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1/2", 30 Port PolyAlloy Crimp MANABLOC (12 hot, 18 cold)

Brand:
Viega
SKU:
50303
Rating:
(151)
Q&A:
(45)
1/2", 30 Port PolyAlloy Crimp MANABLOC (12 hot, 18 cold)
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50303 has been discontinued
Discontinued March 18, 2023
This product was discontinued by the manufacturer.
Direct Replacement:
30 Port MANABLOC without Port Adapters (12 Hot, 18 Cold)
Brand:
Viega
SKU:49625
(6)
Order by today, receive 63 by Tuesday
VIEW REPLACEMENT
VIEW REPLACEMENT

Product Highlights

Product Highlight: Fitting System Compatibility
Clamp, Crimp
Product Highlight: Material
Plastic
Product Highlight: Outlet Type
PEX
Product Highlight: Number of Outlets
30
Product Highlight: Tubing Compatibility
PEX
Product Highlight: Warranty
10 Year Warranty

Description

**Requires Crimping Tool.

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.

**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.

PollyAlloy 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 PollyAlloy PEX Crimp MANABLOCs include port Crimp connections, drill templates, instruction guide, faceplate and port labels.

Specs

Port Size:

1/2"

Fitting System Compatibility:

Clamp

Crimp

Material:

Plastic

Application:

Plumbing

Outlet Type:

PEX

Number of Outlets:

30

Number of Outlets (Cold):

18

Number of Outlets (Hot):

12

Tubing Compatibility:

PEX

Warranty:

10 Year

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Product Reviews

4.8 out of 151 reviews
99% would recommend this product
4.8
out of 151 Reviews
99% would recommend this product
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5 star
83%
4 star
15%
3 star
1%
2 star
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1 star
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Customer Images

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 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

Not rebuildable if broken

The main inlet cracked at the threads and from what I read is not a piece sold individually. I ended up buying a whole replacement for a piece that is assembled and I'm sure there is a big box of end caps laying on a shelf that could be available so these things could be rebuilt as needed but that is not the case. The unit works great when working but if something more than a simple o-ring goes wrong and you have to throw the whole thing away. If I wasn't already set up for it I may not have bought another one. The water flow and pressure are balanced perfectly across the unit no matter how short/long the run is. If you have to take it out of service you will have a birds nest of fittings to bypass this while your new is being shipped.
Showing 1-10 of 151 reviews

Manabloc with PEX x Threaded ends

Works as described. The kit was missing the 3/4" supply nuts but I called customer service and they found the missing parts and sent them to me.
J
Altoona, PA
4 years ago
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A quality Product

One of the best ways to plumb a house
Dee Zee
Michigan
4 years ago
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Just what I ordered. Fast service

Due to shortages locally I found what I was looking for online. Competitive price and fast service kept me from burning $4.00/ gas
Brad
Ks
4 years ago
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Works great so far

The Instructions were fine. However, I didn't really have enough space to install it as instructed because I was replacing a 15-year-old system from an unknown manufacturer that didn't allow for the proper spacing of the PEX tubing (as you can see.) However, all's well that ends well. It took about a day because I had never done one before, AND I used manual crimpers - do yourself a favor and get an auto-crimper! Spend the money! My hands were cramped for days afterwards. Arrgg! Still, easy job it you take your time and double check everything. Test each line as you go. I made some mistakes by NOT actually crimping some rings a few times or actually NOT adding the crimp ring to each section of PEX tubing to begin with. I also added a plastic barrier to the back and a bag/basin/outlet for any water that may eventually leak (and it WILL leak, eventually...) to catch and drain into the garage, not the wall space. Do NOT let it leak into the wall space. EVER. I did test the line pressure and temp before I ordered, so within stated tolerance. I have a 1-inch PEX line coming into the house, 3/4-inch PEX going to the hot water heater and back from it, and 1/2-inch PEX to all the plumbing fixtures, so I ordered the appropriate connections and spare caps for the unused ports. Order extra in case you need them! Watch the installation videos, and DO NOT force the caps or connections - everything is HAND tightened! It should all connect smoothly - do NOT force - and DO NOT touch anything with a wrench. NO wrench! Wrench = BAD! NO WRENCH! Got that? Otherwise, you'll need more than a few spare parts - you'll need a new manifold again.
Tim
Dallas TX Area
4 years ago
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Works Great

Replaced our old leaking manifold. Make sure you have a pex tool to clamp on new ends. Or have an HVAC technician replace it.
Let's Go Brandon
Bedford PA
4 years ago
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Not sure.

