On Apr 16, 5:29 pm, "Eigenvector" wrote:
"BobK207" wrote in message
oups.com...
On Apr 15, 8:10 am, "Eigenvector" wrote:
"Oren" wrote in message
. ..
0On Sat, 14 Apr 2007 17:49:58 -0700, "Eigenvector"
wrote:
"Oren" wrote in message
. ..
On Sat, 14 Apr 2007 17:08:40 -0400, "Edwin Pawlowski"
wrote:
Do you have pressure near 130?
If so, try another gauge!
--
Oren
"The voices in my head may not be real, but they have some good
ideas!"
Hey, is there something wrong with wanting a nice forceful stream of
water
to wash away the grime and dirt?
Not at all.
An inspector for the sale of a home; said, in his report the pressure
was to high - post 85 something. The buyer wanted me to fix this
issue.
I used another pressure gauge and challenged him.!
We meet in the middle; nothing forceful about it.
Personally I only fully wake up when subjected to 140 degree water at
120
to
130 psi. But I guess some people are more tolerant...
Good for you.
--
Oren
Goddamn, did you guys all check your sense of humor at the door this
morning
before signing on?
Probably 
But EV.......the ASTM testing & rating probably have some sort of
safety factor in them so if you reduce from there you're adding safety
factor on top of safety factor.
The allowable shear stress in wood is ~100psi........so does having a
wooden member stressed to 85psi mean "cutting it kind close"?
IMO..... not really, since shear failure in an average timber occurs
at 400 psi or greater,
I just re-PEX'd & have a pressure reducer set for 65/70 plus I have a
system relief valve & water hammer arrestors so my peak pressure
should be pretty much under control.................
we'll see how it all works out
cheers
Bob
Yeah I know there is a tendency to overdo the factor of safety portion. I
actually do keep my water heater at the upper end, but assuming the temp vs.
pressure numbers are accurate I still have quite a bit of leeway.
Given the pretty dramatic swings in water pressure, I consider 30psi to be
pretty large, having a regulator/reducer may not be a bad idea - but that's
not a major pressing matter.
EV-
I missed this in one of your earlier posts
......... Considering the dramatic increase in water pressure after
replacing my hot
water lines, I can only imagine what it would be like once the cold
water
lines are replaced (it's all galvanized). .............
I believe you are are mistaking the increased flow as "a dramatic
increase in water pressure"
the static pressure in your system is at the level suplied by the
water company (30? to 75psi)......when you use water the pressure can
only drop, when you shut the water off you can get short duration
pressure spikes (water hammer).
Pex by it's nature reduces water hammer (Pex is much less stiff tthan
steel pipe or copper tubeing), so the Pex itself acts like a water
hammer arrestor...an accumulator..
Additonally, water hammer arrestors (required on all quick closing
valves; dishwasher, washing machine, ice maker) will reduce these
spikes.
cheers
Before I believed your neighbor....I'd take some pressure readings.