Forum Discussion
myredracer
Jun 03, 2014Explorer II
PEX tubing is available in different pressure ratings and RVs typically use the one rated for max. 100 psi. You will find the rating on the wall of the tubing. I just did some plumbing mods and all the tubing was marked 100 psi. I have seen the same on two previous TTs as well. I bought some red and blue PEX from a local RV dealer and it was rated 160 psi.
Fittings (tees, elbows, couplings, etc.) are usually plastic and I have not yet seen a rating for them. Things like check valves, toilet valves and faucets probably aren't good for higher than 100 psi, but that's just a guess on my part. I don't think I'd ever want to exceed 100 psi. We have a Watts 263A inside our TT set at 50 psi. We also use a high pressure Valterra hose rated for 200 psi.
Fittings (tees, elbows, couplings, etc.) are usually plastic and I have not yet seen a rating for them. Things like check valves, toilet valves and faucets probably aren't good for higher than 100 psi, but that's just a guess on my part. I don't think I'd ever want to exceed 100 psi. We have a Watts 263A inside our TT set at 50 psi. We also use a high pressure Valterra hose rated for 200 psi.
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