Nan Rothwell on fri 23 aug 96
I've been renovating my old salt kiln. Now I'm about to put my cast-iron
burners back together with new guages, thermocouples, etc. Here's my
question. I remember that when we last did this process nearly 20 yeras ago,
we used some kind of pipe dope and/or teflon tape in the screw-together
connections. But I can't remember what type we used. Is there a kind
specifically recommended for use with propane? (I fire at around 3.5 pounds
pressure -- but the line pressure can occcasionally go as high as 6-7 pounds
during the firing process.) Brand names or product descriptions would be
helpful. Thanks very much!
Nan Rothwell
Tracy Dotson on fri 23 aug 96
Nan.....There are different regulations in different areas in the US for what
pipe dope you use specifically for propane. Go to your local hardware store
and read the lables to see if you can get a sealer to use for propane. The
best way is to call a local Plumming company or better still ask your propane
dealer. I have found that most regs will not let us use the teflon tape any
more.
Good Luck
Tracy Dotson
thepottery@aol.com
P O Box 14
Penland NC 28765
jonpjon@ibm.net on sat 24 aug 96
Hi Nan,
Last June I visited the U.S. and picked up some pipe dope at a Home
Depot in California to seal the joints of a short section of high
pressure LPG plumbing on my gas kiln.It was just called PIPE DOPE and
came in a small can (in the plumbing section) the instructions said it's
ok for sealing joints on LPG pipes. It cost about 8$. I never got to use
it because on the way home to Manila it was confiscated at the Hong Kong
airport by an overzealous inspector who insisted it was a volatile
material (even though it was clearly marked non-hazardous). I guess he
figured I was a terrorist. So when I got home I didn't have anything to
do my repair work. Pipe dope is not available here and I have never had
good luck working with teflon tape, it seems OK at low presssures but
often leaks at above 10 PSI or so. I ended up using some automotive
gasket sealer that comes in a tube, it's necessary to let it cure for 30
min. or so before pressure testing but it's holding up fine.
Jon Pettyjohn Manila jonpjon@ibm.net
>----------------------------Original Message-------------------------
>I've been renovating my old salt kiln.
>Now I'm about to put my cast-iron burners back together with new
>guages, thermocouples, etc. Here's my question. I remember that when we
>last did this process nearly 20 yeras ago, we used some kind of pipe
>dope and/or teflon tape in the screw-together connections. But I can't
>remember what type we used. Is there a kind specifically recommended
>for use with propane? (I fire at around 3.5 pounds pressure -- but the
>line pressure can occcasionally go as high as 6-7 pounds during the
>firing process.) Brand names or product descriptions would be helpful.
>Thanks very much!
>Nan Rothwell
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