Wet Boots: Thanks for input. The Irritrol looks ok, but the 150psi rating isnt much above my static pressure. I worry. I take your point about parts - are there any I should avoid because of this?
Lush96: This is not for indoors. The only water line going into the house is _for_ the house, regulated at 60psi, and in nice copper piping which is probably rotting away in the concrete slab. Thanks for reminding me, I'll be losing sleep again
I plan to put the master valve right after the backflow preventer, which is above ground outside. After having numerous failures of inground PVC lines, due to (1) joints unjoining - possibly poor quality work by original installer, (2) fittings cracking due to major displacement of lines by roots over 20 years (3) high pressure,
in addition to a couple of (plastic) valves detonating and a couple of good quality new valves leaking from the body, I am somewhat paranoid. The master valve will limit the scope of failures and give some control of downstream pressure. What I don't want is for the master valve to fail
I guess I still have an irrational leaning towards brass. How about the Rainbird GB series? Any issues with these apart from the cost? I think they are rated at 200psi vs the 150psi on the Irritrol plastic valve.
(btw if you think the list of problems above indicate I should completely replace the system, you're probably right. But it isnt going to happen any time soon).
Thanks!