How to Test a Pipe With Air

It's simple to test a pipe with air. The act is called "pressure testing" and it allows pipes that provide you with a reliable gas supply to be tested for potential gas leaks. While testing the pipes for gas leakage is relatively simple, you'll want to find out from your local city hall if there are any guidelines you'll need to adhere to when performing the test. Some local governments require that you inform city officials prior to performing pressure testing.

Steel adapter
Air chuck
Steel caps
Pressure gauge
Pipe wrench
Teflon paste
Air compressor
Crescent wrench

Instructions

- 1
  Go to the gas meter. Turn off the gas supply. Use the pipe wrench to take off the gas meter connector. This connector is located on the steel gas pipe. Attach the new adapter to replace the one you just removed.
- 2
  Cover the adapter threads with the Teflon paste. Use your hand to screw the test gauge on slowly. Use a crescent wrench to tighten the gauge. Detach any appliance that is connected to the gas pipe. Put the steel caps on both ends of the gas pipe. Use the pipe wrench and Teflon paste to secure the pipes to the caps. Attach the air compressor to the air chuck. Switch on the compressor. Allow it to fill completely. It will turn off by itself when the cycle is complete.
- 3
  Move the air chuck forward slowly toward the test gauge. Fill up the pipe using air. You must contact a municipal code enforcement officer through the local city hall to find out the correct pounds per square inch; doing so is often a requirement by law.
- 4
  Use a screwdriver to carefully push on the air valve. This will allow you to relieve pressure on the test gauge. Connect your appliances back to the gas meter. Switch on the gas.

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