2005 Fleetwood Pioneer 18T6 - water damaged sub floor

S'more campers wrote:
One of the many little extras the original owner provided was a pressure reducer - some how this thing is supposed to prevent exposing the pex to full city pressure and limit it to 40 Psi (i believe) - as a guy who has a reasonable understanding of hydraulic theory i find it hard to believe - flow limiter yes, pressure regulator - I can't see it. Nonetheless, we never hook up without it.

Yeah, I don't understand this, too. PEX is rated to a much higher pressure. It may be that some RV's are still being made with Butyl pipe. Butyl is notorious for leaking fittings and such.
I've had my trailer hooked to the house system at 80 psi and didn't have any problems. I plumbed the rig with PEX and don't have any water hammer issues or leaks. I also used full-flow ball valves on supply lines instead of the cheaper 1/4 turn valves. :?

Push rivets are sold at Mcmaster-CarrBTW, nice job and good documentation!