Polyelythene (?) Waterline

SOSPD

Hello all
I have been lurking for awhile, posted on a couple excavation threads, and have learned alot. I own a small excavation business (2008 Bobcat 425 and 2004 S160) and have been operating a couple years. I now have a plumbing question of my own I hope you can answer.

I live in a small town and am currently on city water. I want to run a waterline (70 feet), to a frost free yard hydrant, from my basement to equipment shed in back yard. (Easier to clean my excavator on the pad and not drag a hose from garage) As I run the line into the basement it will be 3 feet in ground and I would like to hug the wall in the basement. Is there a fitting that will allow me to turn the 3/4 inch line alongside the wall or will I have to live with it hanging out into space before bending against the wall. I have all 3/4 inch copper in the basement and will need to hug the wall several feet to access the existing waterline.
I spoke with the city building inspector and all he cares about is I install a "backflow valve" on the line. He didn't care where it is as long as it has one. I would prefer it located at the junction from inside copper to outside poly line but could live with it being on the hydrant nozzle. (Do those things wear out?)

Any help on this is greatly appreciated,

Bill

Ron The Plumber

They call it a 90 degree elbow.

SOSPD

I appreciate the response, I thought there should be a 90 but I've been to my local lumber yard, they don't carry it. Lowes only had pipe but no fittings. Menards had pipe and a few fittings but the closest thing was a tee. My last chance is Home Depot maybe they will have it. Doesn't seem like businesses stock this stuff around here.