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Old 07-04-2012, 08:52 PM   #31
sacramento plumber
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Location: born and raised in San mateo ca. living in Sacramento Ca for 3 years now.
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PLEASE tell me no plumber would do this!

air chambers are required in San Francisco if you don't have 12" height can increase to 3/4 6" long chamber

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Old 07-04-2012, 11:00 PM   #32
Join Date: Aug 2010
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PLEASE tell me no plumber would do this!

As to "any where in the line" we were talking about the 20" or so line from the cabinet bottom to the shut off on top--so I believe he will be fine.

I understood what you were saying. I just want to make it crystal clear for any readers with less knowledge.

I wonder if that is a new Canadian code ?
It's been there for at least 10 years and they specifically mention that 'air chambers' are not acceptable to remedy water hammer and WHAs are the only acceptable solution. They also mention that not all piping systems require arrestors, talk about leaving themselves a big out.

I have never heard of the air chamber. Is this a MUST? Everything has been working fine for the last 10 days or so since we switched over to my redone plumbing

Arrestors aren't a must where I am, but check with your local authority to be certain. They are highly recommended however. Remember that building codes are a minimum standard and the local requirements may be more stringent, but never less. Ball valves are the way to go, so good choice (guess).

this is a good read indeed so from what they say a central expansion tank is not going to do the trick. Anyone have a comment on that?

An expansion tank is used to accommodate the expansion of water as it heats. Thermal expansion can result in such things as continuous dripping of the T&P valve on the water heater, faucets, etc...
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Old 07-05-2012, 03:08 PM   #33
Join Date: Jun 2011
Location: Central Iowa
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PLEASE tell me no plumber would do this!

Hmmm I guess I have to add a few things... shoot... any idea what one costs? If I need them at each fast closing valve, I need a bunch of those.
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Old 07-05-2012, 11:29 PM   #34
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PLEASE tell me no plumber would do this!

I can't give pricing off hand but you should have them at any fast acting valves like washing machine, dishwasher, fridge water line. One suggestion for the washer is to get the kit, aka 'a laundry box'.

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