dslreports logo
site
 
    All Forums Hot Topics Gallery
spc

spacer




how-to block ads


Search Topic:
uniqs
25
share rss forum feed

Aranarth

join:2011-11-04
Stanwood, MI
Reviews:
·Frontier Communi..
reply to Ken

Re: Gas lines and DIY

On the plus side, your gas bill will be much lower next time you re-up.

I'm also on an LP tank, but we had pro-installers put everything in.
The only thing I did was the line from the floor tap to the dryer.

You better believe I used plenty of dope. We left it as is with the lp supplied and then went back 2 days later with a black light, and the sniff test.

It seems to have passed.

I had a friend come back with an off-gas detector (he works for the local gas co) and that did not detect anything either.


pike
Premium,MVM
join:2001-02-01
Washington, DC
kudos:3
said by Aranarth:

You better believe I used plenty of dope.

Applying excessive dope is just as much as a rookie mistake as not using enough. It's not likely to be a safety concern in a residential application, but it will invariably lead to damaged or inoperative gas appliances.

robbin
Premium,MVM
join:2000-09-21
Leander, TX
kudos:1
Not only that, but you don't use dope on the flex line from the valve to the appliance.


fifty nine

join:2002-09-25
Sussex, NJ
kudos:2
said by robbin:

Not only that, but you don't use dope on the flex line from the valve to the appliance.

You don't? What do you use then?

kherr
Premium
join:2000-09-04
Collinsville, IL
I'm figure he means the flare fitting on the supply and flare fitting on the appliance, which are a machine fit. If that leaks toss the fitting and get new ones.


pike
Premium,MVM
join:2001-02-01
Washington, DC
kudos:3
reply to fifty nine
said by fifty nine:

You don't? What do you use then?

Nothing on a flare fitting.. !

HarryH3
Premium
join:2005-02-21
kudos:3
Reviews:
·Suddenlink
reply to fifty nine
said by fifty nine:

said by robbin:

Not only that, but you don't use dope on the flex line from the valve to the appliance.

You don't? What do you use then?

The threads on flare fittings and compression fittings are not there to act as a seal against leakage. They simply apply pressure against the connection to force it to seal properly. Using pipe dope on those is a waste of time and pipe dope.

Aranarth

join:2011-11-04
Stanwood, MI
reply to robbin
don't worry I used the right amount - just enough to cover the treads and only on the pipe so the excess is on the outside of the pipe, and I used the stuff that came with the flexline which I assumed was dope...


ttiiggy
Premium
join:2001-03-27
Bozeman, MT
reply to fifty nine
A compression fitting seals on the section outlined in red here. Sealing has nothing to do with the threads on a compression fitting.



Regular pipe threads DO need dope or teflon tape or both.


PSWired

join:2006-03-26
Annapolis, MD

1 recommendation

Technically the sealing mechanism in that fitting you showed is compression, but the trade name for it is a flare fitting. A compression fitting is the type that uses a crushable sleeve around the exterior of a pipe to create a seal:




Not trying to nitpick, just clearing things up.


ttiiggy
Premium
join:2001-03-27
Bozeman, MT
said by PSWired:

Technically the sealing mechanism in that fitting you showed is compression, but the trade name for it is a flare fitting. A compression fitting is the type that uses a crushable sleeve around the exterior of a pipe to create a seal

Yes. True all that.

I was thinking about the technical compressing sealing and not the name of compression fitting.