how do i straighten pex tubing that comes in a coil?

Answer 1

you cannot get it to stay straight after water gets in it. The only thing you can do is strap it up very well

Answer 2

You did not say why you want it straight or what you are going to do with it. But, you can stretch a piece across the yard and put a weight on each end, leave it in the sun and heat for a few days that will straighten it, best of luck.

Answer 3

A good hair dryer should help. That stuff is really stiff. I'd be a little leary of using one of those heat guns, they get so hot you could easily melt a hole in it.