Running black iron piping for the gas utilities in your home is allowed in some localities. Once you have checked the ordinance the installers will attach pipe to the gas main and run it to the side of the building. They will attach a meter that tracks your gas usage. This meter will have a shut off that will be locked in the off position until your interior pipes are run and inspected. Run your interior gas lines and leave the final piece of pipe in the house within 6 inches of the locked outflow valve on your meter.
Materials You’ll Need
Black iron nipple (6 inches by 3/4 inches, threaded on both ends)
90 degree black iron coupling (3/4 inch)
Black iron pipe (24 inches by 3/4 inch, threaded on both ends)
Pipe wrench with an 18 inch handle
Hammer drill with 3/4 inch masonry bit
Locate the final pipe on your interior gas pipes. Be sure that there is a 90 degree coupling on the end of that pipe. Use your hammer drill to make a hole through the wall at that point. Use a slight down angle from the coupling down through the wall.
Coat the threads on one end of the 24 inch pipe with pipe dope. Slide the pipe through the wall. Use your pipe wrench to turn the coupling inside of the house to meet the pipe. Twist the 24 inch pipe into the coupling inside and snug it with your pipe wrench.
Coat the threads on the outside end of the 24 inch pipe with pipe dope. Twist a 90 degree coupling onto the pipe. Snug the pipe with your wrench leaving it pointing directly at the outflow valve on your gas meter.
Coat one end of the 6 inch pipe with pipe dope. Twist it into the outflow valve on your gas meter as far as it will go with your pipe wrench. Coat the free end of the pipe with dope. Place the opening of the 90 degree coupling on the pipe coming through the wall against the 6 inch pipe. Back the 6 inch pipe out of the meter with your wrench so that the threads go into both the meter and the coupling and lock the system together.
Hold the pipe in the wall in the center of the hole. Fill the excess hole with expansion foam to hold the pipe in place and seal your house from the elements. Contact your local building inspector to obtain an inspection. Contact the gas company to have service turned on so that you can use your gas appliances.
The final pipe in your interior system should end within 4 inches of the height of the outflow of your meter.
Leave a 90 degree coupling on the end of the interior system so that you will have a place to tie your existing pipes into the new meter.
Gas lines carry explosive gas. Never perform this procedure without some knowledge of gas lines and the extreme hazards involved.
Always check with your local building inspector before doing gas line installations to be sure your plan is in compliance with local ordinances.
Work gloves and safety glasses are required when using hand and power tools.
Responsible Energy: Installing New Natural Gas and Electrical Service [http://www.mge.com/images/PDF/Brochures/Business/RightConnections.pdf]