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MANUALS (6)
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Product Highlights
Description
- Supply adapters must be purchased separately and are required to install this product.
- Mounting straps are pre-drilled to mount 16" center studs. They are optional and sold separately.
- The 10-year warranty only applies if this MANABLOC is installed with all Viega products.
- The MANABLOC Wrench allows you to easily tighten the lock-in nuts for this MANABLOC with precision. This item must be purchased separately, as it is not required but highly recommended.
- 53601: MANABLOC Supply End Cap does not come included and must be purchased separately.
- 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.
Specs
| Loop Size: | 1/2" |
|---|---|
| Material: | Plastic |
| Number of Outlets: | 18 |
| Number of Outlets (Cold): | 10 |
| Number of Outlets (Hot): | 8 |
| Application: | Plumbing |
| Outlet Type: | PEX |
| Fitting System Compatibility: | PEX Compression |
| Tubing Compatibility: | PEX |
| Warranty: | 10 Year |
Questions?
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6 Replacement Parts
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Product Reviews
Most Liked Positive Review
Great Product
Most Liked Negative Review
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Smart Design with some Negatives
Excellent
Flood of 2018
Yes, this is the way to go, product wise.
Convenient and useful - great value
Easier to install then thought
yep
I would buy again
Pex love
Cannot be repaired
Yes
Product Q&A
50 QuestionsQ: We moved into a home that was built in 2004, the house set empty for 3 years, a 30 port Manabloc system was installed. We several issues and not sure what to do. 1. One sink (hot & cold) does not work, checked the values, everything is on, ut no water. 2. Have 3 other locations that the hot water pressure is very low. What needs to be done to try and fix these issues?
Asked by Doug 14 years ago
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Verified Reply- PexSupply StaffAssuming that the valves are all open and working properly, the only issue we can think of is that there is some kind of obstruction in those lines, perhaps a kink in the tubing.
Q: i seem to keep blowing a gasket between #7,#8 hot port is there a repair kit or do i need to buy a new manifold this is my 3rd manablok
Asked by scott 14 years ago
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Verified Reply- PexSupply StaffThere is no way to repair a MANABLOC in between sections. The MANABLOC must be failing due to excessive temperature or pressure.
As far as I know, there is no repair kit. The joint between port 7 and 8 seems to be close to the middle of the manifold. If I had to guess at a diagnosis for why this problem recurs, it would be that your tubing installation is (in some way) placing a bending stress on the manifold, and the most likely place for this to show up is by the middle joint opening up on one side. One way that this might occur is that all tubing from ports on the right side is being forced into a tight cluster 6 to 12 inches from the Manabloc. The tubing may be acting as springs to place pressure on the manifold. Another issue may be that the tubing was not installed with the specified allowance for expansion and contraction with temperature. As Pex cools off it get's shorter. As it heats up it gets longer. If there is no slack in the lines, they could potentially push and pull on the manifold. I would check that the next manifold is mounted securely, and then try to get a little bit of slack in the tubing near each of the ports. Try to isolate the manifold from thermal expansion and contraction of the Pex lines by creative placement of bends in the tubing or clamping hardware. You may have to add tubing to each branch to get the proper amount of slack in the system.
Seems like the issue might be too much pressure in your system. I would be sure to check that before replacing the manabloc. Be sure your pressure is below 70lbs and also you should install an expansion tank near your hot water tank on the cold side to take some of the shockwave out of the system. when you have the pressure issue handled then fix the manabloc.
Q: If I am using Aqapex with propex connectors It is my understanding that I cannot use propex connectors directly to the Manabloc..... how do I make this connection?
Asked by John 14 years ago
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Verified Reply- PexSupply StaffYou cannot use ProPEX connections for the distribution lines of the MANABLOC, although you can connect a female x ProPEX fitting to threaded MANABLOC supply adapter for the incoming feed lines. Crimp and PEX Press MANABLOC connections work with AquaPEX but they each require an extra tool. Compression MANABLOCs, like this one, also work with AquaPEX and no special tools are needed.
The manabloc includes fittings to connect either 3/8 or 1/2 inch pex, either compression fittings or press fittings. If you are worried about press fittings, then use the compression fittings. You do not need additional fittings for the manifold circuits. For the inputs, the manabloc uses adaptors for a press fitting or NPT thread.
The choices for supply connections are listed with the manabloc. I used/ordered the pex crimp style using stainless steel crimp ring. If you don't have the tool, you should get one. The beauty of the stainless still crimp rings and tool is that one tool works on several sizes of rings and if you need to remove a crimp ring, all you do is turn the tool 90 deg and use the tool to cut the crimp and the ring comes right off! (undocumented feature) This saves the fitting and does not damage the pipe. You can find the tool for less than $50 and it will come in handy in situations where the propex/expansion tool is difficult to use. The pex crimp fittings are a little restrictive compared to the propex but one here and there probably won't have a negative effect.
The compression Manabloc kit comes from the factory with the necessary hardware to connect all 24 distribution lines. These are all connected to the Manabloc with the supplied compression-type fitting parts. The connection instructions are shown in the installation manual. Here's a link to the general instructions on the PureFlow site: Viega_PureFlow_Water_Systems_Installation_Manual.pdf<http://www.viega.net/cps/rde/xbcr/en-us/Viega_PureFlow_Water_Systems_Installation_Manual.pdf> http://www.viega.net/cps/rde/xbcr/en-us/Viega_PureFlow_Water_Systems_Installation_Manual.pdf Specific to the compression Manabloc, and your question, see page 47, section 16.2.1. The diagram shows the parts for each connection and their installation order.
