sump drain cleaning

"Jay Masino" wrote in message
...
Aaron Coolidge wrote:
: ... but DON'T use teflon
: tape.
: Why not?
Tim, it's because the Teflon tape can shear off small flakes of the
Teflon,
and get clogged up in the carb, fuel injection, selector valves, etc.

Theoretically, you're supposed to skip the first thread or two when you
wrap threads with Teflon tape. If you do this, the tape won't ever come
into contact with the fluid (gas, in this case).

-- Jay
__!__

Why take the chance on installing something that could cause a problem if
you don't install it correctly? You probably could land your airplane with
one eye closed, but not many people are interested in increasing their risk
level...

Also, even if you install it correctly the first time, one day that drain
will clog again, you'll pull it out and replace it with a new one. Can you
be absolutely sure you're not going to leave any of the used tape stuck
inside the female fitting where the drain attaches? If you do leave a scrap
of tape in there, the new fitting will push those tape shards back into the
fuel tank, which is exactly where you don't want it.

KB

In article , Aaron Coolidge
writes:

... but DON'T use teflon
: tape.
: Why not?
: Tim

Tim, it's because the Teflon tape can shear off small flakes of the Teflon,
and get clogged up in the carb, fuel injection, selector valves, etc.


Isn't there a filter that should catch any flakes or peices before the carb,
etc.?

Chuck

"PaulaJay1" wrote in message
...
In article , Aaron Coolidge
writes:

... but DON'T use teflon
: tape.
: Why not?
: Tim

Tim, it's because the Teflon tape can shear off small flakes of the
Teflon,
and get clogged up in the carb, fuel injection, selector valves, etc.


Isn't there a filter that should catch any flakes or peices before the
carb,
etc.?

Chuck

Depends on the installation. However, let's say you do have the appropriate
filter in the correct location... What if the teflon tape clogs the filter
and the clogged filter causes fuel starvation? Don't take that chance.
Especially, don't take that chance when you're dealing with the lives of
your passengers.

Teflon tape is a definite no-no. Don't use it. This is a lesson someone
learned the hard way.

KB

"Kyle Boatright" writes:



Teflon tape is a definite no-no. Don't use it. This is a lesson someone
learned the hard way.


When I worked in the petro business, we used something called
"RectorSeal" on all the instrument line fittings. It's a paste you
applied to the theads. It seemed to stand up to gasolines/LPG/FO
etc. Not sure if that's the right solution for this or not, but it
worked like gangbusters.

--
A host is a host from coast to
& no one will talk to a host that's close........[v].(301) 56-LINUX
Unless the host (that isn't close).........................pob 1433
is busy, hung or dead....................................20915-1433

Just a few items to add to the mix:

There are different threads used on sump ports on various
airplanes. Make sure you order the right one. You will find 1/8" and
1/4" NPT as well as 7/16NF, and there could be others. The NPTs uses a
sealant like fuellube, and the machine thread styles use an O-ring.

You CAN buy the tiny replacement O-rings for the valve end. We do.

The dark flecks are often bits of bugs. If you leave the cap off
the tank, or the vent is big enough for some insects to enter, they
will. They like gasoline fumes. I have taken numerous bugs out of
tanks and drain valves. Kepp those caps on whenever not dipping or
refuelling.

Fuel is filtered, usually, three times between the tank and carb. A
finger screen in the tank (coarse), a finer one in the gascolator, and
another at the carb inlet fitting. Teflon tape shouldn't be a problem,
but I still don't like it. FuelLube is better.

Dan

In article , "Mike Noel"
wrote:

What is this FuelLube?

from what this owner can figure, FuelLube is used to lube the
threads of fittings that go into gas lines and such.

--
Bob Noel