Connecting a heating radiator to polypropylene pipes -
In our time, polypropylene pipes are more popular when installing heating systems. However, their connection to heating devices, including radiators, has some nuances, so this task raises a number of questions for novice home craftsmen.
Below we take a closer look at how to install heating radiators with polypropylene pipes.

Selection of materials
The popularity that polypropylene pipes have won is due to a number of their positive qualities:
- The price for them is much lower than for metal counterparts.
- High durability, due to the fact that the plastic does not rust, moreover, the sediment is practically not deposited on it.
- Do not need painting.
However, it should be noted that not all types of polypropylene pipes are suitable for heating systems. The fact is that they must have an armoring layer that prevents significant thermal expansion of the pipeline.

Moreover, it is desirable that the reinforcement layer was aluminum, since fiberglass reinforcement leads to saturation of the coolant with oxygen. This in turn causes rusting of metal surfaces of boilers and other heating elements. Pipes that have aluminum reinforcement and are suitable for heating systems are marked with PN25.
Note! When choosing pipes should pay attention to the uniform thickness of their walls. For this you need to look at their cut.
As for the diameter, the optimal parameter is –25 mm.
It is also necessary to purchase fittings, which include:
- Couplings;
- Corner adapters;
- Ball Valves.

Connecting radiators
Wiring diagram
Before connecting the radiator to the polypropylene pipe, it is necessary to draw a system diagram. It should be borne in mind that there are several options for connecting batteries:
Connection method | Special features |
Monotube | This system is the easiest and most economical in terms of materials consumption. However, it is suitable only for small rooms, as the coolant on the way to the last battery heats the intermediate, which leads to their uneven heating. |
Twin tube | It is also a serial connection, however, the hot coolant and the return flow through different pipelines. Due to this, the heating of the batteries is carried out more evenly. |
Collector's (distribution comb) | This method is the most effective, but at the same time, the most expensive. Its principle is based on the parallel connection of all radiators through the collector. |

The choice of the type of scheme depends on the characteristics of housing - the number of rooms, their area, etc. Once you have determined the type of system, you should use your own hands to show the location of the radiators in the room, fittings and all other elements
The presence of such a scheme will allow to calculate the required amount of materials, as well as simplify further work on the installation of the system.

Pipeline assembly
So, the instruction for assembling the pipeline is as follows:
- First of all, you need to cut the pipes according to the dimensions shown in the diagram.
- Next, cut the ends of the prepared segments need to be cleaned from burrs.
- Then the ends of the segments need to be cleaned with a special device operating on the principle of pencil sharpeners. This operation is necessary for further soldering.
- After that, the pipes and fittings are heated in a special soldering iron, after which they are joined.
- Next, the pipeline is mounted to the walls with the help of special holders.
Tip! If you are working with a soldering iron for plastic pipes for the first time, you should practice on trimming before starting to assemble the pipeline.

Thus, the pipeline is going as a constructor.
At the same time it is necessary to observe the following rules for working with the welding machine:
- Before welding, the machine must be warmed up to shutdown, and then wait until it is turned on again.
- It is necessary to strictly observe the heating time of the parts being connected. For different types of soldering irons, it may be different. Therefore, before using the device should be familiar with the table, which is usually available in the instructions.
- It is necessary to connect details exactly, without allowing distortions.
- After connecting the parts they can not be shifted and move until the polypropylene hardens.
In general, the process of welding polypropylene elements of the heat pipe is quite simple.

Installation of radiators
Before connecting the heating radiator to the polypropylene pipe, it is necessary to install it.
This work is carried out in this order:
- First of all, you need to put a markup on the location of the batteries.
Thus it is necessary to consider the requirements of SNiP:
- the distance from the wall must be at least 2 cm;
- the distance from the floor should be about 10-15 cm;
- Then mounting brackets. At the same time it is necessary to use the construction level so that the device is located exactly. For fixing brackets, you can use the dowel-nails.

- After installing the brackets, you need to hang the radiator on them.
According to such a system should install all radiators in the room.
Battery connection
The radiator is connected to the polypropylene pipe in this order:
- First of all, a transition sleeve is attached to the battery. It should be noted that the connection of aluminum radiators with polypropylene pipes is carried out by special couplings, which differ from adapters intended for cast iron batteries.

- Next, a ball valve, a regulating valve or a radiator valve are connected to the adapter.
- Then the valve is connected to the polypropylene heat pipe.
- According to the same scheme, the radiator outlet is connected to the pipeline.
Here, perhaps, are all the main points of connecting radiators to a polypropylene pipeline.
Conclusion
The process of connecting the installation of a heating system using polypropylene pipes is not much different from other types of pipelines. The peculiarity lies only in the method of connecting pipes with fittings, since this process is carried out with the help of a special welding apparatus. In addition, a special adapter is used to connect the radiators themselves with the pipeline.
You can read more useful information on this topic from the video in this article.