Turn off the gas at the gas meter. Brush threading compound onto the thread on one end of the first section of pipe (use a small brush). Screw the thread by hand into the inlet on the gas meter, or a Tee/90-degree elbow coupling on an existing gas line. Place a pipe wrench around the pipe and turn it clockwise to tighten the pipe in place.
Apply compound to the thread on the other end of the pipe. Screw on a steel coupling by hand. Tighten it in place with the wrench. Apply compound to one thread on the second section of pipe and screw it by hand into the other end of the coupling. Tighten it in place with the wrench. Now install all necessary pipe sections and couplings in place until the gas stove is reached.
Brush compound around the thread on the last section of gas pipe and screw on a gas shut-off valve. Tighten it in place with a crescent wrench. Turn on the gas at the meter, and turn on the new gas shut-off valve for a few seconds to rid the new pipeline of air. Turn off the new gas valve.
Mix some soapy water, put it in a water spray bottle and apply it to all new couplings in the new gas pipeline. If bubbles are seen, gas is escaping from the joints and the gas pipe needs to be tightened to the joints until the bubbles stop.
Wrap some yellow sealing tape twice clockwise around the small thread on the top/side of the gas shut-off valve. Also wrap the tape around the male inlet on the stove in the same way. Screw the nuts on each end of a flexible gas hose to the valve thread and also the stove's inlet. Tighten each nut in place with the crescent wrench. Turn on the gas at the meter and open the new gas shut-off valve.