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Using Sanke Kegs For Homebrew?

TroubleShooting

Robert Pritchard — Bridgewater, New Jersey asks,
Q

I am trying to determine if I should be using a Sanke keg instead of a regular pin-lock keg for a beer gas mixture (75% nitrogen / 25% carbon dioxide) that I am pushing at about 50 PSI. Although I have not checked every weak point in my system, I have replaced all the O-rings, bought a new lid, and have a new gas line. But I do have a gas leak somewhere. Are Sanke kegs inherently more reliable when it comes to leaking gas?

A
One feature of reliable designs is the minimization of the number of parts that may fail and result in a problem with the device in question. The Sanke keg valve (from “sanitary
Response by Ashton Lewis.