NOS bottle - gone wrong, need help!

[PercyBigun]

i had it filled up the other day.

tonight i was gonna remove the bottle to put it in the house overnight to warm, cos i got a fastford mag feature tomorrow on the drag strip

when i slackened off the nut of the little pipe going into the bottle, gas started blasting out.

and yes i had closed the big valve on the bottle.

i tried opening and closing the big valve again a couple of times but it still happened.

has the refilling place fucked up my valve or what?

as far as i know, the NOS is still working for the feature tomorrow though.

[Retromotorsport]

sounds like there is some swarf in there. Asfor heating the bottle its best to get a proper bottle heater jacket as this will keep the NO2 up at above 900psi