Can I put CNG into propane tanks?



  1. 0 Votes

    I am not certain, but I think that would be a bad idea.  Propane condenses to a liquid at a relatively low pressure, and the average pressure in a liquid propane tank is around 180psi.  They are probably built to hold higher pressures as a safety measure, but CNG tanks are meant to withstand pressures over 3,600 psi. 

    If you were to regulate the CNG pressure, however, and keep it below 200 psi in the propane tank, it still wouldn’t be worth using since you would only have a small amount of usable CNG at such a low pressure, and would have to refill the tank very often.

  2. 0 Votes

    Also, even at 3600psi, you could not store nearly as much CNG in a given volume as LPG.

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