Q: I installed a 36 port compression Manabloc 3 or 4 years ago. It has recently started leaking at the connection from the incoming water line. I have seen that you have supply adaptors that I did not know about or use at my initial install and I am wondering if the threads do not match. Can I remove and replace the top piece to the manabloc that includes the supply connections and insatll a new one with adaptors?
Asked by Sterling 14 years ago
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Verified Reply- PexSupply StaffImproper fittings at the supply may be the cause of your leak. The MANABLOC has a unique thread type for both the supplies and the distribution ports. Installing the MANABLOC supply adapters may solve your problem, unless the existing threads have been damaged.
You can not disassemble the Manabloc Manifold. The supply adaptor treads should be the same on all Manabloc manifolds. Check out the supply adaptor page at PexSupply.com they differ based on what kind of supply pipe you have and the connection preference. http://www.pexsupply.com/MANABLOC-Supply-Adapters-764000
Hello, I also installed the Manabloc and did not know that the threads are not pipe threads. This product has a special adapter, which should come with the unit. I have not experienced a leak,yet, I would say you should buy the correct fitting for the unit. You may have a problem with the corrupted threads, but its better than having a threaded pipe connection.
I used brass type connections simular to hose bib connectors, bought at a local hardware store. I don't have any leaks from my incoming supply lines.
What did you use to install your supply line? I think you install the new adapter it would still seal, they have compression rings that should still seal the inlet even if the threads are a little off. Not sure if this helps. I would just try the new adapter before anything else! Its pretty fool proof usually...Ive never had any leaks.
Q: Can the 1/2" distribution outlet be increased to 3/4", with adapter, for the 3/4" tubing necessary for shower valve (rain heads, body sprays, etc.)
Asked by 14 years ago
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Verified Reply- PexSupply StaffUnfortunately the distribution ports cannot be increased to 3/4". 3/8" and 1/2" are the only options there. In cases like yours, the only option on the hot side would be to branch a 3/4" line for the shower off the hot supply line to the MANABLOC.
Q: the pex pipe measured od or id? we need to order a replacement but need this info first.
Asked by 14 years ago
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Verified Reply- PexSupply StaffPEX is sized to have the same OD as copper of the same listed size. When dealing with 1/2" pipe, for example, PEX and copper both have a 5/8" OD. While 1/2" copper has a 1/2" ID, 1/2" PEX (which is thicker) has a .475" ID. An easy way to think about it is that PEX will have a listed size that is 1/8" smaller than its outside diameter.
Q: What is the worst that can happen if I use a 14 port MANABLOCK on a 1/2 supply line. My home is currently supplied w/ a 1/2 water line and I am experiencing no water-related problems?
Asked by 14 years ago
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Verified Reply- PexSupply StaffThe worst that could happen would be that you get insufficient flow. You would also need to find a way to adapt 1/2" PEX at the supplies, which can only accept 3/4" or 1" tubing directly.
Q: I have a 30 port Manabloc. It is about 15 years old and still works great. I turn the outside bibs off every year and leave the rest on. I recently turned off a port valve using the tee handle and the hot port broke (the nex nut on top of the valve twisted off) It is almost shut off but not completely. Is there a replacement valve I can purchase or do I have to buy a new manifold?
Asked by 14 years ago
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Verified Reply- PexSupply StaffReplacement valves are available (part 50602), but they generally only work with MANABLOCs manufactured after Viega took over the line from Vanguard in 2004.
Q: MANABLOC ( 12 ) is in my RV Can you put stopers in 2 of the cold valves and not use them and can I have the size on the 14 valves one ?
Asked by 14 years ago
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Verified Reply- PexSupply StaffIf you're not using any of the distribution ports on a MANABLOC, you simply need to close the valves for those ports. A port cap can also be used to give the unit a more finished look and provide an extra layer of protection.
Q: I have a large amount of connections. I am thinking of using 2 maniblocks. 1 for hot, and 1 for cold. Can I move the color dials to make all the red on one and all the blue on the other?
Asked by 15 years ago
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Verified Reply- PexSupply StaffYou can do this, but, since the MANABLOC is divided into hot and cold sections in its interior, you would need two supplies running to each unit. You can do this by teeing off your main hot line and your main cold line.
The unit has a cold water inlet at the bottom, a cold water outlet at the top (for supplying a water heater), and a hot water inlet at the top. The ports are physically joined internally to either the hot side or the cold side...the color of the valve stem is only an indicator of whether it's a hot or cold valve, it has no effect on which side (hot or cold) supplies that valve. To accomplish what you want to do, you would need to loop the cold water outlet and the hot water inlet at the top, and use the bottom supply inlet for either hot or cold supply to the Manabloc. You'd need to branch your 3/4" cold supply line to the water heater ahead of the Manabloc (you wouldn't want to supply water to the heater through one of the 1/2" Manabloc ports). You would probably be better off using one of the bigger 36 port units, unless even that doesn't supply enough ports for your use.