Polyethylene water pipe - modern look
Today the construction market offers a large number of different types of pipes, among them: polypropylene( PP), polyvinyl chloride( PVC), polyethylene( PE), metal-plastic pipes and cross-linked polyethylene( PE).Particularly distinguished by the builders of PEX-pipes, which are resistant to the influence of alkalis and acids, in addition, they do not deteriorate under the action of cement and plaster.
The material from which polyethylene pipes for hot water are made, can withstand temperatures from -110 to +110 degrees Celsius. This element, due to its durability, can be used in systems that are subject to freezing. At the heart of the multilayered varieties lie two layers of PEX, which separate a small layer of aluminum. They combine the properties of plastic and metal. It is thanks to aluminum that the elements become resistant to many environmental factors.
Polyethylene pipes for water supply - pros and cons
Despite the popularity that polyethylene water pipes have won, their technical characteristics caused some significant pluses and minuses that affect their operation. Among the advantages are the following:
- resistance to corrosion, because polymers do not enter into electrochemical reactions;
- plastic is environmentally friendly;
- service life is five times greater than that of steel analogs, and it can be more than 50 years;
- light weight;
- small noise from the water flow;
- thermal conductivity is low;
- installation is simple and does not take much time.
Among the disadvantages are the following:
- can not be used in fire water supply systems;
- there are restrictions for heating and hot water supply systems;
- installation of water pipes from polyethylene pipes has its own nuances.
Installation of plumbing from polyethylene pipes - features of choice and installation of
When purchasing polyethylene pipes for water supply, it is necessary to ask the supplier about the presence of the permit documentation provided by the manufacturer. Also ask about the polyethylene brand, let them give you a copy of the certificate for the material.
If you get specific and positive answers to your questions, you can safely make a purchase. Pipes polyethylene water, GOST 18599-2001, must be selected carefully, this is the guarantee of the reliability of your communications.
Attention must be paid to assembling units on a free pipe. It should be remembered that, between the flanges, the distance should allow bolts to be tightened and the bolt to be mounted, but the tightness must remain. In this case, the pressure at 12 atmospheres will pass freely, the system will not test the voltage, breakages and leaks are not formed. When assembling polyethylene pipes for hot water supply, the following rules established by specialists should be observed:
- the depth of the system laying should not be lower than no more than 20 cm of soil freezing depth in the region( for each one should be recognized individually);
- if welding of HDPE pipes is carried out on a trench, the width of its bottom should be at least 40 cm larger than the diameter of the water conduit. Such a factor is necessary if there is a cushion of sand under the trench, and it has a thickness of 10 to 15 cm;
- when the polyethylene water pipe is laid, then the trench must be covered back, first attention is paid to the sand( the layer is up to 30 cm above the pipe level), and then the remaining soil is poured. In places where the road will pass through the waterway, the sand must be compacted, with each layer.
