PEX minimum radius of curvature
The minimum bending radius or PEX is 8 times the outside diameter of PEX, (8 x OD). For 1/2&quot; PEX with OD of 5/8&quot;, minimum bending radius is 8 x 5/8&quot; = 5&quot;.
OD's for 5/8&quot; PEX is.75&quot;, 3/4&quot; PEX is .875&quot; and 1&quot;
pex is 1.125&quot;
So minimum bending radius for 5/8&quot; PEX is 6&quot;, for 3/4&quot; PEX is 7&quot;, and for 1&quot; PEX is 9&quot;
These are the minimum bending radii so anything over that is reasonable.