DIY water collector repair

In detail: do-it-yourself water collector repair from a real master for the site my.housecope.com.

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Good day!
After 2 years after the repair, the problem got out. One of the collector taps, which is almost never used (locked for 11 months a year), a cold water tap, when turning, began to leak from under the butterfly (handle, I don’t know how to do it correctly). If you open - close several times - the flow stops. And so far it flows only in the open state).
The question is - can it be repaired, or what can be done?
I would replace the entire collector, because they put a certain city called TIM. But everything is so cramped there that you will get rid of the figs. Anyway, I can't.
Thanks for the answer.

Video (click to play).

dmkbox wrote:
The question is - can it be repaired, or what can be done?

somehow I tried to repair such a .. otvodik fell off. easy so.

dmkbox wrote:
The question is - can it be repaired, or what can be done?

dmkbox wrote:
I would replace the entire collector, because they put a certain city called TIM.

they asked themselves and answered Image - DIY water collector repair

Plumbing works Moscow and the region

Well, I didn’t write that changing is very problematic without dismantling the wall.
I forgot to write - ball valves.
Therefore, it is interesting - is it possible or in principle impossible to fix it?

give a photo where is this collector hidden

In general, the Russians are just delighted with you. Nowhere else is there such a parallel wiring as you create in your homes. I've seen plumbing - France, Ireland, Spain, England. There is no parallel water supply. It feels like - you (this is me to plumbers - colleagues) just breed people to grandmothers. Pressure gauges, automatic drains, Sediments, reducers, collectors. ..and other set of space weapons. There is such an expression from the classics - Woe from wit. I sympathize with your customers. Here is another confirmation - a valve on the manifold that has not been touched for 11 months. I am sure this is not the limit.
You are building Star Wars - remotes from ships for ordinary apartments. Do grandmothers even know how to use them - your android colliders?
Parallel wiring justifies itself only in the case of underfloor heating and underfloor heating .. There - collectors are needed to concentrate adjustments in one place - compactly ..
My aunt - now an acquaintance - is converting a house near London to one of the Moscow bankers. So he annoyed the plumbers with his collectors that they work there. But - in London - there are no collector parallel wiring. Live easier ..

If a major overhaul is being undertaken, or a bathroom is being built from scratch, then it makes sense to take a closer look at the collector water distribution.

Installation can be carried out both open and hidden.

1. Convenient
All communications are in one place. For example, there is no need to crawl under the sink to turn off the mixer in which the valve box is faulty.
It is especially important if there is only one pregnant woman or children left at home. It will be enough to turn off the desired tap on the manifold.

2. Reliable
From the collector to the consumer there is one solid pipe without connections. In the case of a high-quality pipe, leakage in the wired walls is excluded. (although if, with the tee wiring, the connections were, for example, made of polypropylene (soldering), then the leak is also impossible)

3. Absence of pressure drops
In the case of manifold wiring and the presence of operating pressure, there are practically no pressure drops when using, for example, two sinks at the same time. Moreover, water supply can be limited to each consumer. True, if a manifold with valve taps is installed.
You can limit the water supply, for example, to the toilet, if the pressure in the system is too low. And the fact that the toilet will be recruited 2 or 3 times slower than when fully opened will not affect anything.

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1. Expensive
Dilute water with the help of collectors is an order of magnitude more expensive in terms of material and work if you invite a master. It is worth adding here the cost of the collectors themselves, the additional footage of pipes and, most importantly, it is necessary to provide a place where all this is to be placed.

This is how the collector wiring looks like in the new bathroom of a private house. The pipes were subsequently sewn up.

This manifold has shut-off valves for each branch. Non-collapsible ball valves are installed on the branches.
Under the word "not collapsible" it should be understood that in case of failure one of the taps, they cannot be replaced individually, the entire collector changes. (Or part of it from thread to thread)

In these collectors, we only have the option to open or close a branch. Adjustment with such taps will not lead to anything good.

What can not be said about manifolds with valve and control valves.

Collectors are available for 2,3 and 4 outlets. I have never met anyone else. Collectors are assembled from those available on the market for the required number of outputs. For example, as in the following photo, a 5-outlet collector is being compiled. 3 + 2

They are connected to each other by means of a thread. Sealed either with a rubber gasket as in the photo above (there is a rubber O-ring at the end of the thread) - or other seals, such as flax.

Collectors can be different. With and without shut-off valves. With valve and ball valves. For thread or Eurocone.

It does not matter at all which pipe you use to distribute the water, the collector will fit all types of pipes.

The most important thing is not to save money when buying a collector. If funds are limited, then give preference to tee wiring than to buy low-quality collectors, which may subsequently leak.

Example of a tired manifold on compression fittings:

Looking from right to left, you can see a small hole in the second bend and between the third and fourth.

The manifold was replaced with a new, two-part composite with crimping Euro-cones for MP.

Image - DIY water collector repair

Image - DIY water collector repairImage - DIY water collector repair

Before laying pipes from the manifold, it is worth carefully considering that the pipes do not pass in places where it is potentially possible to drill walls and floors to install walls or appliances.

Here, on the example of this picture, you can see that the pipes are not all nearby, but separated by groups. These are the places on the wall where the installation for the wall-hung toilet is to be fixed.

