1. Disconnect all gas appliances and the meter if it is still in place by disconnecting the flex line from the hard pipe. (Do not merely turn off the valve. The test will not hold and may ruin the valve.)
2. Put hard caps at all the ends of the hard pipe except one. (Use pipe joint compound.)
3. At the open end of the pipe, install the pressure gauge. If there is only a female fitting, you wall need to use a nipple. Use pipe joint compound. Make sure the gauge ends up on top, readily visible.
4. Attach a bicycle pump (or compressor) and pump gauge to a minimum of 10 lbs. of pressure. It must hold for a minimum of 15 minutes, without any perceptible drop in pressure.
5. If it does not hold, test all joints by brushing soapy water on them. Start with end caps and joints at pressure gauge.
6. When gauge holds for 15 minutes, call for inspection. (You must have a permit prior to the inspector coming to your location to inspect.)
7. The inspector will verify that the pressure is holding, tag the gas line, and Pacific Gas and Electric will be notified the next working day. The customer will also need to call PG&E at 1-800-743-5000 to request meter set/re-connection.