1/2", 24 Port Crimp MANABLOC (9 hot, 15 cold) Zoom

1/2", 24 Port Crimp MANABLOC (9 hot, 15 cold)

SKU:41243

Brand: Viega

Viega
41243 has been discontinued.
Suggested Alternative:
SKU: 50243
Brand: Viega
4

Resources

Specs

Loop Size: 1/2"
Outlet Type: PEX
Number of Outlets: 24
Number of Outlets (Cold): 15
Number of Outlets (Hot): 9
Material: Plastic
Application: Plumbing
Fitting System Compatibility: Crimp
Tubing Compatibility: PEX
Warranty: 10 Years

Description for Viega 41243

Please Note:

  • Supply adapters must be purchased separately and are required to install this product.
  • Mounting straps are optional and are sold separately.
  • The 10-year warranty only applies if this MANABLOC is installed with all Viega products.
  • 53601: MANABLOC Supply End Cap does not come included and must be purchased separately.

Brass PEX Crimp MANABLOCs provide a home-run distribution manifold for the plumbing system. These MANABLOCs utilize either 3/8" or 1/2" distribution lines. Each MANABLOC comes factory pre-assembled with color coded hot and cold ports. All Brass PEX Crimp MANABLOCs include port Crimp connections, drill templates, instruction guide, faceplate and port labels.

**Requires Crimping Tool.

**Important**
  • The MANABLOC plumbing system carries a maximum pressure/temperature rating of 100 psi @ 180°F. Excessive pressure to the MANABLOC will cause leaks.
  • Do not allow chemicals such as PVC glues or solder flux to come into contact with the MANABLOC. They will compromise the integrity of the MANABLOC and cause leaks.
  • Please consult the MANABLOC install instructions for a more comprehensive list of chemical materials that will cause harm to the MANABLOC plumbing system.

1/2", 24 Port Crimp MANABLOC (9 hot, 15 cold)

REVIEW SNAPSHOT®

by PowerReviews
Viega1/2", 24 Port Crimp MANABLOC (9 hot, 15 cold)
 
4.8

(based on 107 reviews)

Ratings Distribution

  • 5 Stars

     

    (91)

  • 4 Stars

     

    (15)

  • 3 Stars

     

    (1)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (0)

100%

of respondents would recommend this to a friend.

Most Liked Positive Review

 

Once a geek always a geek

The connections work flawlessly with only a hand tight connection. I used the Shark bite stainless clamping system. While it doesn't allow the nut to slide over the clamp, there is enough room...Read complete review

The connections work flawlessly with only a hand tight connection. I used the Shark bite stainless clamping system. While it doesn't allow the nut to slide over the clamp, there is enough room to unscrew the nut for removal of the fitting from the manifold. I prefer these over the copper crimp, as they seem more idiot proof. They are also easier to remove if that situation should arise (and it does).

I noticed no pressure drop in my system over the previous branch system. One significant difference is hot water availability in some cases it seems almost instant (faucet closer to manifold).

All of my workers/contractors and friends are very impressed. Some of them have never seen this system before and agree that it's the way to go.

I'm a Mechanical engineer and I honestly saw nothing I would change. The nuts are a little close quartered, but increasing this area would make the manifold larger/longer, which I thought would be impractical. Someone with fat fingers could experience some difficulty there.

I surface mounted my manifold on a 3/4 pc of plywood backed by 1/2 foam board, which was then attached to an exterior block wall. For my outgoing tubing support I attached 2x4's (parallel to the 4 in plane) to the plywood surface and then used 1/2" clamps position around 3" out from the manifold connectors.

VS

Most Liked Negative Review

 

Could be a little better

The Manabloc is easy to install and appears to function well. My biggest complaint is that it doesn't have enough hot valves. I'm using 3/8 lines to each sink fixture to minimize energy...Read complete review

The Manabloc is easy to install and appears to function well. My biggest complaint is that it doesn't have enough hot valves. I'm using 3/8 lines to each sink fixture to minimize energy waste. This means I need a hot valve for each fixture but not necessarily a cold valve for each fixture. If the Manabloc had an even split of hot and cold, I could have purchased a smaller manifold.

The one-direction valves also create a minor amount of confusion.

There are a few things they could do to the design to make the installation easier, but overall, the product is very good.