Subsequently, during the final finishing, the collector is hidden in a special hatch. Hidden from prying eyes. (another object)

Let's see what is hidden behind this door:

If you look closer, you can see that each branch is signed and can be closed at any time. Convenient access to taps, filters and meters.

Here communications are hidden in the wall behind the toilet. The hatch is clearly visible.

In this case, the hatch is completely invisible:

But if you know how to open, then we get convenient access to all communications.
Image - DIY water collector repair

As you can see from the photo and description, it should be concluded: if you are planning expensive or major repairs and funds allow, then the collector wiring will be the best friend when servicing your communications.

It should be noted that in addition to metal collectors, there are also plastic ones. For example from polypropylene:

I repeat from article to article, it is impossible to separately plan the water supply of a private house, outside the house (external water supply with a water supply source) and inside the house (internal water supply at home). Both systems are interdependent and they must be planned (designed) together. Why, you will understand from this article.

The collector wiring of the water supply system, which I have repeatedly written about in the articles Collector circuit of water supply and Methods for wiring the water supply system in an apartment, is well demonstrated in the figure.

On it, we see one pipe through which water enters the system. From a central point, water is distributed to consumers.The central point of the circuit, which is the point of distribution of the flow to consumers, is the collector.

The collector is a special device designed to evenly distribute the flow to consumers. Technically, the collector has one or two inputs (inputs) and several taps (outputs).

It is important to note that the installation of regulating or shut-off valves on the collector outlets is not mandatory, but only complements the collector's capabilities and allows you to shut off the water during the repair.

Another important note. The uniformity of the flow distribution is created by reducing the diameter of the holes at the inlet of the collector and at its outlets. So in the photo we see the collector inlet 3/4 "(22mm), and on the outlets 1/2" (16 mm).

This is how a “clean” collector looks like in the photo.

Again, the main advantage of the collector distribution is the uniform distribution of the water flow to consumers. An additional advantage is the ability to control the water supply of each plumbing fixture separately. However, for a private house, due to the peculiarities of the water supply, there are drawbacks of the collector circuit that can override its advantages.

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First of all, let's figure out the pressure in the system, which is correctly called the calculation of the required pressure. I wrote about this in some detail Calculation of a surface pump: how to calculate the pump head.

It is according to the calculation of the pressure that the required pump is bought for the source of water supply to the outer part of the water supply of the house.

In this calculation, a large share is made up of losses due to hydraulic resistance of pipes. The chain is obvious, the more pipes, the greater their resistance to flow, the greater the resistance, the more pressure is required, the more pressure, the more powerful (read more expensive) a pump is required to deliver water from the source.

The collector wiring of the water supply system in the house differs from the tee wiring precisely by the large number of pipes in the system. After all, each consumer needs to have a separate pipe, and more often not one (CHS and DHW). That is why, for the collector wiring, an increased water pressure is required.

Hence, the collector wiring of the water supply in the house cannot be used with the selected gravitational water supply scheme. Let me remind you that the gravitational scheme of a water supply system is an independent spreading of water under the influence of gravity from the top point in the house.

In addition, it must be taken into account that the pressure of each section from the collector to the consumer must be added to the calculation of the head. This is insignificant, but still, an increase in the required pressure of the purchased pump.

The increase in pump costs is just the beginning of additional costs for collector piping in the house. The costs will increase for the purchase of water pipes, which will be required an order of magnitude more than in the sequential scheme.

Another minus, already the third. If living in a house is only for the summer, and in winter living on short-term basis, there is another serious disadvantage of using water supply collectors. Every time, leaving the winter dacha. You will have to drain water from each beam of the collector wiring.

I do not want to argue that the collector wiring of the water supply system is not suitable for a private house. You just need to prepare for the high costs of work and take into account the features in the calculations. It is also worth considering one more disadvantage.

With hidden collector piping, you will not be able to make joints on the water supply routes from the collectors to consumers. This means that you are limited in the choice of pipes for the water supply. Polypropylene will not work (joints). Copper won't do - welding. Polyethylene in the house is ugly. Only metal-plastic pipes remain.

Reinforced-plastic pipes are connected using collet-type compression joints, and the collet connection can only be used in open areas.In addition, the collet connection can be tightened no more than 4 times during the entire service life, and reconnection is possible only after replacing all the seal rings.

Without making agitation, I note that it is possible to achieve the effect of independent pressure in the system, which the collector wiring gives, if we apply a sequential water supply scheme with a decrease in the diameter of the pipes. For example, for 5-7 consumers from the input we lay d32 polyethylene (or d22 copper). After the first branch, we continue the water supply d25 polyethylene (or d15 copper). After the next branch, we continue the water supply d22 polyethylene (or d15 copper). This reduction in pipe diameter creates a manifold effect with an even distribution of flow to consumers.

In fact, professionals rarely use just one plumbing scheme in a house. Usually, a combined water supply scheme is used: collector wiring of a water supply system in a house together with a sequential (tee) scheme. If there are few consumers, then the collector is not installed at all, and shut-off valves are installed near plumbing fixtures.

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  • Image - DIY water collector repair
  • Image - DIY water collector repair
  • Image - DIY water collector repair
  • Image - DIY water collector repair
  • Image - DIY water collector repair
  • Image - DIY water collector repair
  • Image - DIY water collector repair
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