Heat is escaping and the house is not warming up? Heating pipes need to be replaced!
In many apartments, heating pipes were not repaired for decadesDuring this period, the devices wear out significantly.
In order to restore their effective operation, old systems are changed.
The main thing here is entrust the work to professionals or else carry out work in accordance with the recommendations of specialists.
Content
Replacing heating pipes: when and what to replace them with?
The main reason for replacing heating is the need to change the layout of the premises. Similar work is carried out in cases where the system does not cope with its functions.
It is best to dismantle old structures. in the summer, immediately after the end of the heating season.
In the fall, before the launch of the heating system, specialists are unable to replace the devices. In such situations, due to the work, it will be necessary turn off the riser in the entire house.
There are many types of pipes that are used for heating residential buildings. They differ from each other in the material they are made from. The following types are popular:
- stainless steel corrugated structures;
- galvanized;
- steel;
- polypropylene;
- metal-plastic;
- copper.
Replacement Procedure. Tools and Equipment
To date, it has been developed clear outline replacing pipes in the apartment.
Attention! Stick to a specific order of actions, otherwise this will happen system depressurization, leaks will occur.
In order to remove the batteries, you need to prepare the appropriate inventory:
- screwdriver;
- pliers;
- roulette;
- building level;
- key;
- pencil;
- impact drill;
- Mayevsky cranes;
- fitting;
- plugs;
- welding device.
Riser discharge
To get started, drain the coolant from the risers and dry them. After this, you need to make sure that there is no water left in the plugs and collectors. To do this, go up to the apartment and unscrew the tap. Noise and hissing, which appear after this, indicate that air has entered the pipeline, displacing the remaining water.
Thread cutting
Initially cut off the old riser. It is better to do this near the ceilings, since this is where corrosion occurs most often. To do this, it is important to cooperate with the neighbors on the lower floor.
Important! No need to choose places near bends or directly near the floor.
The work process consists of the following actions:
- To begin with cut pipes under or above the ceilingThis can be done using a grinder or a hacksaw.
- The pipe remaining in the ceiling knocked out in any direction depending on where the cartridge case is left.
- They clean off the paint and chamfer the ends. This is because the die needs a lead-in to cut the thread.
Photo 1. The process of cutting threads on a heating pipe. It is done using a special tool.
- Having put the long end of the plate on the pipe, they press very hard.
- With a key start rotating the plate, while holding the pipe to compensate for rotation.
Assembling the system
The process of assembling risers directly depends on what type of system was chosen. When working with materials such as cast iron and brass, you have to be careful. They more brittle than steel. Experts recommend using as a winding polymer thread or plumbing flaxAdditionally, you can apply paint, drying oil or silicone sealant to it.
To assemble the riser, use special fittingsThey come in crimp, threaded, welded and flanged varieties. This is what determines how they are used.
Eyeliner
When there is shut-off or control valve on the supply line, take care of the jumper equipment. It will allow, if necessary, to drain water from the heating device if it is shut off due to a breakdown.
Reference. It is better not to use screw valves. More effective are considered Ball-shaped closing elements.
Pressure testing and launch
The crimping process is carried out using special cranes, which are located near each radiator.
These elements need to be opened and connected to a special pump.
He increases the pressure in the system to 6-8 kgf/cm2. Pressure testing reveals damage if present.
Before this process each section is isolated.
In order to start water in the system, the valve in the basement opens. This allows you to slowly fill the pipes, avoiding significant water hammer. When the noise disappears, inspect the riser at all joints. If everything is OK, simply bleed the air from the radiators Mayevsky crane.
How to connect products
To connect metal pipes of the heating system, use electric welding. For this purpose, electrodes capable of conducting current are used. They act as "additives" that fill the seam.
Basic conditions for ensuring high-quality welding:
- First, the system is cleaned of dirt, dust and other contaminants.
- Deformed ends are corrected by cutting them evenly.
- In case of arc welding, the internal and external surfaces are cleaned.
- The elements are welded with a continuous seam from the outside.
Arc welding is carried out in several stages. If the thickness of the pipes up to 6 millimeters — will be required two layers, up to 12 - three, and more - four.
Photo 2. The process of electric welding of heating pipes. The procedure must be carried out in protective glasses.
Is it possible to weld with cold welding?
Cold welding is also used to assemble the pipeline, the essence of which is not in the process of connection, but in the methodthe method of gluing with a special substance.
Important! This substance is used to connect pipes in cases where they are carefully cleaned of dirt and dried.
The composition of the cold welding glue includes: epoxy resin, additives (for example, sulfur) and metal components, responsible for strength.
Useful video
Watch the video that demonstrates the process of replacing heating pipes.
Following the rules is the key to success
To ensure that the pipe replacement is successful, It is important to strictly follow the requirements and recommendations of specialists, ensure that the diameters of the products correspond to the same parameters of all connecting elements used.
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