Galvanized Since Waste Pipe Replacement/Repair

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Sylvan

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I recently went to a place with 46 leaks in their gas lines. The threads were fine, fittings fine. We checked and checked. I reassembled most of the piping with tape and dope and not a leak.

What happens over time as the piping moves is the threads will leak if they aren't made up as far as they should be. The tape is a secondary seal and the dope helps the tape slide into the joint.
Use blue block as Permatex does crack overtime Hercules Here I removed a gas meter and the building owner said "Why it doesn't leak"
 

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Sylvan

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A 32 inch pipe wrench would help, but two of them would help a lot more. Right? I expect when you were tightening the pipes for real, it was pretty much always two wrenches.

People using short wrenches are going to have a hard time getting good torque.
I never saw a 32" wrench BUT I have chain tongs that are about 32" my pipe wrenches are 18" 24" 38" and 48" and 60" . There was someone holding back with a 4 ft wrench
 

Jeff H Young

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fixed many many leaks but never were they attributed to lack of both tape and dope. im a strong beliver in using both but goods threads fittings and pipe screwed together tight enough dont leak especially not dozens of leaks in a system in my experiance. because something isnt just right using both minimizes leaks.
 
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