Reviewed by 107 customers

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5.0

best on the market

By dockman

from huron sd

Verified Buyer

Comments about 1/2", 14 Port Crimp MANABLOC (6 hot, 8 cold):

this is for my house which is in dire need of re-plumbing. this is the best built unit I've seen, everything is simple to plumb into. support videos are really helpful for planning the job. support straps are a little flimsy and edges are sharp. would definitely recommend.

 
5.0

excellent product, extremely fast ship

By bb

from Hudson wi

Verified Buyer

Comments about 1/2", 14 Port Crimp MANABLOC (6 hot, 8 cold):

came with everything I needed plus extra connectors. Great shipping and help.

 
5.0

great

By rich

from Anderson, IN

Verified Buyer

Comments about 1/2", 24 Port Crimp MANABLOC (9 hot, 15 cold):

Had a water line break in the bathroom and was able to go to the manabloc and sh8t off that individual line. Yet still have use of water throughout the rest of the house

 
4.0

Prompt service, got what I expected

By Tim the Learner

from Central Alabama

Verified Buyer

Comments about 1/2", 36 Port Crimp MANABLOC (14 hot, 22 cold):

Product includes all parts needed for manifold. Easy to install, although instructions include only pictures and no text. Wish the manifold was a little sturdier, but as long as you're careful it should hold up fine.

 
5.0

Money saver!

By Tazcarpenter

from Attica,ny

Verified Buyer

Comments about 1/2", 14 Port Crimp MANABLOC (6 hot, 8 cold):

This product saves time and money ,second time I used a manabloc .first one I used on a flip home and this one I used for my daughters home I built and impressed the inspectors.

 
5.0

Super Great

By gshayeb

from Albany, GA

Verified Buyer

Comments about 1/2", 14 Port Crimp MANABLOC (6 hot, 8 cold):

Easy to install if you make accurate holes at the studs to match the MANABLOC valves. Valves works great.
You don't need to use too much pressure to screw the plastic nuts, don't worry it will not leak.

I did install an additional cutoff valve before the MANABLOC, make it easier for future maintenance if needed.

 
5.0

Great product, easy to work with...

By Bob

from Toronto, Canada

Verified Buyer

Comments about 1/2", 30 Port Crimp MANABLOC (12 hot, 18 cold):

This manifold allowed me to re-plumb my entire house over two weekends. It works great and I am sure that it will impress buyers when I go to sell my house in a couple of years...

 
5.0

good product

By salc

from East Brunswick, NJ

Verified Buyer

Comments about 1/2", 24 Port Crimp MANABLOC (9 hot, 15 cold):

works good, make sure not to over-tight, single main inlet was giving me problems at first but was able to rectify, no issue so far 1 week installed

 
5.0

Quick ship. Product as described

By jamesc

from Port Huron, MI

Verified Buyer

Comments about 1/2", 24 Port Crimp MANABLOC (9 hot, 15 cold):

Used the 24 port manabloc for my whole house plumbing needs. It is noce to have two points of control for shutting off the flow to each fixture. One at he manabloc and one at the fixture

 
5.0

Easy as Pie

By Sweaz

from Elkhart In

Verified Buyer

Comments about 1/2", 30 Port Crimp MANABLOC (12 hot, 18 cold):

No brainer. Easy to install

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Q&A: Ask the Questions, share answers

Do you have questions about this product?

get answers from real customers and in-house experts with AnswerBox.

41 Questions | 93 Answers
Displaying questions 1-10Previous | Next »
  • 1/2", 14 Port Crimp MANABLOC (6 hot, 8 cold)

    Q:

    Can the manifold be installed horizontal (flat) in a crawl space or does it need to be mounted vertical?
    Asked on 5/1/2014 by LDM from Salem, Or

    8 answers

    • VERIFIED BUYER

      A:

      I installed mine on a wall but frankly I don't see why it couldn't be installed on a floor as long as your water pressure is good enough to handle the additional piping.
      Sent from Samsung Mobile

      Answered on 5/4/2014 by Anonymous
    • VERIFIED BUYER

      A:

      The manifold can be mounted in any orientation.

      Answered on 5/1/2014 by Anonymous
    • VERIFIED BUYER

      A:

      It doesn't matter how it lays make sure you have room to work you have to
      be able to crimp fittings

      Answered on 5/1/2014 by Anonymous
    • VERIFIED BUYER

      A:

      Iam sure u can. I dont.see any problem with that.

      Answered on 5/1/2014 by Anonymous
    • CUSTOMER CARE

      A:

      That would be fine. Manablocs can be installed in any direction.

