PEX and water hammers
Steve Barker
with PEX? It'll be a kitchen sink, a bath sink, tub, toilet, and washer
hookup. Only one bath, only one story. Small house i expect to do the
entire job with about 100' of tubing and a new water heater. I probably
will install an expansion tank also.
thanks
steve
BobK207
wrote:
Short answer....yes you need arrestors.
I've done two houses in PEX. Copper valved, home run style
manifolds.
The first house (2 story, 2 bath) had arrestors at the service
entrance, at the input to the cold water manifold and at the washer.
At first I figured I could slide on the need for arrestors for the two
toilets. Once we started using the new system, it was clear that at
least the upstairs toilet needed an arrestor. Luckily I had access
to the upstairs toilet plumbing (in an attic) and could easily add the
arrestor. I added it and the hammer noise when away.
The downstairs toilet only had a very short run of PEX from the cold
manifold, which itself had large SS bellows type arrestor. IMO, the
short PEX run to the toilet combined with the manifold arrestor
prevented any hammer from the downstairs toilet.
On the second home; one story ranch, 2 bath ....we put arrestors
"everywhere"....kitchen cold, washing machine, all toilets......no
hammer.
I would suggest the same arrestor usage....... unless kitchen or bath
faucets are single handle style.
Single handle faucets can be shut off quickly enough to cause
hammer. Even two handle faucets can be shut off quickly enough to
cause hammer if one makes the effort.
If that is the case, I would suggest the use of arrestors on them as
well.
cheers
Bob
Van Chocstraw
> occasion it can cause a pipe fracture.
>
> But water hammer on PEX is much worse. If someone is walking under
> one of the PEX pipes in the basement, they could die due to the water
> hammer. If the water hammer is severe, those flimsy PEX pipes can
> start to whip around at an extremely high speed. The greater the
> water pressure, the higher the torque of the whipping pipes. It's not
> uncommon for a water hammer episode to get these PEX pipes whipping so
> harshly and forceful that they literally shatter several 2x10 floor
> joists, doing serious structural damage to the building, and even
> tearing holes right thru the floor above the pipes. The next thing
> there is furniture falling thru the floor into the basement, and
> heaven forbid a young child is sleeping above these pipes in their
> crib.
>
> Now imagine this. You or a family member are walking thru the
> basement when someone flushes a toilet. Seconds later these PEX pipes
> begin whipping around the basement knocking down heating ducts,
> ripping out wiring, and damaging floor joists. Worse yet, YOU are
> directly under these plastic pipes and you become decapitated and.or
> lose other limbs from your body. Although the PEX industry has put a
> hush on hundreds of PEX related deaths, the word has leaked out and
> this news is quickly spreading. PEX KILLS !!!!
>
> I'd recomment placing a water hammer arrestor every six inches along
> all runs of PEX pipe. The life you save may be your own, or another
> family member.
>
>
> SAFETY FIRST (or shortly after you get drunk).
>
Where did you get this bullshit story?
--
<<//--------------------\\>>
Van Chocstraw
>>\\--------------------//<<
Steve Barker
s
"BobK207" <rkaz...@gmail.com> wrote in message
news:c7a33477-dff2-4f34...@p23g2000prp.googlegroups.com...
George
express. Top posting usually used for email is confusing enough in
threads where everyone else is using normal newsgroup bottom posting but
now your replies just appear as one huge reply with no preservation of
threading.
aemeijers
Check his from- he probably isn't using Outlook Express. Most likely the
Google Groups web interface, which is famous for hosing attribution marks.
--
aem sends...
George
>>>
>> Something is really broken with whatever you set up up in outlook
>> express. Top posting usually used for email is confusing enough in
>> threads where everyone else is using normal newsgroup bottom posting
>> but now your replies just appear as one huge reply with no
>> preservation of threading.
>
> Check his from- he probably isn't using Outlook Express. Most likely the
> Google Groups web interface, which is famous for hosing attribution marks.
>
> --
> aem sends...
It showed this: Microsoft Outlook Express 6.00.2900.5512
and the fix for the really lame quoting algorithm in OE is this:
Put an end to Outlook Express' messy quotes with this automated fix!
RonABC
>
> It showed this: Microsoft Outlook Express 6.00.2900.5512
>
> and the fix for the really lame quoting algorithm in OE is this:
>
>
> Put an end to Outlook Express' messy quotes with this automated fix!
>
> http://home.in.tum.de/~jain/software/oe-quotefix/
I downloaded and installed OE-Quotefix a couple of months ago and it works
well.
Steve Barker
s
"George" <geo...@nospam.invalid> wrote in message
news:glhu0n$mjj$1...@news.motzarella.org...
Steve Barker
steve
"aemeijers" <aeme...@att.net> babbled some shit he knew nothing about in
message news:6s%el.314957$Mh5....@bgtnsc04-news.ops.worldnet.att.net...
aemeijers
My bad- I thought you were shaking your finger at Bob, not Steve.
Rather than use mystery plugins, I just switched to Firefox/Tbird. Only
have to go back to IE and OE for certain sites that won't talk correctly
to anything else.
--
aem sends...
--
aem sends...
George
>
> My bad- I thought you were shaking your finger at Bob, not Steve.
>
> Rather than use mystery plugins, I just switched to Firefox/Tbird. Only
> have to go back to IE and OE for certain sites that won't talk correctly
> to anything else.
>
> --
> aem sends...
>
> --
> aem sends...
Same here, both are free downloads, work well and are easy to set up. I
have never used OE for anything.
In case anyone can't find them they are available at:
The Daring Dufas
> me God.
>
> The PEX industry has been hiding this truth from the public much too
> long. Have you ever seen a garden hose get out of control, and begin
> whipping around? It's similar to that, but much worse, when water
> hammer is involved. How many more lives will die before this truth is
> revealed? It's all about money, profits, and greed. The PEX industry
> don't care how many die, as long as their bank accounts are being
> filled with your money, the money from persons who may soon meet their
> demise due to this faulty product. PEX kills. While the government
> is busy taking away substances in our lives that might harm our
> health, such as cigarettes, alcohol, and narcotics, nothing is being
> done about PEX, a product that can kill instantly. A product that can
> decapitate a large adult person in less than one second, simply
> because someone else in the home flushed a toilet.
>
> Once those pipes begin whipping around, and their fastners break
> loose, the result is far more devastating than most people experienced
> during hurricane Katrina. Entire PEX plumbing systems have become
> dislodged from a building's structure within seconds, and gotten out
> of control, destroying and/or killing everything in it's path. Once
> this occurs, there is no stopping this monster, unless the water can
> be turned off at the curb, or one of the pipes finally breaks, and at
> that point the devastation stops as the PEX pipes get limp and
> retract.
>
> PEX Kills !!!
> You have been warned.......
>
You will have to don your PEX resistant body armor
and helmet before you work on your plumbing soon.
It's my understanding that it is a pending OSHA
rule that will soon be enacted. There is already
a fart absorbing undergarment on the market that
will also be required by OSHA on all construction
sites, especially where there are open flames.
TDD