Had parts of gas line for meter replaced. What is the official time for how long the pressure test should hold? Google is giving me ranges from 10 minutes to 30 minutes? Having a nightmare dealing with plumber who replaced the line.

It has been many years but either the City of Houston or the Gas Company (Entex maybe) made me hold it for 30 minutes. You may want to reach out to the gas supplier for their requirements.

Chat GPT:

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However, a common guideline in many regions is to conduct a pressure test and maintain the pressure for a certain duration, often around 15 to 30 minutes. During this time, the pressure within the repaired section of the gas line is monitored to ensure that it remains stable and doesn't drop. If the pressure drops significantly during the test, it might indicate that there is still a leak that needs to be addressed.

It's crucial to follow the guidelines set by your local gas utility or regulatory authorities, as they would have the most accurate and up-to-date information on pressure testing requirements and safety protocols. Additionally, if you're working with a professional plumber or gas technician, they should be aware of the appropriate procedures for pressure testing and leak repairs.

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Commercial new construction we do 2 tests. Initial for 8 hours at 50 psig, final witnessed between 10 and 20 psig for 4 hours.

6 PSI with a residential diaphragm gauge for a minimum two hours.

I have a gauge if you need to borrow one.

Ryan the Temp said:

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6 PSI with a residential diaphragm gauge for a minimum two hours.

I have a gauge if you need to borrow one.

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I'll take you up on that offer. Are you still at yourfirstname@firstlastname dot com ?

Make sure you put plenty of pipe dope and teflon tape on the gauge. Hit it with soapy water during the test as well.

Its not uncommon for DIYers to do a good install with more pipe dope and teflon tape than a professional would use on two jobs, and then pull their hair out when their $10 amazon gauge loses pressure.

Dope it up, tap the glass, hit it with the soapy water.

Also, don't test across times of huge temperature swings. If you pressure it up at 5pm and check it at 8AM the next day, you're gonna see a pressure drop.

jaggiemaggie said:

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Ryan the Temp said:

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6 PSI with a residential diaphragm gauge for a minimum two hours.

I have a gauge if you need to borrow one.

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I'll take you up on that offer. Are you still at yourfirstname@firstlastname dot com ?

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Sorry for the delay. I've been crazy busy lately.

Oops. Forgot my own email address. RTT dot texags at gmail

All good. A buddy ended up having one.

Just for future reference to everyone. City of Houston requires 10 minutes pressure test for homes holding at 10-12 psi.

jaggiemaggie said:

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All good. A buddy ended up having one.

Just for future reference to everyone. City of Houston requires 10 minutes pressure test for homes holding at 10-12 psi.

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That's different than it used to be. Interesting.

jaggiemaggie said:

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All good. A buddy ended up having one.

Just for future reference to everyone. City of Houston requires 10 minutes pressure test for homes holding at 10-12 psi.

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This is what a houston area plumber shared with me when I put my standalone generator and ran a gas line. He still recommended letting it run for as long as you can bear under near constant temperatures. Reason being that you weren't ever going to be coming back to this trench after the dirt goes in, if the bottom connection of the risers had a leak it would be complete PITA to dig back up.