: : I need to run a 1 inch cold water line from the crawl space
: : under my house to supply a group of lawn sprinkler valve
: : that are a few feet from the house. There is already a trench
: : under the foundation. I'd like to use copper, but have
: : been told that soldered joints should not be buried,
: : and therefore, coiled copper tubing should be used.
: : Is this correct? Should I use type L or K? I've been
: : advised not to use plastic supply pipe under the house.
: : Can coiled copper tubing be soldered, or are flare or
: : compression fittings required?

: : Thanks, Mike

when i do copper outside i silver solder the joints or you could use flared fittings. silver solder is much cheaper in cost and when done properly. will never leak.