What is the difference between HDPE corrugation and PVC and which is better to choose?

In the modern world, new technologies and materials are becoming increasingly widespread, including in the laying of utility networks. Heavy and low-tech pipelines made of steel and cast iron are being replaced by polymer pipes that are lightweight and easy to install. Unlike metal networks, the polymer is not afraid of corrosion, is resistant to transported working media and has a relatively low weight, which is important for multi-story composite structures.

Polymer pipes are produced from two types of material - low-density polyethylene (aka HDPE - high-density polyethylene) and polyvinyl chloride. Each material has its own characteristics, and their purpose varies accordingly.

Rules for installing PVC pipes for electrical wiring with your own hands

Laying out an electrical network begins with a layout of sockets, automatic machines, lamps, switches, and connection points for stationary electrical equipment (stove, boiler, electric oven).
All power supply lines must run either vertically or horizontally, at a distance of 20 cm from the ceiling, floor, door, and distribution boxes must be installed at branching points. Regardless of the wiring installation method (behind a false wall, in grooves), there must be access to the boxes. Connecting wires is allowed only in junction boxes and under no circumstances inside the shell pipe.

When installing pipes for pouring into a screed or concrete wall, you must first securely secure the structure using metal clamps. When installing a pipeline in a groove in a brick wall, you can fix it with quick-setting plaster (alabaster) and then plaster it.

To install the pipe shell outdoors, metal clamps are used; inside the building, plastic clips are used.

During installation, any pipes must fit into the opening of boxes, sockets, switches; gaps between the box and the pipe are not allowed.

In damp rooms, outdoors and in the ground, sealed pipes are used for installing electrical wiring. At the joints of pipes and distribution boxes, special seals are used (you can additionally coat them with sealant, for example, silicone). When laying open communications in dry rooms, the use of seals is not necessary.

If the electrical wiring is installed near the heating system, then when crossing, the distance from the heating should be at least 5 cm, and if the pipes run parallel, then the distance should be at least 10 cm.

You cannot bend pipes with a small turning radius; when bending, you must comply with the standard radius and use a pipe bender or templates. There should be no cracks, folds, or creases at the bend site.

Required tools and materials

Tools required to perform work with corrugated hoses:

Grinder with cutting disc.
Hammer.
Drill and screwdriver.
Metal scissors.
Construction knife.

Materials:

Corrugated sleeve
Clips or clamps.
Dowels.
Distribution boxes, boxes for sockets and switches.
Electrical tape, scotch tape.
Sealing gaskets, sealant.
Perhaps a hard thin wire or a special broach.

Installation technology

The installation technology is quite simple:

Cut the pipes or corrugation into pieces of the required length; when cutting the corrugation, you must ensure that the probe does not go inside the pipe.
Securely attach the cable to the probe using tape or tape. The bent tip of the probe must be bitten off, otherwise when the cable is retracted it will damage the inner surface of the corrugation.
Pull the cable into the tube. If several wires are pulled in, you need to tape them together several times with electrical tape.
Mark the location of the cable in the casing and the places of fastenings.
If necessary, punch a hole, secure the tube using clamps, clips, or alabaster. Fasteners must be installed at intervals of at least 50 cm and always near the boxes, at a distance of no more than 20 cm. The system can only be filled after the pipelines have been securely fastened.
Mount boxes, tees, bends, connect to pipes, seal if necessary (install seals, lubricate with silicone).

Electrical installation in PVC pipes. Part 1.

Features of corrugated pipe installation

The corrugated pipe has very great flexibility - after installation it will sag slightly; it is necessary to frequently place clips or clamps. Do not tighten the corrugation too much during installation - this weakens its strength. When installing behind plasterboard or other facing materials, you cannot lay the corrugation obliquely - only vertically and horizontally. You can attach the corrugated hose to the frame structures for cladding. Do not lay corrugation through sharp corners on structures - it will quickly become damaged.

uPVC pipes (unplasticized polyvinyl chloride)

PVC began to be produced industrially back in 1931. During operation, this wonderful material was improved. The scope of its application has increased.

Of all polymers, uPVC is the most durable material, its elastic modulus is more than 3000 MPa.

In our country, uPVC has been used since the eighties of the twentieth century.

Currently, in Europe, well casing is made exclusively from uPVC; in our country, it began to be used for drilling private water wells in 1998; the implementation process was slow. The first wells using uPVC technology were made in 2011; to date, the condition of the wells is checked annually. Since the material has proven itself, such wells have been drilled en masse in the last 2-3 years.

Advantages of uPVC

Durability over 60 years;
The chemically inert material does not pollute the water supply and the surrounding environment;
Resistant to electrochemical corrosion;
High resistance to external pressure;
Cost is lower than steel;
Silences noise and vibration;
No external steel jig required;
Sockets at pipe joints provide high tightness and additional strength.