      Answered on 5/1/2014 by SupplyHouse Staff from NY
    • VERIFIED BUYER

      A:

      It can be install on any flat surface horizontal or vertical. Make sure you
      have enough space on all sides to route your PEX. The directions give
      specific mounting requirements for spacing.

      Answered on 5/1/2014 by Anonymous
    • VERIFIED BUYER

      A:

      There are no restrictions on mounting orientation. Horizontal is fine.

      Answered on 5/1/2014 by Anonymous
    • VERIFIED BUYER

      A:

      Position should not matter unless you plan to drain it for freezing conditions. The PEX pipe is great in freezing but the manifold might crack in those conditions. Make sure it's insulated if you put in in a cold spot like an attic. Not sure if the manifold you indicated is copper or plastic. In either case it would not expand like PEX pipe in freezing conditions.

      Answered on 5/1/2014 by Anonymous
  • 1/2", 14 Port Crimp MANABLOC (6 hot, 8 cold)

    Q:

    Can this be mounted outside? Will it freeze any easier than the lines themselves?
    Asked on 2/26/2014 by chris from Gastonia, NC

    3 answers

    • VERIFIED BUYER

      A:

      I wouldn't recommend mounting it outside.  Ours is mounted in the garage on an interior wall.   However,  since we are in South Texas, we don't have to worry about it freezing much.
      Sent from Yahoo Mail on Android

      Answered on 2/26/2014 by Anonymous
    • VERIFIED BUYER

      A:

      Lines are ok for freeze but block its self not. Lines are expendable ,
      block its self is not. Recomend putting block some Place above freezing
      temperature. Hope this helps.

      Answered on 2/26/2014 by Anonymous
    • VERIFIED BUYER

      A:

      I've only installed one of these but would not do it outside where there is any chance of freezing.
      Sent from my iPad

      Answered on 2/26/2014 by Anonymous
  • 1/2", 14 Port Crimp MANABLOC (6 hot, 8 cold)

    Q:

    If I wanted to have a couple of 3/8" runs from my manifold, is there some kind of 1/2" to 3/8" converter that I need to attached at the port?
    Asked on 1/30/2014 by Just Winging It from Spokane WA

    2 answers

    • VERIFIED BUYER

      A:

      Just use one of these: Brass PEX Crimp Port Adapter, 3/8" PEX Crimp x 1/2"
      Port (Zero Lead)
      *SKU:*46624
      *Brand:* Viega

      Answered on 2/1/2014 by Anonymous
    • VERIFIED BUYER

      A:

      Just buy a 3/8 fitting for the block

      Answered on 2/1/2014 by Anonymous
  • 1/2", 30 Port Crimp MANABLOC (12 hot, 18 cold)

    Q:

    Is it possible to make the crimp connections, and then thread the port connectors onto the manifold? I am not sure my crimper will fit if I need to crimp after the port connectors are on the manifold.
    Asked on 8/17/2013 by youstolemynick

    11 answers

    • VERIFIED BUYER

      A:

      Yes.
      The port connectors are made so that the supply hose does not rotate while tightening to the manifold.
      The job would be much more difficult if attempting to crimp while the connector was already tightened.
      Good luck.
      Victor

      Answered on 8/20/2013 by Anonymous
    • VERIFIED BUYER

      A:

      The short answer is YES!
      Once the connectors are crimped, the outer threaded connector turns freely to allow the inner connecter to seat properly and secure them tightly.
      Hope this helps!

      Answered on 8/19/2013 by Anonymous
    • VERIFIED BUYER

      A:

      That's what I do. Measure and cut the pipe, slide on the threaded collar
      and the crimp ring and insert the manifold fitting. Crimp it and then
      screw it onto the manifold.

      Answered on 8/19/2013 by Anonymous
    • VERIFIED BUYER

      A:

      Yes, you can crimp the lines before tightening the plastic nut on the manifold port, but the nut has to be on the brass plug first because it won't slide over the PEX crimp band.
      1) Put the black plastic nut on the brass plug,
      2) slide the crimp ring on the PEX tube,
      3) push the brass plug into the PEX tube,
      4) crimp the band.
      All of these steps are done with the fitting off of the manifold. The brass plug has an o-ring seal, and the plastic nut just holds it in place.

