wrote in message
ups.com...
Appliances are generally rated up to 80. I certainly wouldn't go above
this unless you have a really good reason to do so.

As others have noted 40-60 is typical.

I read somewhere that the single biggest cause of home flooding is
washing machine hose failure. Pressure is a big contributor here.

I agree...sold washers for 15 years and as I remember the user's manuals
recommend no more than 60 lbs pressure as a continuous pressure. Any higher
invites the mixing solenoids to fail and open, flooding the house. And of
course the higher pressure shortens the life of hoses, also. I lived in AZ
for a while and one house there had pressure of 90 lbs. After the copper
pipes burst under the slab twice in two years, I added a regulator and set
it to 60 lbs. Two of my neighbors had also had problems with a leak under
the slab. I didn't notice much loss of pressure at the shower head which was
on the other side of the house from the incoming line.
Tom G