Acetylene regulator and C02 bottles

[LookingGlass]

A friend of mine recently got 4 free corny kegs. He has acetylene regulators. I have not seen them but the question came up if they can be used as C02 regulators. Anyone ever tried this?

 

[RCCOLA]

Acetylene regulators typically handle lower bottle pressures than CO2. If he decides to do this, he needs to find out if it can handle 1500psi of pressure. Acetylene bottles have less than 400psi in them.

Just looked on Amazon at a couple and they say 0-300psi max. It'd probably kick the pressure relief valve off with CO2 pressures.

 

[E_Marquez]

acetylene regulator will have a CGA 510 fitting for the acetylene tank.

A CO2 bottle will have a CGA 320 outlet.

acetylene is stored in a low pressure tank.
225psig @70 deg F is what the Compressed Gas Association states

CO2 is stored in a higher pressure tank
816psig @68 deg F is what the Compressed Gas Association states.

So NO.. I don't think your acetylene regulator idea will work out well.

 

[LookingGlass]

Thanks for the diagram and advice both of you. Helps out tremendously. We are going to rotate the use of the kegs and this will help with getting the right regulators for the CO2 bottles. Thanks again everyone.