There are several schemes for laying pipelines: either sequentially connecting plumbing fixtures using tees, or in parallel, using a comb.
Installation of pipes through the comb is convenient because plumbing fixtures are connected independently of one another. This is not only a very reliable connection, it also makes it possible to disconnect a separate branch in the event of an accident, without disturbing the operation of the entire system in order to replace or repair an individual device. A plumbing comb makes life easier for the owners of an apartment or house, and also creates convenient conditions for specialists to perform repair work.
Benefits of Parallel Connection
In Soviet times, the wiring in heat and water supply systems was most often used single-pipe with a tee connection. It was a less material-intensive and cheaper solution. But the disadvantages inherent in such wiring do not meet modern requirements for comfort and service.
Nowadays, collector wiring is increasingly being used, which allows you to connect not only standard plumbing equipment, but also pools and underfloor heating, since the plumbing comb ensures even distribution of water to each "consumer" and adjusts the hydraulic process in the system.
Combs are made on 2, 3 and 4 exits. If it is necessary to connect more devices, several collectors are selected, which in total will give the desired number of outputs, and are connected in series with each other. Such a connection is very convenient when it becomes necessary to carry out repairs in the bathroom or in the kitchen. With a control valve or tap, you can block the flow of water to the desired outlet and easily replace the device.
Mounting the comb
According to the rules, the plumbing fixture is mounted independently on hot and cold water (for this, for convenience, the collectors are mounted in red and blue, respectively). They are placed on cold water pipes after filters and pressure reducers, which level sharp pressure surges in the riser. Using special clamps, combs can be mounted directly to the wall, or can be mounted in a box. There is a possibility of connecting heat meters to heating devices.
For ease of regulation, a plumbing comb with taps is installed. Most often, collectors are made of cast iron or bronze, stainless steel, less often - of titanium.
Pros and cons of installing a comb
Pros :
- The absence of temperature and pressure drops with the simultaneous inclusion of several consumers.
- Convenience in service: each device is turned off separately, without stopping the operation of the entire system for repair, maintenance or replacement.
Cons :
- Relative high cost in comparison with a single-pipe connection scheme. For good combs, the plumbing distribution price ranges from $ 120-150, and sometimes they require a few, plus an additional number of fittings and pipes.
- The collector itself takes up a lot of space if there are more than four connected devices.