Galv. For Gas

[drtyhands]

What's your opinion,

Albertsons grocery,McDonnalds Corp.,and Edwards Theaters did not allow any galvanized iron pipe to be installed for gas in or on their buildings,as damage could occur to their equipment due to the gal. flaking off the inside of the pipe and clogging orrifices mechanisms etc.I did these projects in the mid 90's.

Now I'm helping a fellow contractor screw a custom together and he insists on the whole house being galvanized iron pipe for gas.He uses domestic fittings and the best pipe he can get which I like because the gal. coating will help with casting pinholes.

But whats up with the large corperations not allowing it.Is it just an old school holdover.

Adam

[CWSmith]

I don't believe it's a "holdover", but then again I only remember what my Dad (he was a licensed steamfitter) telling me. As I recall, it isn't just a matter of concern for "flaking". As I understand it, some gas properties can cause a chemical reaction with zinc. I know that here in NY state, galvenized pipe is still prohibited from use on gas lines. I had a furnace replaced last year and some new gas line installed in my home a couple of months ago (both by licensed people), and in both cases it was either black iron or copper.

I'm sure you'll get quite a few comment from the pros, that will give you much more detail.

CWS

[drtyhands]

I don't believe it's a "holdover", but then again I only remember what my Dad (he was a licensed steamfitter) telling me. As I recall, it isn't just a matter of concern for "flaking". As I understand it, some gas properties can cause a chemical reaction with zinc. I know that here in NY state, galvenized pipe is still prohibited from use on gas lines. I had a furnace replaced last year and some new gas line installed in my home a couple of months ago (both by licensed people), and in both cases it was either black iron or copper.

I'm sure you'll get quite a few comment from the pros, that will give you much more detail.

CWS
AAAHHH. here it is again, different parts of the united states using different procedures of proccessing and putting additives in the natural gas.Similar to the discussion we had refferring to the use of using copper for gas.

[PLUMBER RICK]

adam, just had this conversation today.

copper for use in gas is dictated by the sulfur content from the gas supplier.

as far as i know, it's the specs on the job that dictated the type of pipe. just like we don't use drip legs here.

i remember on 1 large job, 544 apts. we couldn't get black pipe. we used gal for all the gas. miles and miles of gal:eek:

the only gal i use now is on gas. i use brass on water. referring to screw pipe only.

rick.

[plumbdog10]

adam, just had this conversation today.

copper for use in gas is dictated by the sulfur content from the gas supplier.

as far as i know, it's the specs on the job that dictated the type of pipe. just like we don't use drip legs here.

i remember on 1 large job, 544 apts. we couldn't get black pipe. we used gal for all the gas. miles and miles of gal:eek:

the only gal i use now is on gas. i use brass on water. referring to screw pipe only.

rick.

I agree with Rick, in southern California. I've had "Gas Company" reps tell me gal. pipe works just as good. But........check with your regional supplier.

[wookie]

Galv. is what I use. Done a few exterior runs ( adding gas meters/tankless water heaters ) looks better with no rust. If the jobsite still has galv. water supply I'll use black iron or csst just so no one gets in trouble down the road. Love csst but i'll only use it where I'm comfortable it won't be puntured in normal day to day conditions. csst and hdpe are great in siesmic locations.

wookie

[drtyhands]

Galv. is what I use. Done a few exterior runs ( adding gas meters/tankless water heaters ) looks better with no rust. If the jobsite still has galv. water supply I'll use black iron or csst just so no one gets in trouble down the road. Love csst but i'll only use it where I'm comfortable it won't be puntured in normal day to day conditions. csst and hdpe are great in siesmic locations.

wookie
Do you use the yellow tape on male threads?
This is not a trick.An honest question.I only use it when I'm getting inspected in L.A.cities jurisdiction.

I have a hard time keeping it tight in the valleys of the threads and it just srcews right up the threads never really gets into the fitting.I can get it,Just a pita when trying to put it on while it's turning in my machine.

[wookie]

I don't use tape only Key Tite 505. Lots easier while turning in the threader.

wookie

[PLUMBER RICK]

teflon is teflon:D

the difference is the mil. thickness and the color.

save your money and go with the white. i typically use slicktite or rectorseal(rectum seal):D for my paste dope.

i too love the csst (gastite) and the hdpe:)

adam, forget the gas, practice on the 9 or 18 hole:confused: you have a month to impress us and woop me:eek:

rick.