The ordering process and your product selection were ideal, the delivery time frame also reasonable and ontime. The only issue I had or have, is the Manifold box it came in not the delivery box, looked like it was a used unit and parts were tossed about via ripped packages, the orange caps to keep dust and debris out of the manifold were all off and split on the sides. The manifold itself look almost used, scuffed up and dirty, the labels were torn and falling off of the sheet. The reason I put not sure for a heading, is I have not installed it yet and used it in real time to confirm if it works well and consistently. I will take a few years on that review.
JM
South Dakota
4 years ago
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Amazing costumer service

Haven't installed the product yet but looks to be of good quality
CK Construction.nc
North carolina
4 years ago
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Beats a branched line install

Used this to replace the old KITEC branched plumbing throughout the house. Pros: - Eliminates need for any fittings other than at the manifold and the fixture - no worries about leaks in walls or ceilings - Very easy to attach each branch line with the supplied compression/crimp fittings - hand tightening the compression fitting appears to be sufficient as stated in the instructions. - Can be surface mounted for retrofit installations like mine - Comes with labels for each branch - Can be installed by one person - Quicker than expected delivery, item was on backorder when I ordered but it still showed up a few days earlier than the earliest expected date. Cons: - Blank/unused cold ports all have very, very slow leaks even when valves are fully closed. Minor tweaks to loosen/tighten the valves and try and find the "right" spot for fully closed didn't stop the slow drips. Will need to put on all of the compression fittings and add short stubs of PEX with plugs crimped on to keep from leaking long term. Not a big deal, but means to use any of those spare ports in the future will require cutting off the crimped PEX to free up the valve, a minor annoyance.
Caleb
Nebraska
5 years ago
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Great company.

Super fast delivery and worked out issues with my order promptly. Will use for all my future supply runs.
Pianofiend
Wadsworth, Oh
5 years ago
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Makes a clean look

If you're looking for a great home run option, this is it. Quick connections work great, only thing I wish an option was to extend both hot and cold. There might be but I didn't see it when I was looking. Don't forget to add another bag of fittings, if you want it to look nice...
King Plumbing
Massachusetts
6 years ago
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Product Q&A

45 Questions
45 Questions
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Q: I have to drain my system for the winter. Does the manifold have a drain plug so I don't have to dis-connect each hose connected to the manifold?

Asked by Ted 15 years ago

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The MANABLOC does not have a drain plug.

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Q: can i use the 3/4 in male npt maniblock supply adapter for the supply for hot and cold. also can i use that adapter to come out of the 3/4 port on the top to run to my sprinkler system.

Asked by paul v 15 years ago

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You can use the supply adapters to supply water to your MANABLOC. It is also possible to use the cold water supply on the top of the unit to supply your sprinkler system.

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Q: Does Manabloc make a 1/2" 18 Port Crimp Brass Pex Crimp manifold. I can only find a 3/8" 18 Port Brass Crimp Manifold on your wedsite.

Asked by Dave 15 years ago

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18 port 1/2" MANABLOCs are only currently available in compression style. See the link below. http://www.pexsupply.com/Viega-36183-1-2-18-Port-Compression-MANABLOC-8-hot-10-cold

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Q: i am going to run 3/4 out of the bottom port to my sprinkler system what fitting do i need to make this connection to 3/4 pex or is it included already. also do i need the mounting straps of im mounting it to plywood.

Asked by paul v 15 years ago

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You will need a supply adapter ( http://www.pexsupply.com/MANABLOC-Supply-Adapters-764000 ), which is not included with the unit. The MANABLOC does come with a mounting bracket built onto the unit.

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Q: is there a maximum pressure the manifold can handle from the main coming in.

Asked by paul v 15 years ago

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The MANABLOC can handle up to 150 psi.

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Q: do i need to put a shut off at each fixture or can i use the shut off on the manifold. (excluding hose bibs which will have their own shut off's.)

Asked by paul v 15 years ago

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You do not need to, but certain local codes require a shut-off valve near the fixture.

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Q: Is the crimp manabloc compatible for use with the stainless steel pex clamp system or strictly for the brass pex crimp ring system?

Asked by Peter the plumber 15 years ago

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You must use a crimp ring system with the crimp MANABLOC.

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Q: can you use shark bite connectors with this product?

Asked by 15 years ago

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Verified Author and ReplyVerified Reply- PexSupply Staff

This is a Crimp MANABLOC. It uses crimp connections at all its ports. You can use Shark Bite connectors at the other end of the tubing. We recommend that you use a compression MANABLOC if you do not want to use extra tools.

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Q: Is this manifold compatable with the use of pinch clamps?

Asked by kb splash 15 years ago

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This MANABLOC is designed for use in a Crimp install (not a stainless steel clamp ring system).

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Q: Are Viega manifolds compatible with Uponor brand pex tubing? I realize I can't use the ProPex expander method at the manifold, but can I use Uponor's pex tubing?

Asked by FarmerBob 15 years ago

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Yes, you can use Uponor PEX.

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