Choose and install water pipes HDPE for cold water

To an autonomous water supply system worked "five", it needs high-quality components.

We have already mentioned how the self Abyssinian well doneOr what features to consider when choosing a private home water systems.

It was the turn FORUMHOUSE tell readers about what you need to know about the features of HDPE pipes.

HDPE pipe - how to choose

IPA - the most popular material for cold water input to the house (from the well, etc.). And yet, at the beginning developers have many questions in connection with its use:

• What is HDPE pipe;
• How to select it;
• How to distinguish a quality product from a fake;
• How durable HDPE pipes for cold water;
• What features to consider when installing.

Aleks286 (User FORUMHOUSE):

- Properly speaking PE (Polyethylene), and HDPE not, of course, provided that the pipes made according to GOST 18599-2001 "Pressure pipes made of polyethylene."

IPA - a raw material (low density polyethylene) from which articles are produced PE.

But like FORUMHOUSE users, we will adhere to the "people's" title.

It is the quality of the raw material service life of the pipeline depends on many things. And if in some cases the water main from PND is decades, in other cases, even well-mounted system starts to flow through 1-1.5 years.

The fact that many companies use in the production of HDPE pipes, plastic waste - the so-called "secondary housing." Moreover, the course is all even use disposable syringes. Durability and reliability of such products does not hold water. And the cold water of them has a sharp unpleasant chemical smell, which is not even erode over time.

Pls (User FORUMHOUSE):

- The easiest way to choose a quality HDPE pipes for drinking water supply - is to pay attention to her appearance.

Poor-quality product has a black or dark gray. It does not have alphanumeric markings. The alien material visible specks or streaks. If you smell the product, you can feel the unpleasant chemical smell. The walls had a different thickness (seen when viewed from the end).

HDPE construction, designed for drinking water - black with blue stripes or completely blue. Color her - homogeneous, the material itself is smooth, with no inclusions and stripes. The wall thickness corresponds to GOST. Mandatory labeling (wrought embossed or printer for labeling) - "Pipe drinking GOST 18599-2001". It should also be mentioned:

• Diameter;
• wall thickness;
• Manufacturer;
• The strength index of the material - is marked as follows: PE100 and PE80.

Banned (FORUMHOUSE User):

- I advise you to choose the products, which suffered GOST, is marked manufacturer and listed yardage.

Aleks286 (User FORUMHOUSE):

- In accordance with GOST 18599-2001, under which make pipes for water supply, presence or absence of blue bands on the HDPE pipe still does not mean that it is intended for drinking water or not.

Some unscrupulous manufacturers can apply blue stripes on poor quality or intended for technical purposes HDPE pipe. Therefore, in the first place, it is necessary to see what is written on the product!

Tap pipe according to GOST 18599-2001 done only from the low density polyethylene without the addition of recycled materials.

It is also necessary to pay attention to the price - compare the price tag from several manufacturers. The price is much lower than the maximum, and even the average market should be alert, because to sell at a loss does not become a manufacturer.

As Smonitrovannoe compound 

It is not enough to choose a quality product, you need to properly lay the pipeline and install reliable connection. Most often, HDPE water connections are doing on the collet fittings.

Because in the flow of the compression fittings are no metal parts, it increases the corrosion resistance of the pipeline system of this material.

When mounted on collet fittings necessary to consider some features.

KVladimir (User FORUMHOUSE):

- Collect system. Despite the use of fum-tape and decent puff, some HDPE fittings are leaking.

When installing the collet fitting should not be used "for more reliability" Linen, hemp or fum-tape.

Benya (User FORUMHOUSE):

- Push-in fittings are tightened simply by hand and everything.

The longer the fitting, the more it is necessary to make a turn to its pinch. Pipes are inserted into the fitting against the stopAnd not to seal gum.

Sometimes you can hear the opinion that, if paving HDPE pipes on the ground that it did not happen, but it is not.

