When designing a water supply system in an apartment or house, you have two fundamentally different options.

Serial connection… We put a stopcock at the entrance, we lead one pipe from it, add a tee in front of each consumer (mixer, washing machine, shower). That is, we branch the highway: one branch goes further, the second goes to the consumer.

Beam connection (comb)… After the shut-off valve, a comb (distribution manifold) is installed with the number of outlets according to the number of consumers. A separate pipe leads to each of them.

Which is the best option and why? Here you will need to understand the advantages and disadvantages of each.

Daisy chain: pros and cons

The main advantage such a wiring diagram is the minimum pipe flow. In fact, you have only one line from each line (cold and hot water). For example, if the farthest consumer is 6 meters from the shut-off valve, then the pipes will need 6 meters, plus a little more for branches to different consumers. Since there is only one branch, it can be hidden in the wall – laid in a strobe. This, in fact, is where the pros end.

Now about the disadvantages… Usually, the water supply in the apartment is realized using a half-inch pipe. All consumers are connected to one branch, so if one tap is open, the pressure in the entire line drops.

Probably everyone is familiar with the situation – you are washing in the shower, at this time someone turns on the tap in the kitchen, and your water suddenly becomes too hot or cold. This is due to the pressure drop.

Another disadvantage: if one of the line connections leaks, it will have to be blocked completely. Accordingly, there will be no water in the entire apartment / house. Similarly, with the problems of each consumer. If you have not provided shut-off valves in front of each, you will have to shut off the entire line to replace one mixer.

Beam layout (via comb): pros and cons

You can connect through a manifold (comb). This scheme is much more practical., although it will cost more. Each consumer will be connected to a separate branch, that is, to replace the mixer, you just need to turn the corresponding tap on the comb. In this case, you can use all the rest of the plumbing and appliances connected to the highway. This is one of the main advantages of the beam system.

But not the only one. With this type of connection, all consumers will receive water independently of each other. This means that the inclusion of one will not leave the other without water. That is, the temperature of the water in your shower will not change if someone opens the water in the kitchen. True, provided that the comb is correctly selected. If your branches are bred with a half-inch pipe, the comb must be connected at least three-quarter, and preferably an inch. Otherwise, the deficit will be exactly the same as with a serial connection.

What about the disadvantages? You will need much more pipes, and a whole bunch of them will go from the comb. It is not so easy to hide it – unless you make a box. And the comb itself takes up more space than the tap – you may have to make an oversized plumbing.

Total: which scheme is better?

The realities are such that today they are increasingly choosing a circuit with a collector. It is more practical and reliable, its rays go directly to consumers without any connections (which means you can hide them in the wall and not be afraid that the connection will leak. But if you just need to connect a couple of sinks in the country, you can use a serial connection By the way, if you decide to use polypropylene pipes, read our article about their disadvantages.

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