i think the only way is to visual inspect it.
True but that is if you already know where the line runs and have a good idea where the leak is underground. However if you dont have this knowledge you will need to plot where your line runs and walk the area with a pole and look for a place that is excessively damp and probe the area with the pole not too hard or you may rupture the line worse. When you have found said leak (general area) get a shovel and start digging till you uncover the area to be fixed. Then depending on your leak shut off the main cut the pipe where leak is then solder a copper sweat sleeve 1" longer than your removed area to the pipe.
Unless you developed heroes or xmen powers,you have to dig.
I am a Plumbing/HVAC Contractor and the type of fitting I always used for underground copper service pipe has been 3/4" (standard size for residential) brass flared fittings. A flared connection is a tight, secure connection guaranteed not to leak.
To effectively repair a copper pipe leak, you can follow these steps: Turn off the water supply to the pipe. Clean the area around the leak with sandpaper. Apply a pipe repair epoxy or a copper repair sleeve over the leak. Secure the repair in place according to the product instructions. Turn the water supply back on and check for leaks.
To repair a copper pipe leak, you can use a pipe repair clamp or a pipe sleeve. First, turn off the water supply to the pipe. Clean the area around the leak and dry it thoroughly. Place the clamp or sleeve over the leak and tighten it securely. Turn the water supply back on and check for any remaining leaks.
Underground I use K copper exclusively..
Yes, eventually a pin hole in pipe will cause a leak.
Coated Copper Pipe that is approved for underground only.
It depends on the condition of the pipe. Corrosion could cause a leak.
Type L or Type K copper pipe is typically used for underground applications. These types of copper pipe have thicker walls than Type M copper pipe, making them more suitable for underground installation where they may be exposed to greater pressure or potential damage. Additionally, this thicker wall helps to prevent corrosion and allows for increased durability underground.
To effectively patch a copper pipe and fix a leak, you can use a pipe repair clamp or a pipe repair sleeve. First, turn off the water supply to the pipe. Clean the area around the leak and dry it thoroughly. Place the clamp or sleeve over the leak and tighten it securely using a screwdriver or wrench. Turn the water supply back on and check for any remaining leaks.
Pipe sealant that is often used as a boiler repair by Hercules chemical corp
Check out: www.innovativepipeliners.com