PT
Active Member
Posts: 460 
Likes: 260
1964 Aloha & 1962 Holiday House
Currently Offline
|
Post by PT on Jan 19, 2019 20:46:13 GMT -8
Has anyone had success unscrewing sections of galvanized gas pipe and then getting them back together without a leak? I have a contorted section of pipe going through the plywood floor I'm replacing and can either cut a channel in the old/new plywood or try to unscrew the piping for a cleaner install. After nearly 60 years I envision the pipe being nearly impossible to unscrew and successfully rescrew but would love to be wrong... Any successful attempts at this?
Thanks
|
|
|
|
Post by vikx on Jan 19, 2019 21:01:24 GMT -8
Gas lines should not be galvanized, but "black iron". Most old hams had copper from the tank and up into the cabin for appliances.
You could add a black iron feeder from front to midsection under the trailer. At the front, there should be a pipe to 3/8" flare brass fitting. A gas hose connects to the tank from there. At the other end, you can tee with black iron or add a brass fitting and go up to the stove and/or heater with copper.
I've never seen pipe actually going up and into the cabin; it's all been copper with flared fittings. My guess is that your pipe will unscrew with the right tools. To re-attach, the threads must be very clean; sometimes not so easy, especially if they are worn.
If your trailer is truly galvanized pipe, I would change it out. PM me for photos if you need them.
|
|
PT
Active Member
Posts: 460
Likes: 260
1964 Aloha & 1962 Holiday House
Currently Offline
|
Post by PT on Jan 21, 2019 20:53:45 GMT -8
Thanks Vikx -
Looks like the Harry and David crew did things a little differently than other manufacturers. I think I'll get a couple pipe wrenches and see if I can get the gas line to unscrew. Would be a much cleaner way to go about things. If I get it apart I'll invest in some pipe dope to get it back together and very carefully test for leaks before using again.
|
|
|
|
Post by vikx on Jan 21, 2019 21:01:12 GMT -8
You might want to talk to the local gas company about propane reacting with the galvanized pipe, too. Never hurts to have more info...
|
|
tharr84
New Member
Posts: 1
Currently Offline
|
Post by tharr84 on Mar 27, 2020 21:21:23 GMT -8
old post.. sorry. but "local propane company" here... ALL the propane plumbing I connect too (in houses and also use on vapor systems) is schedule 40 galvanized. in the over 800+ installations ive done, maybe seen a dozen with black pipe and its usually a house which is being "flipped" so everything is done on the cheap. I also live on the coast so that might play a role in material use.
Our liquid systems require schedule 80 which is usually sourced locally as black pipe
|
|
|
|
Post by vikx on Mar 28, 2020 19:53:03 GMT -8
Trailers are not houses. It's illegal to use galvanized pipe for gas lines in any RV.
In my area, PNW, black iron is required under the house and coated pipe underground. They are also using yellow poly? piping underground these days. Gas company just extended the line up the street. I guess it depends where you live...
|
|