Disadvantages of uPVC

Sensitivity to frost below 15°C;
There is a limitation on the depth of use of such casing, no more than 120 meters;
It is not always possible to line a well with a uPVC pipe in the case of complex geology of the site.

Important: it is worth mentioning separately about the wall thickness of uPVC pipes used for drilling water wells: diameter 125 mm - wall from 7.5 mm, diameters 140 mm and 170 mm - from 8 mm. Beware of offers of thin-walled pipes with a stack of 5 - 6 mm

When assembling casing columns for an artesian well, the following are taken into account:

Drilling depth;
The need for the amount of water (determines the diameter);
Soil structure;
In-situ water pressure in a specific area. Many complications arise when water flows out of a well;
Groundwater height.

When looking for the best options, take advantage of the expertise in integrated water supply. The company's engineer always visits the site before work begins, and on site he will provide more detailed advice on the characteristics of the siege pipes, taking into account the characteristics of your area.

Order an engineer visit to draw up an autonomous water supply project by calling: (495) 649-8593

Detailed photo reports of projects completed by our specialists in the Moscow region. The final estimates and characteristics of the wells are given. Read more: more than 200 examples of our work

The quality of the arrangement of a personal source determines both its service life and the comfort of the entire system in the cottage. Read more: well construction

How often should the maintenance schedule be carried out for the autonomous water supply system in the house? List of necessary works. Read more: maintenance of the water supply system of a private house

Source

Where are PVC pipes used?

Using these products:

Water supply systems are installed;
Irrigation systems are being created;
Free-flow sewerage is being laid;
Storm drains are being installed.

PVC products come in two types: chlorinated and made from non-plasticized polyvinyl chloride.

The main advantage of the first type is the high melting point (more than +480 degrees Celsius). And thanks to the high mechanical strength, high-pressure pipelines are created from these products. Excellent resistance to aggressive media makes it possible to pump strong acids and other reagents through such systems. CPVC pipes are used when it is necessary to transport water, vegetable oil, juice or any other liquid food product.

uPVC products

Pipes made of non-plasticized plastic cope well with operating temperatures from 0 to +60 degrees Celsius, therefore they are suitable for transporting alkalis, acids and other aggressive liquids. They are safe for humans, so they also supply water.

No. 6. Manufacturers of corrugated pipes for electrical wiring

When purchasing corrugated pipes, it doesn’t hurt to inquire about the availability of quality certificates

This is not a mere formality, but an important security requirement. It doesn’t hurt to look at the name of the manufacturer, since large companies will not risk their reputation and produce products of inadequate quality

Among the largest manufacturers of corrugated pipes, whose products are presented in domestic stores, it is worth noting:

LLC "is a domestic enterprise that produces and sells a wide range of materials for electrical wiring, incl. produces corrugated pipe. The range includes products made from PVC, HDPE and PP, light and heavy pipes, with and without a probe, of different diameters. Production is standardized according to ISO 9001, and products meet all European requirements;
JSC "RUVINIL" is one of the largest Russian manufacturers of electrical products. Since 1998, the company has mastered the production of a huge range of products, using modern technologies and high-quality raw materials. The company produces corrugated pipes from PVC, HDPE and LDPE with a diameter of 16 to 63 mm;
is another fairly large domestic company that produces a solid range of electrical installation products. Corrugated pipes here are made only from PVC, diameter from 16 to 55 mm, there are products with and without a probe, light and heavy;
Delta LLC produces products under the EnergoPlast brand. The assortment includes PVC and HDPE pipes, light and heavy, with and without a probe;
Tyumen Corrugated Pipe Plant produces PVC pipes of various diameters;
NASHORN is a company that today is called one of the largest manufacturers of plastic pipes. For installation of electrical wiring, they only produce corrugated pipe made of PVC; the range is not very large.

Connection of PVC and HDPE pipes

The coincidence of standard sizes indicates that the connection of PVC and HDPE pipes is possible. Moreover, in many cases it is inevitable. For example, at connection points for indoor and outdoor sewerage networks. In addition to the production of pipes, GOSTs also provide for the production of standardized fittings and fittings for connecting parts of pipelines in different ways.

Answers to the question of how to connect a HDPE pipe to a PVC pipe immediately exclude two options - welding and adhesive connection. This is due to the physical properties of the materials. This situation is called incompatibility. Therefore, to connect parts of pipelines made of HDPE and PVC pipes, other methods provided for this case are used:

for non-pressure pipelines - sockets for sealing rings;
for pressure pipelines - fittings with mechanical fixation.

Both connection methods fully comply with the operating pressure for which the corresponding types of pipelines are designed, guaranteeing the tightness of the system as a whole. When connecting pipes made of the same types and brands of polymer materials, you can use all the methods presented in the table above. However, situations when you have to connect HDPE and PVC pipes do not happen often.