A flare joint is used on gas fittings and uses a nut and flare fitting to make the connection. This is a dry fit with no joint compound. The copper is soft enough that it compresses with the nut and forms the seal.
Gasket
The same that is used above ground. Sweat fitting coupler. I would not use copper underground in an area that has winter.
You cannot sweat copper pipe if it has water in it. You must remove the water first. Even the steam from water will keep you from successfully sweating a joint without leaks. bob...
Joint compound AKA dope is used as a lubricant and to seal minor imperfections of the threads
The best sealers for copper pipe are a combination of plumbers tape and plumbers epoxy. The tape is used to temporarily seal any holes while the epoxy dries.
Yes they have compression joint fittings for copper.
When you use soft copper tubing, you flare the end to make the connection. You put a nut on the tube and then flare the end so that it looks like a funnel. Then you can connect the tube to a fitting and when you tighten the nut it compresses the copper and makes a seal.
you should to repair it by : - soldering .....() - Brazing ........ () - or cut flare joint and start new flare joint .
When soft copper tubing is used the end is flared so that it can seal against the fittings. A flaring tool is used to spread the end of the tubing so that it looks like a small funnel. When you tighten the nut onto a fitting it compresses the copper against the flare on the fitting and makes a seal. It is a dry seal, no pipe dope should be used on a flare fitting. This is almost always on a gas line of some sort, air, natural gas, propane or some other gas. It can be used for liquids, but generally isn't.
you should to repair it by : - soldering .....() - Brazing ........ () - or cut flare joint and start new flare joint .
No, hard copper pipe will split when you try to flare it.
Flare copper pipe and use a flared shutoff valve. If valve isn't flared, use an adapter fitting between copper flared pipe and valve.
sea; what you can see
Gasket
Flared fittings use a flare and a nipple for the sealing surface. The threads do not serve any purpose as to actually sealing anything. The threads merely hold the flare of the one fitting together tightly with the nipple of the other fitting to create a seal.
It is said that copper braceletes help with joint pain.
AN fittings are a flare fitting, using 37° flared tubing to form a metal-metal seal.