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Author:
bernabeu (SC)
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EVERY, repeat EVERY, NPT fitting 1/8" through 2" has EXACTLY 7 threads
if these threads are within tolerance(s) the PROPER makeup including 'power' is 7 resulting in a leak free LUBRICATED metal to metal seal (the dope is NOT a sealant, merely a lubricant)
if the threads are 'tight' then a good joint can be made with 4-6 turns and 'dope'
if, however, too many turns are used then the fitting is wedged open by the imperfect 'ending threads' resulting in a 'pipe joint' seal and NOT a metal to metal seal
"My sh*t don't stink and my joints don't, never, ever, not once in 40 years, leak."
I have, however, been fired many times for refusing to 'knuckle under' and perform sub-standard work.
But, never, ever, from an industrial or government job.
{think Groton, CT}
..... nuf said ....
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Author:
hj (AZ)
In 65+ years I had 4 jobs and was never fired from any of them.
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Author:
bernabeu (SC)
journeymen travel
a lot
i have seen men quit when they could not get mustard on their hot-dogs
walk across the road
start the new job within 10 minutes
we come from different worlds
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Author:
sum (FL)
But the reason they quit for not getting mustard on the hot dog is because they feel strongly that mustard works better than the yellow dope for gas threaded joints.
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Author:
bernabeu (SC)
yellow is used for TPFE 'tape' to indicate a 'thicker' more uniform composition
imo: permatex (now known as permatex pipe joint compound) works for EVERYTHING, but, is very very VERY messy to work with
a THICK black sticky goo which does NOT totally harden except when used on steam piping, and then only after several years
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Author:
davidimcintosh (Canada)
Useful info. Thanks.
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