      Answered on 8/17/2013 by Anonymous
    • VERIFIED BUYER

      A:

      Yes, you can connect and disconnect the crimped PEX tubing and
      fittings from the Manabloc manifold anytime. (Just close the valve
      first!) That makes it a lot easier to install or modify a
      connection. Just leave some slack in the PEX tubing when you install
      it; a few inches will do easily. The black plastic nut screws on to
      the Manablock manifold fitting, but the actual liquid seal is
      achieved through the o-ring on the brass fitting that crimps to the
      tubing. The crimped connection is fully rotatable. You don't need a
      lot of torque on the plastic nut; finger-tight-plus is sufficient. A
      pair of channel lock pliers is all you need to tighten or loosen the
      nuts, only because it is hard to get your fingers around the nut
      otherwise. I have had mine installed for over six months with not so
      much as one drop of a leak. It is a nicely engineered system.
      A pair of scissor-action crimpers will usually fit with the brass
      connector already mated to the manifold, but just barely if there are
      already connections to either side of it. The bigger limitation is
      usually finding the room to swing the handles of the crimper, not so
      much getting the crimping head around the connector.

      Answered on 8/17/2013 by Anonymous
    • VERIFIED BUYER

      A:

      If you are already using Pex, then whatever crimper you use for your pex will work. You don't crimp directly onto the manifold. You crimp an attachment to the end of your Pex hose, then the other attachments keep the hose connected to the manifold.
      If you didn't have the correct crimper already, you wouldn't be able to use any of the Pex products.

      Answered on 8/19/2013 by Anonymous
    • VERIFIED BUYER

      A:

      yes, no problem

      Answered on 8/18/2013 by Anonymous
    • VERIFIED BUYER

      A:

      That's exactly how it works. The connectors have excellent seals and are
      easier to tighten than garden hose, even. Finger-tight is plenty. Wiggle
      the tubing just a bit as it's getting down tight, to help the fitting seat
      well.

      Answered on 8/18/2013 by Anonymous
    • VERIFIED BUYER

      A:

      Yes, actually this is the preferred method. Good luck.
      WKM

      Answered on 8/18/2013 by Anonymous
    • VERIFIED BUYER

      A:

      Yep, I used standard compression rings and it worked just like you
      described. Good luck with your project. Ours had been installed for 2+
      years now.

      Answered on 8/17/2013 by Anonymous
    • VERIFIED BUYER

      A:

      Yes you can. The fitting is held into place with a threaded collar. Be
      sure to have the collar on the fitting before crimping.

      Answered on 8/17/2013 by Anonymous
  • 1/2", 24 Port Crimp MANABLOC (9 hot, 15 cold)

    Q:

    I would prefer to use the Pex crimp version of this manifold, but if a line must be removed after crimping how easy is that to do without breaking or cracking the plastic manifold?
    Asked on 3/27/2013 by Lee from Michigan

    3 answers

    • VERIFIED BUYER

      A:

      Howdy
      The Manabloc plastic manifold uses brass quick-connect fittings (supplied)
      -- you do not crimp directly to that manifold. PEX copper manifolds have
      brass fittings soldered on, and you crimp to them. Crimps can be easily
      cut through with a Dremel and the little abrasive cutoff blade. A special
      PEX tool is also available but it costs. If removing a line, DO NOT
      scratch the fitting (esp. the ribs) or it may always leak. I'm completely
      pleased with the plastic one after 2-1/2 years, good luck with yours.

      Answered on 3/28/2013 by Anonymous
    • VERIFIED BUYER

      A:

      I have cut the crimps off before and haven't damaged anything ,, but I do
      think they make a tool ( of course to cut them off)

      Answered on 3/28/2013 by Anonymous
    • VERIFIED BUYER

      A:

      The brass fitting unplugs from the manifold, so there would be no stress when the PEX tube is cut. You do have to be careful not to nick the brass when cutting off the tubing. It's also a good idea to put a clamp or other support about five inches out from each fitting so the PEX tubing enters straight and doesn't put weight on the manifold arms.

      Answered on 3/27/2013 by Anonymous
  • 1/2", 24 Port Crimp MANABLOC (9 hot, 15 cold)

    Q:

    Can PEX clamp fittings be used on the the "crimp" MANABLOC?
    Asked on 11/27/2012 by Jared from Washington

    7 answers

    • VERIFIED BUYER

      A:

      yes you can, you may have to crimp before you put the fitting on the
      manibloc

      Answered on 12/1/2012 by Anonymous
    • VERIFIED BUYER

      A:

      Yes, the crimps and the clamps use the same connectors.

