Need plumbing advice on a gas line.

[Daniel Lee]

Hello. I am building a new house and the plumbers installed the gasline and the gauge drops down about 3/4 PSI a day. The company says that it only needs to hold 15 PSI for 15 minutes to pass inspection. (It does).

That doesn’t sit well with me that it drops slowly. But then I am a perfectionist and would like someone else’s opinion.

I understand the PSI fluctuates with outside temperature and I have only been able to stop by in the evenings. 

About what PSI is normal for it to remain throughout phase of construction? 

Is this acceptable? I don’t just mean to pass inspection. I want a solid gas line. Should I call out  another plumbing company?

Thanks.

[Mike Wood]

@Daniel Lee This is likely acceptable based on the building code.  I have had a similar situation as you describe. You can ask them to fix it, but its likely going to be hard to convince them to do anything, since it passes code.

Since most gas service is at an even lower pressure, ~5psi, any real lose will be negligible.  

Is the house in rough-in stage, or finished stage?  If its rough in stage, you could have them pressure it up and spray each threaded joint with soapy water to see if you can find the leak. But loosing only 0.75psi drop over several hours will be hard to find.  If you find it, hopefully its on a joint that can be tightened.  But your most likely at finished stage, which will make finding the leak very difficult.