Zavlab (User FORUMHOUSE):

- HDPE products are unstable to sunlight. According to GOST they are allowed to keep the sun at most two months. And it is in perfect conditions, when the manufacturer in full compliance with the technology and uses a polyethylene pipe.

Therefore, the line of HDPE are best to dig into the ground. And to make it better at depth below the soil freezing, it will not freeze fittings.

Quality HDPE pipe withstands freezing and thawing cycles without failure, but for fittings freezing disastrous.

The very process of installation is as follows:

1. Dig narrow trench depth of 2 meters.

2. Stones from the trench are removed, otherwise they can push the product wall.

3. Stack pipe (not interference!) And sprinkle it with sand.

4. If necessary, water is further insulated.

5. The trench is completely buried.

wk96 (User FORUMHOUSE):

- Mechanical fittings with collet designed to be installed in an accessible place for visual inspection.

Collet compound must be periodically inspected for leaks, and if necessary, retightened.

Therefore when instilled Fittings under the ground falls sharply maintainability of the whole system.

Tehnik-san (User FORUMHOUSE):

- Use the "underground" connections HDPE fittings for welding into the socket. The process is similar to the soldering connections IPA polypropylene. Monolithic solder connection without threads.

Welding in one conduit can only pipes and fittings of the type used for this soldering iron for soldering PP-RC.

Technology such welding is as follows:

1. The tube is cut perpendicular to the longitudinal axis, all the elements degreased with isopropyl or isobutyl alcohol (used in nezamerzayku).

2. The apparatus include temperature switch exhibit a predetermined temperature - 200-260 ° C. Important not to overheat the thin-walled pipe, since HDPE melting temperature lower than that of PP. Welding mirror mounted steam nozzle.

3. Simultaneously, the fitting is slid onto the heated nozzle and the tube is moved into the coupling nozzle. Approximate heating time for the products of different diameters is written in the manual soldering instructions.

4. By heating the end parts are removed from the nozzles, combined and fixed. The tube is fixed in the fitting 10 to 50 seconds. This is necessary in order to because an elevated pressure in the weld due to thermal expansion, it is not pushed out of the fitting. During this operation, it prohibited mutually move the fitting and the pipe.

5. Details cooled. Only after complete cooling connection is mounted in place, and the load is applied to it.

You can also use the following procedure: - to conduct the installation of threaded fittings at the Demolition hard anaerobic sealant. Advertisement such connection is possible only after a very strong heating.

banned (User FORUMHOUSE):

- When connecting the three push-in connection, I missed gum silicone sealant and buried. It's been 10 years, nothing flows.

You can not dig a trench in the sewers and running water!

Of HDPE pipe diameter selected

Also forumchane advised to do input HDPE pipe in a house or a country house through the sleeve - of larger diameter HDPE pipe (50mm) than for plumbing pipe. Under the sleeve can take more deshovoee HDPE product intended for the supply of industrial water, and have it to lend backbone to supply drinking water. In this case, if necessary, repair of highways, HDPE pipe with cold water (diameter 32 mm) can be replaced without digging the trench.

When laying the aqueduct of IPA to consider the minimum permissible bending radii, which depend on the outer diameter of the pipe. For clarity, you can use the following table:

SDR - the ratio of the outer diameter of the pipe to the thickness of its wall.

The smaller the value of the characteristic SDR, the pipe wall thickness and the more it will withstand the internal pressure of the water.

If we ignore this data, when trying to bend the pipe in excess IPA said special specifications, it can be folded in half.

you can learn all about FORUMHOUSE HDPE water pipe. We also have the full information about the systems elements plumbing and heating. Here you can find out why the flow fitting in metal structures and see a master class in a submersible pump assembly. And a look at our video topics, you will learn all the secrets of the installation apartment water.

Discuss the article and read other materials devoted to country life you can on the websiteFORUMHOUSE.

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