Distinctive features and characteristics of polypropylene pipes
Modern construction technologies for the installation of pipelines for main purposes and intra-house distribution are increasingly using plastic. The advantages of polypropylene include its durability preservation properties( more than 50 years).
Metal pipes have the property of "overgrowing" from the inside, reducing over time their internal diameter. In contrast, no deposits appear on the inner wall of the polypropylene, no corrosion or other damage occurs.
Polypropylene pipes for water supply are completely chemically neutral, do not have toxicity, they do not have any emissions and do not affect the quality of the supplied water. Special stabilizing additives used during the manufacture of the base ensure high resistance to temperature changes and a sharp change in internal pressure.
Polypropylene destruction is impossible even in case of full freezing of water in them. Which again distinguishes them from metal pipes, which are afraid of defrosting and come in complete disrepair in this case. For objectivity, it should be recognized that in this case the diameter dimension is slightly increased. But after thawing the frozen inside of the water pipe completely restores the original geometry of the dimensions.
Polypropylene pipes for hot water supply fully meet modern energy saving trends. They are characterized by low thermal losses due to low thermal conductivity. As is known, up to twenty percent of the temperature of heated water is lost during its transportation to the end user through metal pipes.
And the lack of traditional condensate for pipes on hot water pipes also contributes to significant savings on paints and anticorrosion coatings. One can also list the lack of characteristic "singing" of polypropylene communications( vibration and noise are reliably damped), ease of maintenance of such pipes, savings in all listed positions of installation and operation.
Among all, we can not say that the installation of a water pipe made of polypropylene pipes using welding techniques of couplings ensures durable, super strength and hermetically connected sections and transitions. Moreover, the time of creation of one such connection is several seconds.
Requirements and methods of laying pipes
Polypropylene pipes for plumbing completely admit various ways of laying , including open, under plaster, special mine and channel, external non-channel. The use of special suspensions and brackets compensates for temperature deformations and stresses, can be arranged in the inter-frame space of the GKL skin systems, etc. This and other types of secretive placement are often justified when it is necessary to protect the system from mechanical stress.
Polypropylene pipes for external water supply can be located in the ground. The depth of the communications should take into account the possibility of its freezing. Additional protection can be the use of special plastic or galvanized gutters, insulation.
External placement of polypropylene communications is also possible in boxes with special supports. This type of accommodation often justifies itself in inter-shop or other similar communications. Pipes laid in the ground are another way of reliably locating polypropylene pipelines.
During installation polypropylene pipes for hot water should be placed in special mobile and fixed supports and have a special insulating layer to avoid heat loss. The thickness of the insulating layer depends on the location of the pipe and reaches 15 mm.
The correct arrangement of supports, expansion joints, elbows is completely determined by the selected methods of compensation measures of thermal deformation. This includes the number and type of knees and supports, the choice of the length of the compensator section. Especially it is necessary to take into account these features for the external parts of such water supply.
Features of installation of polypropylene pipes
Although polypropylene pipes for cold water, like pipes for hot water, are simple for mounting and assembling , you will need a special tool capable of providing all of their advantages. And first of all you will need an electric welding machine with paired nozzles of the appropriate dimensions.
To clean the nozzles, alcohol is also needed( can be replaced with tantite).We need a cutter( specific, with a cutting roller) or special scissors, a sturdy and sharp knife with a shortened blade, a natural fiber cloth, a tape measure or a meter, a marker. To prepare the edges of a reinforced pipe, a special cleaning device will be needed.
During the work of an electric welding machine, all the requirements of the instruction for its operation must be met. The installation instructions for polypropylene pipes usually warn of the need to comply with the requirements for bends, elbows, minimum bending radius, etc.
Possible damages during the welding process further lead to stratification and leakage of polypropylene. One of the methods of bending operations in the absence of a special pipe bender is filling the pipe with sand and carefully bending it at the right place with your hands.
