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I Forge Iron

Acme or POL on regulator


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I have and use both.  Make sure your valve(s) are the appropriate type.  The newer valves have both.  I prefer the acme fitting as it does not require tools to change out cylinders.  One possible downside is that the acme connection is not as solid in terms of the regulator rotating vs a fitting which is wrenched on but I have never experienced any problems.  I do not have a large manifold hanging off of the cylinder though.  I have the connection fitting, the regulator, a 1/4 turn ball valve, and the hose.

Speaking of wrenched on fittings, if you go with the pol fitting, do not over tighten it.  A lot of people spot tight these and they do not need to be muscled tight.  Doing so is not great on the sealing surfaces or the threads.  

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