On 4/19/2012 1:34 PM, Attila.Iskander wrote:

"EXT" wrote in message
news.com...

"Larry W" wrote in message
...
In article , dpb wrote:
On 4/16/2012 12:02 AM, wrote:
...

Functionally the same as using a 1 inch "T" as an elbow, with a
reducing bushing in the top to take the 1/2" pipe. Reducing bushing
is not allowed here....

A source for the particular reducing tee has been identified elsewhere;
I'm intrigued by the "Reducing bushing is not allowed here" part. Not
allowed by what or by whom? I never heard of such restrictions on how a
specific objective is achieved in installation as a code prohibition
for
such an ordinary thing as one additional fitting.

What if you can't find the tee easily, would a nipple and a reducing
coupling not be allowed either?

--

Code for gas piping often prohibits use of bushings and instead mandates
bell-style reducers (either with both ends female threads or
street-style,
where larger end is female thread and smaller is male. The
explanation I've
always heard is that sediment or deposits may accumulate at the "ledge"
formed where the bushing screws in to the fitting. This was taken to an
extreme years ago, where you would actually also see reducing fittings
of various types with the smaller diameter offset from the center. These
were made to be installed with the small diameter at the bottom on
horizontal runs, so that there was no abrupt diameter change or ledge at
the bottom of the fitting where the alleged sediment might get trapped.

I have also noticed that plugs are never used to terminate an unused
line, they always use a short nipple and a cap.



That's so they can charge you extra for the nipple and cap.



also, not true.

--
Steve Barker
remove the "not" from my address to email