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Old 06-04-2013, 07:06 PM   #16
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Canadians, take note! Viega Manabloc


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Originally Posted by jagans View Post
Thanks E, Number 4 shows what people used to do, which is what my friend ran into. I guess the souix chief hammer arresters would work. As far as I know the only valves that close suddenly, as described for being the cause of hammer are dishwasher and clothes washer valves. I would think that unusually high water pressure could cause it too.
My ice maker thumps- who would think a plumber would have water hammer issues....
Take a look at #14

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Old 01-02-2014, 09:26 AM   #17
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I have been thinking of installing a Manabloc system for some time now. I am looking at a 30 port crimp manifold and will re-plumb my entire house. The delay is that I am waiting for the city who have planned to do some new water/sewer road work on my street which will happen within the next 3-4 months. I have worked out deal with the contractor to install a new 1" line from the street to the house. Once this happens I'll run a 1" line from the meter at the front of the house to the manifold. I'll order all supplies for Pex Supply and have it delivered to a UPS store in Buffalo and drive down and pick it up.
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Old 01-02-2014, 10:40 AM   #18
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It's a great system Jozabi. I installed mine about 8 months ago, replacing a failing galvanized and copper system, and the new PEX has been working perfectly.

Here is a pic of the install while in progress. All of the copper seen above was removed.


Old pipes:
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Old 01-02-2014, 11:36 AM   #19
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Thanks for the follow up. Your system looks great. My budget to re-plumb my whole house is less than $2,000 US as I already have opened up a back wall right through to the second floor bathroom which runs right through the main floor kitchen. Everything else is available though the open ceiling in the basement. I can't wait to get started, I am just waiting on the city to start their road construction and get me my 1" service...
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Old 01-05-2014, 08:47 AM   #20
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I found your posts while researching pex manifolds. I've made one repair on my galvanized so I know I'm living on a time bomb, but wanted to make sure I do the best I can do on the manifold since this is the heart of the system.
So many plumbing parts are made in China-especially the plastics- it was a concern. Not to slam but I think the fittings or rings in the Zern lawsuit were China-made aluminum- which provides fuel for pex nay-sayers.
It came down to the Sioux Chief copper manifolds in series, or the Manabloc.
So how is the Manabloc holding up for you? Are the shutoffs stainless steel ball-type or other?
I've read where some reported leaks around the inlets over time, as well as the shutoff valves themselves- anything like that?
It does seem that Viega is the only company that is making the manifold with the full benefit of home run in mind- having combination 3/8 and 1/2 feed lines as an option.
Thanks in advance for your original posts and further updates.
(Also noticed some chat about installing pex up to the hot water tank- and believe this is fine for electric tanks but gas requires about 18" of metal to get
the pex 6-8 inches past the flu)
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Old 01-06-2014, 08:39 AM   #21
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I haven't installed the manifold as yet as I am waiting for the city to bring a 1" line to the meter. I'll post once have completed this project...
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Old 01-06-2014, 06:00 PM   #22
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Thanks, Jozabi. I wish I had planned ahead and done the outside first, too, but I do have to replace this galvanized time bomb- one section already failed so you know what that means.
I must have messed up the first part of my post as I was trying to get to Allthunbs since his system has been in for awhile.
Hitlines, yours looks good- are those the push on connections? Do the valves appear to be of sound quality?
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Old 01-06-2014, 07:56 PM   #23
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And this is better than copper how?
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Old 01-07-2014, 07:49 AM   #24
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ddawg16, who knows? Time might prove it to be inferior to copper. Time might also prove soldered joints without lead to be inferior. Both have been used about the same period of time- although copper by far has been used much more extensively. I like the idea of no joints between manifold and fixture, but still- not sure.
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Old 01-07-2014, 05:18 PM   #25
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And this is better than copper how?
A few reasons:

1. Many fewer joints. Potential for no elbows or tees. This means many fewer potential points of failure.

2. While there is a cost premium, it is much faster to install PEX than copper.

3. Ability to install new line, while still potentially challenging, is much easier than running copper in existing construction, and faster, because the PEX is flexible. Plus there is no need to turn off the water to any of the house while putting in something new.
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Old 01-09-2014, 11:39 AM   #26
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So how is the Manabloc holding up for you? Are the shutoffs stainless steel ball-type or other?
I've read where some reported leaks around the inlets over time, as well as the shutoff valves themselves- anything like that?
It does seem that Viega is the only company that is making the manifold with the full benefit of home run in mind- having combination 3/8 and 1/2 feed lines as an option.
Thanks in advance for your original posts and further updates.
(Also noticed some chat about installing pex up to the hot water tank- and believe this is fine for electric tanks but gas requires about 18" of metal to get the pex 6-8 inches past the flu)
My manifold has been installed for 8mo so far with zero leaks at any of the connections. Each line is a complete home run with one end connected to the bloc and the other with a crimp to a shutoff valve at the fixture. No additional 90s or Ts were used and most turns were gradual or supported with a 90 brace (see the black supports). This pic is before all of the lines were nailed down and properly supported at the bloc.




For the hot water heater you will want to use a pair of the 3/4" FIP x 3/4" FIP, 18" Corrugated Stainless Steel Tube:

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Old 01-09-2014, 01:24 PM   #27
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Why the corrugate stainless steel connection? I already have a tankless water heater which will be located within 4 feet of my manabloc manifold. Would you recommend that I find a 48" stainless steel connection?

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