      Answered on 11/27/2012 by BrianM from Washington DC
    • VERIFIED BUYER

      A:

      The portion of the fitting that interfaces with the mainfold system won't be touched by what type of clamp/crimp you use.

      Answered on 11/27/2012 by Anonymous
    • VERIFIED BUYER

      A:

      As long as you can get the black retainer past the clamp fitting you should be okay.  The main thing is that the brass fitting with O-ring must be secured in place.  That said I purchased the tool to do the fitting shown and it was worth the money.  My understanding is that not all state building codes accept the clamp fittings, at least that is what I have been told..

      Answered on 11/27/2012 by Anonymous
    • VERIFIED BUYER

      A:

      I assume that you mean the "CinchClamp" fitting that cinch the two tabs
      together? I believe that those fittings should work ok on the crimp
      MANBLOC fittings. They should work just as well as the crimp rings.

      Answered on 11/27/2012 by Anonymous
    • VERIFIED BUYER

      A:

      The answer is yes, but you must have the special clamp device. The manabloc
      is the same, just the fittings are different.
      WKM

      Answered on 11/28/2012 by Anonymous
    • VERIFIED BUYER

      A:

      Yes they can and they work pretty good too.
      Sent from my HTC EVO 4G LTE exclusively from Sprint

      Answered on 11/28/2012 by Anonymous
  • 1/2", 30 Port Crimp MANABLOC (12 hot, 18 cold)

    Q:

    The manual for the manabloc shows a "divider" plate. Can the user move the divider plate to provide for more hot ports and fewer cold ports?
    Asked on 9/15/2012 by OldHouseJunkie

    5 answers

    • VERIFIED BUYER

      A:

      No, the plate cannot be moved. Choose a different model for more / less ports.

      Answered on 9/15/2012 by Anonymous
    • VERIFIED BUYER

      A:

      I would doubt you are able to move it... I think its pretty sealed up... If you need more hot ports just order a larger one and cap the ports you don't use.
      Sent from my iPhone

      Answered on 9/15/2012 by Anonymous
    • VERIFIED BUYER

      A:

      No

      Answered on 9/15/2012 by Anonymous
    • VERIFIED BUYER

      A:

      No. In order to get the number of hot ports you will need, you'll have to buy a manifold with the number you need. The details will show how many of each port is provide with each type of manablock.

      Answered on 9/15/2012 by Anonymous
    • CUSTOMER CARE

      A:

      No, this is not recommended.

      Answered on 9/17/2012 by PexSupply Staff from NY
  • 1/2", 24 Port Crimp MANABLOC (9 hot, 15 cold)

    Q:

    In the technical data it says this item is made from polysulfone (PLS) plastic.

    A typical polysulfone is produced by the reaction of a diphenol and bis(4-chlorophenyl)sulfone, forming a polyether by elimination of sodium chloride.

    The diphenol is typically bisphenol-A or, 1,4-dihydroxybenzene.

    This type of plastic can contain BPA biphensol-A.

    Does this product contain BPA?
    Asked on 8/13/2012 by Lou from Cooper's Grove, IL

    2 answers

    • CUSTOMER CARE

      A:

      ViegaPEX tubing is BPA free.

      Answered on 8/14/2012 by PexSupply Staff from NY
    • VERIFIED BUYER

      A:

      http://www.greenbuildingadvisor.com/blogs/dept/qa-spotlight/how-safe-pex-tubing
       
      This is the article that I read prior to making my decision. One of the tipping factors was that the mineral leech from galvanic corrosion (copper piping issue) was much more prevalent. The effects of BPA ingestion from water leeching is minimal; however, the ingestion of copper corrosives is not as benign.
       
      I switched my basement from copper to Pex and immediately noticed a difference in water quality.

      Answered on 8/14/2012 by Anonymous
  • 1/2", 14 Port Crimp MANABLOC (6 hot, 8 cold)

    Q:

    Can the Manabloc Crimp manifold be installed with the water supply line on top and the water heater lines on the bottom? In other words, can it be installed upside down from the way you depict it in your pictures? I want to be able to gravity drain the system for winterizing.

