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Rob, The size is 3/4-14 ngs. To re-tap (enlarge) the threads in the neck of a tank will (I believe) violate the integrity of the neck (makes it thinner) and would cause it to be condemed. I have seen a 3/4" valve re-cut as a 1/2" taper to fit an older steel tank. Why do either when you can buy steel 72's in hydro and in vip for $50 a pop. Dave Dalton ----- Original Message ----- From: Rob Sluys <rsluys@nm*.ed*> To: <techdiver@aquanaut.com> Sent: Saturday, February 12, 2000 2:58 PM Subject: Steel 72 retrofit > List, > > Just wondering if anybody's ever tried retrofitting a steel 72 that has the > 1/2" taper threads to the threads normally used on manifold and other > non-antiquated equipment? Just an idea I had out of no where, any ideas? > > On a related note, what exactly is the normal thread size? I know it's > 3/4", but what's the thread count? > > Safe Diving, > Rob Sluys > > -- > Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. > Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'. > -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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