On Jan 5, 12:26*pm, Smitty Two wrote:
In article
,





*DerbyDad03 wrote:
On Jan 4, 11:22 pm, "Ed Pawlowski" wrote:
?"DerbyDad03" wrote in message

....

This is more of a discussion starter than a real "I need an answer"
question.

If you Google around, you'll find that many sites list "normal"
residential water pressure as a range, mostly 40 - 60 PSI.

For example, this is typical:

"Water pressure in the District typically ranges from 45 - 125 psi;
however, typical residential systems are designed to function best
under a pressure of 40 - 60 psi. If the water pressure entering your
home exceeds this level, you should install a pressure regulator in
the line to reduce the pressure to an acceptable range.

Why say reduce it to a "range"? Why not say "Adjust the PRV to reading
of 55 PSI" or "60 PSI".

Is there really no noticeable difference between 40 PSI and 60 PSI?

Not a big difference. If they stated a particular setting, people would
go
nuts trying to achieve 50 psi and complain if it dropped to 48 psi or went
up to 52 psi. Saves a lot of phone calls to the water department that
way.- Hide quoted text -

- Show quoted text -

I seriously doubt that all of the various websites that state a
"range" are concerned with limiting the phone calls to the water
authorities.

In other words, I don't think that that is the *reason* they use a
range instead of a hard number.


I agree 100% with what Ed said, and had started to peck out a similar
response to your OP. Limiting actual phone calls, maybe not,

Well, then you don't agree *100%*, now do you? ;-)

but certainly letting the customer know that + / - 20% or whatever is fine..

Except that 60 is 50% higher than 40, so that's quite a difference.

As he said, some people would get OCD on trying to keep it right on the
number.

You mean like me? ;-)