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Pressure testing new gas line

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Pressure testing new gas line theedudenator 11-19-2009
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Posted by theedudenator on November 19, 2009, 7:37 pm
I ran a new gas line for a garage furnace.
It is about 50 foot of 3/4 line
I pressure tested with air at 30psi to find major leaks.
I soaped all joints and did not see anything.
It dropped to 28.5psi in 24hours.
From what I have read the normal test is 10psi for 10-30min with no
drop.
I am now going to let it sit at 10psi and see when/if it drops.
Any other suggestions?
Posted by hallerb@aol.com on November 19, 2009, 8:12 pm
show/hide quoted text
you should just plug it at both ends, dont depend on the furnaces shut
off valve to hold pressure
Posted by theedudenator on November 19, 2009, 8:20 pm
it is plugged at one end, and I have a gas checking valve on the other
end, it has a shrader valve to add air to the system.
There are no other valves or anything inline.
Just pipe and connections.
show/hide quoted text
Posted by hr(bob) hofmann@att.net on November 19, 2009, 11:23 pm
> it is plugged at one end, and I have a gas checking valve on the other
> end, it has a shrader valve to add air to the system.
> There are no other valves or anything inline.
> Just pipe and connections.
> > you should just plug it at both ends, dont depend on the furnaces shut
> > off valve to hold pressure- Hide quoted text -
> - Show quoted text -
What is your normal gas pressure?
Posted by theedudenator on November 19, 2009, 11:47 pm
wrote:
show/hide quoted text
I have no idea
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