Mainline question

[Greenfin]

What is the difference between Black poly waterline form Menards(box store) and Black mainline from a Maple equipment supplier?

[Brian]

check the P.S.I and see if they are close. Good luck!!

[whatever]

there are a bunch of different wall thicknesses of black poly waterline. speaking from experience, go with the thinest wall u can, the thicker wall is for higher presures and is a huge pain in the A to work with to straighten out and keep straight. it will expand and contract on your wire making it look like a snake when it gets in the sun.
for what its worth, we started with black poly (heavy duty stuff used for underground utilities) when we first started out and have since switched everything to the blue maple mainline.