt about max pressure (cos it's disposable!) No I won't be using it for a compresser tank but would like to know it's rating for another job/project.
Ta Mike

what pressure do u require ??

 

[rtbcomp]

Is there one that says TP for "Test Pressure"?

They're considerably thinner than Calor gas cylinders, and those are tested to about 30 bar.

 

[mike 109444]

Have been playing in the past with the water jet washer type sand blaster attachment and as most seam to find it cloggs in pickup pipe (even with kiln dryed sand) I was thinking of using the helium cylinder as a blast type pot with a 20-30 psi air feed, then taking output (air and sand) and attach to jet washer grit blast pickup pipe. This would give a pressure feed of grit rarther than the suction feed. Going for large compressor + blast pot + noise + ect is a no go. Would just be nice to have it as an option tool rather than the usual angle grinder + wire wheel ect.

 

[mike 109444]

As I recall there was no "TP" or any other "max working pressure" type marking. Yes you are right they are very thin (being disposable). It does have the "do not refill" message

 

[brightspark]

Have been playing in the past with the water jet washer type sand blaster attachment and as most seam to find it cloggs in pickup pipe (even with kiln dryed sand) I was thinking of using the helium cylinder as a blast type pot with a 20-30 psi air feed, then taking output (air and sand) and attach to jet washer grit blast pickup pipe. This would give a pressure feed of grit rarther than the suction feed. Going for large compressor + blast pot + noise + ect is a no go. Would just be nice to have it as an option tool rather than the usual angle grinder + wire wheel ect.

a pot full of sand with 30 psi of pressure behind it ist going to work . the sand would need to be metered in to the airflow in to a blast pipe up to the water jet nozzle .