    Tom
    Asked on 7/30/2012 by Tom from Espanola, Ontario, Canada

    8 answers

    • VERIFIED BUYER

      A:

      Yes, I had a situation where i needed the water at the bottom.  I called Manabloc and it was OK.  You also can plug/ cap the hot out and just use the outlet valves

      Answered on 8/5/2012 by Anonymous
    • VERIFIED BUYER

      A:

      I don't see why you couldn't mount it upside down and add drain valves to
      the 3/4" supply lines for easy draining of the system. It's a
      sealed pressurized system so it doesn't rely on gravity. I added a bunch of
      1" ball valves on my supply lines so I could shut off one or both of my
      manifolds easily. You could leave one end of a ball valve open so you can
      drain the whole system in minutes.
      Brian

      Answered on 7/30/2012 by Anonymous
    • VERIFIED BUYER

      A:

      Another follow up to my response - The manifold has two 3/4" inlets on top
      and one 3/4" inlet on the bottom. The top left is the hot and top right is
      the cold. The bottom you can use to feed another manifold, but most people
      cap it off. I don't think you could use that to drain the hot water,
      though, just the cold water. To accomplish what you want just flip the
      manifold upside down and add a Tee with ball valves on each supply line
      that are open for draining (into buckets or route a PEX line to a drain or
      outside). Then your cap would be on the top and gravity should take care of
      the draining.
      On my system the water drained out a lot better than my old copper lines
      when I was installing and testing.
      Brian

      Answered on 7/30/2012 by BrianM from Washington DC
    • VERIFIED BUYER

      A:

      yes

      Answered on 7/30/2012 by Anonymous
    • VERIFIED BUYER

      A:

      Yes, you can turn the manabloc in either direction. Good luck with your
      project.
      WKM

      Answered on 7/30/2012 by Anonymous
    • VERIFIED BUYER

      A:

      My dad owns and operates a small plumbing company and uses these products all the time. I have helped install them many times and although we have never needed to do so I can't think of a reason y it can't be done, sounds like a great idea.
      Ian
      Sent from my iPhone

      Answered on 7/30/2012 by Anonymous
    • VERIFIED BUYER

      A:

      No problem, it will work fine either way.
      I have one mounted "right-side-up" with the supply on the bottom, and
      have a drain valve in the supply line (on the manifold side of the
      shutoff) for easy winterizing. But every installation is unique. Go
      for it.
      Joe

      Answered on 7/31/2012 by Joe from KS-Ranch, Nevada
    • CUSTOMER CARE

      A:

      Yes, you can install the MANABLOC in any direction.

      Answered on 8/29/2012 by PexSupply Staff from NY
  • 1/2", 24 Port Crimp MANABLOC (9 hot, 15 cold)

    Q:

    We are considering replacing our copper plumbing system in a 60+ year old home with an all PEX homerun system using a 24-port Manabloc manifold. Our water is considered mildly "aggressive" which is causing many small pin leaks in the copper. It also corrodes some of our brass fittings over time. Are the Viega brass crimp connectors appropriate in this environment? Would we be better served with the polyalloy crimp fittings? Does Pexsupply.com offer a 24-port Manabloc with polyalloy crimp adapters?
    Asked on 6/29/2012 by DBM DIY Homeowner from Connecticut

    3 answers

    • VERIFIED BUYER

      A:

      Your crimp connectors will not be affected by "aggressive" water, as they will not interact with the water. They slip around the plastic tubing and serve only to hold the tubing to the adapters. As for the brass adapters themselves, they should also fair better in your new Pex system. Much of the corrosion that brass pieces are subject to is known as galvanic corrosion. This occurs when two dissimilar metals come in contact in a fluid system. Since you are changing to a plastic piping system, your brass adapters will last much longer. I have had my Pex system for 2 years now, and have had no troubles since I've installed it.

      Answered on 6/29/2012 by Anonymous
    • VERIFIED BUYER

      A:

      Good idea replacing copper with PEX.
      Most corrosion in metallic plumbing is due to electrolysis where
      water as the electrolyte completes a circuit between two dissimilar
      metal portions of the plumbing. A standard method of blocking this is
      to use dielectric unions between the different metals in the system,
      where a standard union is augmented with an electrically insulating
      plastic member between the two sides.. PEX tubing does not conduct, so
      a PEX system provides excellent electrical isolation between the
      occasional metallic piece in the system, much reducing if not
      eliminating corrosion.
      You might also want to have your water tested for pH and install a
      treatment if needed to bring pH into a reasonable range.
      Joe

      Answered on 6/30/2012 by Joe from KS-Ranch, Nevada
    • CUSTOMER CARE

      A:

      If your water corrodes brass fittings, we would recommend that you use the PolyAlloy version of this crimp MANABLOC. We do not stock it, but it is available for special order (part 50243).

      Answered on 7/2/2012 by PexSupply Staff from NY
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