[drtyhands]

teflon is teflon:D

the difference is the mil. thickness and the color.

save your money and go with the white. i typically use slicktite or rectorseal(rectum seal):D for my paste dope.

i too love the csst (gastite) and the hdpe:)

adam, forget the gas, practice on the 9 or 18 hole:confused: you have a month to impress us and woop me:eek:

rick.
I'm going out next Tue. evening,man I love the long hours of sunlight.
You HAVE GOT TO BE KIDDING by the time we get out there It will be only my 5-6th time on a course.If your doing this for the competition you've got to know bettering me on the course would be like taking candy from a baby.
:)

[PLUMBER RICK]

I'm going out next Tue. evening,man I love the long hours of sunlight.
You HAVE GOT TO BE KIDDING by the time we get out there It will be only my 5-6th time on a course.If your doing this for the competition you've got to know bettering me on the course would be like taking candy from a baby.
:)

according to mrs. seat down/ joey, taking candy from a baby is no where as bad as robbing the cradle:eek: i'm 12 up on her:D

joey loves teflon, nothing sticks to it;)

rick.

[mtburdick]

For New York state at least i know according to code here in the Albany area we are not allowed to use anything but black pipe on natural gas with non teflon pipe dope. Wish i knew more about the reasons behind this.

[plumbdog10]

On gas: standard teflon (white) and Key-Tite.

As, Dirty said: in LA you use the approved yellow tape. Which, like most of LA City is bullshit.

[JRM638fitter]

Here on Long Island New York Galv only on the outside and to the first fitting or the first 18" inside. No Teflon tape or Blue block. Pro dope is what most use or Megalock.

[apf]

I"ve worked a few states where only tape is allowed on gas pipe threads . They are afraid of sloppyness with the paste obstructing orifices . Especially where no drip legs are required

[gear junkie]

Do you guys have to paint the galv. lines yellow so they don't get confused w/ water lines? We still have lots of houses around here that have gal. for water.

[westcoastplumber]

I didn't bother to read the whole thread, just blow over it, I install nothing but galv in and out of a house, all around. It is clean and is better quality. (Code say's galv can only be installed outside, no steel becuase it rusts)

As far as the yello PTFE tape, I wouldn't use it, I use pipe dope only, and I use the nasty green stuff only on gas. (key-tite) messy, but it will wipe off:D

[westcoastplumber]

AAAHHH. here it is again, different parts of the united states using different procedures of proccessing and putting additives in the natural gas.Similar to the discussion we had refferring to the use of using copper for gas.

Just a note on the gas around america, back east and mid west (and now los angeles) drip legs are required. Now, thats all the same, but back east you are required to grade you gas line I heard because the gas is "wet" please tell me if this is true?:D

[plumberscrack]

Just a note on the gas around america, back east and mid west (and now los angeles) drip legs are required. Now, thats all the same, but back east you are required to grade you gas line I heard because the gas is "wet" please tell me if this is true?:D

You may have been misinformed. No grading neccesary.
Mid-Atlantic area no longer has wet gas and no drip legs are required now(but I still install them)

[gear junkie]

Just a note on the gas around america, back east and mid west (and now los angeles) drip legs are required. Now, thats all the same, but back east you are required to grade you gas line I heard because the gas is "wet" please tell me if this is true?:D

We don't have to grade them but a drip leg is required.

[apf]

Unless we know the specific gas is completely dry we are required to have a pitch/slope of 0.250" for every 15' of pipe .

[westcoastplumber]

Unless we know the specific gas is completely dry we are required to have a pitch/slope of 0.250" for every 15' of pipe .

So I wasn't completely wrong, I just had my part of the country wrong:D

[DuckButter]

You may have been misinformed. No grading neccesary.
Mid-Atlantic area no longer has wet gas and no drip legs are required now(but I still install them)

Actually, don't laugh, 1/4" per 15 ft in MA. (yup...usual response...how the heck you s'posed to get that pitch accurate??)
Mark, feel free to look it up.
I have yet to see it enforced, but it's code.

P.S> - hadn't seen APF's post till I hit enter...guess it's not just us.