Having estimated heating services condition, you have come to conclusion that pipes need replacement. The most important criteria when choosing new pipes is their durability, suitability to use in services of heating and hot-water supply and mounting cost.
Instruction
1. From metal pipes the most widespread – steel. These pipes can be welded, and can – seamless. The last are more reliable. The steel pipe with corrosion-resistant coating, for example, zinced, is more durable as it is protected from premature destruction. When mounting these pipes it is necessary to consider that the protecting cover collapses owing to thread cutting. Therefore it is necessary to provide anticorrosive protection of all threaded connections.
2. Remember that in those heating systems where antifreeze is used, it is impossible to use galvanized pipes. The protecting cover will be destroyed by the substances which are part of antifreeze.
3. For the device of heating system copper pipes will become fine structural material. Copper is resistant to temperature changes, corrosive influence of tap water and influence of ultraviolet rays. Pipe installation from copper designs is quite convenient.
4. Establishing copper pipes, provide protection of aluminum elements of system (heating radiators). The fact is that in interaction of copper and aluminum in corrosive medium there is chemical reaction which is followed by considerable gas generation that can lead to rupture of radiators.
5. In order to avoid damage of system of a similar type it is necessary to use the special fitting and adapters made of plastic or steel. Radiators need to be supplied with special gas valves. When mounting the hot water supply it is necessary to be guided by instructions for work with copper and norms Construction Norms and Regulations.
6. Since 1996, use of polymeric pipes which attract with convenience of mounting, the low weight and high corrosive resistance is entered into practice of construction. Chemical neutrality of plastic pipes provides lack of overgrowing of their internal surfaces eventually. The system made of polymeric pipes is protected from formation of stray voltages.
7. Today producers offer the plastic pipes made of polypropylene, polyethylene of the increased durability, the sewed polyethylene, unplasticized polyvinylchloride (PVC), the reinforced polypropylene, etc. Before acquisition of any given products study its properties and features of application.
8. The metalpolymeric pipes representing sandwich construction are reliably protected from oxidation. They well bend and keep the given form that allows to use them in systems, complex on configuration. At high flexibility the metal plastic pipes do not lose the durability. They are effective in open wiring, including for connection of radiators and other devices.