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Re: [APD] CO2 regulator to CO2 tank connection washer

You mean, for example, the ports on the regulator where a
pressure meter connects, etc? Yep, those are tapered and
the threads are what provide the seal. A little thread dope
is recommended. You can use tape if (and by "if" what I
really mean is "IF") you are fastidious about keeping it
away from the initial threads upon first assembly and
cleaning out the threads thoroughly after dissasembly and
before reassembly.

I suspect that it would be very costly to machine those
ports into the regulator carcass if they had to seal with
compression or face-to-face fittings.

My comment about parallel threads was regarding the CGA 320
connection, the one where the regulator meets the tank
valve, asssuming one is following CGA prescriptions.

--- Erik Olson <erik at thekrib_com> wrote:

> Aren't the port connections tapered, though?  Some of the
> regulators I 
> purchased were using teflon goop (not tape -- they were
> very explicit 
> about the evils of that).

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