A piston is more than adequate for inflation gas. If it’s -40 outside the water, don’t blast it. Highland, Dive Rite, DGX (large), Apeks, etc are all adequate.Hi tbone,
Thanks for the insight. I am also looking at regulators for argon. I don't mind the expense. Could you point me to an "argon regulator" with a sealed diaphragm design? The ones I have seen are all piston, for example
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Complete Argon Regulator
Experience optimal drysuit inflation with the XS Scuba Complete Argon Regulator. Features Miflex QD hose and DIN connection. Dive safely!extreme-exposure.com
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Drysuit Inflation Regulator - Dive Rite | Equipment for Serious Divers
The Dive Rite Drysuit Inflation Regulator fits perfectly on an argon/drysuit inflation bottle. Weighing in at just over 13 ounces and measuring just 3.5 by 1.25 inches, this regulator will not add unnecessary bulk to a drysuit inflation configuration. The first stage is equipped with an OPV to...www.diverite.com