Before revision: Plumbing Radiant heating system manifold using PEX tubing All pipes, including this copper exterior valve as well as PEX, can burst from freezing , although several reports suggest that PEX takes longer to burst under freezing conditions.
After revision: Plumbing Radiant heating system manifold using PEX tubing This copper exterior valve has burst from freezing ; several reports suggest that PEX takes longer to burst under freezing conditions.