Gas line for dryer

[os1kne]

I am about to purchase a new dryer and I'm going with natural gas. I need to run a new gas line in my laundry room to accomodate this (I have a gas furnace and gas water heater nearby, so this won't be too big of a deal).

I was planning to use 1/2" black pipe, is there any reason not to?

The best place for me to "drop" the gas line for the dryer connection is close to the dryer vent pipe, is there any problem with this? Should there be a certain amount of space between them?

Thanks.

[wft3]

Plumbing codes

Your local public library should carry a copy of the local/national plumbing codes. You should review them.

You may need to pull a permit and have an inspection with a pressure test.

[mschrank]

1/2" is probably fine, but you should check the installation instructions with the dryer to be sure...somewhere in the specs it'll state the minimum size.

As far as distance between the vent pipe and the gas line, my gut feeling is that you're fine as long as they aren't touching...but I would check code as suggested above. There may also be some specs on that in the install sheet as well, probably in the "venting" section.

[LinuxRandal]

I don't know codes, but won't the dryer vent have some residule static electricity? If so, I would want the gas pipe out of spark range, in case I had a leak (oxygen, gas, electricity), when I first fired it up.

[BobSch]

I don't know codes, but won't the dryer vent have some residule static electricity? If so, I would want the gas pipe out of spark range, in case I had a leak (oxygen, gas, electricity), when I first fired it up.

With the amount of water vapor going up the vent, I don't think static would be a problem. Our gas line runs down the wall right next to the vent pipe with no problem.

As far as a gas leak, around here code requires the line be pressurized with air to 20 lb/sq.in. for 12 hours with no loss of pressure before the final gas connection is made.

[eccentrictinkerer]

My dad was a master plumber and he always checked new gas connections with a lit match!

I still do it that way, but got fooled when I installed LOML's new gas range. No flame - must be good.

Next day LOML said she smelled gas,so I re-checked it, still no flame. I then got the grandkids' bubble solution and brushed some on each joint. Still didn't see anything.

I got busy doing something else and finally started buttoning up the range about a half hour later. I noticed a huge cluster of bubbles around a new gas joint.

Lesson learned - always check with the bubble solution.

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Also, do NOT use white teflon tape for gas pipe!!!!

A client of mine, who lives in a luxury condo, had to have his entire gas system replaced. Two fire places, kitchen stove. The entire building's gas piping had been assembled with white teflon tape.

The white tape is NOT rated for gas.

I prefer the old smear-on pipe dope. Messy, but it works.