HDPE pipe: installation with your own hands, especially installation and user manual

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2020-04-11 00:20:16

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Polyethylene pipes are universal thanks to the excellent characteristics of the material. More and more applications in everyday life finds pipe HDPE. Installation can be done with your hands, if you do everything by the rules. This does not require a special qualification. HDPE pipe installation

Material Characteristics

A Great demand for HDPE pipes caused by high quality material

  • Temperature range - from -500C to 600C;
  • Resistance to acidic and alkaline environments;
  • High elasticity and durability;
  • Low thermal conductivity;
  • Polyethylene is not a conductor of electric current.

Using pipes

In the house or in the country of HDPE pipe are made:

  • Sewers and drainage;
  • Water;
  • Gas supply to the house;
  • Cable channel for electrical wiring.

Range of pipes

For the drinking water to acquire pipes with a diameter of not more than 60 mm with a wall thickness of 4 mm. They should be designed for a working pressure of fluid in the system is not lower than 1MPa. Advantage is no corrosion and the metallic taste of the water. If you want to arrange a hot water supply, it is necessary to know that at a temperature of 800With the polyethylene is softened, and at its further increase begins to melt. In this regard, you should choose the brand not lower than PE80. Hot water pipes can also be fitted with a PE-RT or PN20, they can withstand heating up to 1100C. For conditions that is enough.

We Must distinguish between pipes for water supply and pressure. For normal operating conditions of the water are the Bay of 25 m length with a wall thickness of at least 2 mm. If the main artery runs under good pressure and has a diameter more than 25 mm, the drainage is taken inch pipe. In any case, a recusation shall be smaller cross-section than the General water supply.

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Methods of joining HDPE pipe

Before installation, select the connection method, which can be as follows:

  1. All-in-one - electrofusion or butt welding. The connection is the same strength as the pipe.
  2. Detachable way socket, compression and flange connections. Such pipeline systems are easily assembled and disassembled, you can repair or installation in tight spaces. Connections are made with fittings.

The connection Method is selected depending on the following factors:

  • Diameters of pipes;
  • Operating mode: gravity, pressure, cabling;
  • The use of rebar of different materials and with different diameters;
  • Accessibility of the site;
  • Having welding equipment.

Most durable work welded and flanged connections. Threaded coupling with seal resistant to stress. Installation of HDPE pipes for water supply with compression fittings is usually done on private land for watering systems of plants.installation of HDPE pipes for water supply

The weakest connection socket. They are used only in non-pressure pipelines except in those cases where the connection is welded.

Compression fittings for HDPE pipe: installation

For the HDPE pipes are mainly used plastic fittings, but there are also stronger versions of steel, cast iron, copper and brass. They differ in design and can be welded, threaded, press-connection. For plastic pipes are predominantly used compression fittings where the fixing clamp is a split ring of solid plastic material with notches, and the sealing - tightness of the sealing rings.fittings for HDPE pipe fitting

As well As other connecting devices, compression fittings come in several forms:

  • Coupler - for joining pipes of equal diameter and direction;
  • Go - to bond the pipe ends, the diameters are different (possible transition "tha");
  • Tap, angle - rotate construction for 45-1200;
  • Tee, cross for branch creation;
  • Fitting device for connection of pipe with hose;
  • Plug - for sealing the pipe ends.

Before the water-pipe must first draw his pattern with all the fittings and valves. Flattened tube tends to curl, so it is attached with clamps or pressed in straight 2 days.

If you have chosen to install the HDPE pipe, installation often done with compression fittings.

  1. The Pipe is trimmed to the desired size with a special tool. You can use an ordinary hacksaw, but the end of it is smooth and cleaned of burrs.
  2. Hole is aligned with the calibrator, because of its oval form is unacceptable. At the end is outer chamfer.
  3. The fitting Body connects gently with the pipe so as not to damage the rubber seals. Planting will be easier if you moisten the connection.
  4. Hands tightened nut. You can use the key to provide the required density of connections.
  5. For the second tube, the procedure is repeated.

Connections compression fittings are convenient to use when the installation of HDPE pipes in the country. The system is easy to assemble in the spring on the site and in the fall removed.installation of HDPE pipes in the country

Plug-in connections in remote places are made.It is convenient to apply Electrometry with a built-in heater. The fitting connects 2 tubes, then turn on his heating and welding takes place with the formation of a permanent knot. Price of the device is high, but the method is effective and often used.

Despite the possibility of dismantling the compression fittings you should replace the rubber seals when re-installing. This will ensure high reliability design.

Flange joint

When installing the HDPE pipe, installation for diameter more than 40 mm should be preferably done by means of metal flanges. To do this, the edges of pipes cut with a pipe cutter at a right angle at the finished layout. Then welded polyethylene sleeve with collars, and they set flanges of metal. Another way is to mount the compression tube flange to lock the smooth polymeric portion of the joint. Then installed a conventional flange which is secured by studs and bolts with the same part that is installed on the end of the steel pipe.

Flange connection allows you to connect valves, regulators, valves and tubes among themselves.

Weld

In the same way as metal, can be welded HDPE pipe. Installation with your own hands produce with the help of special equipment with electric heating of the junction.

  1. Cleaned up the joints and preparing the welding equipment.
  2. Set the welding parameters.
  3. The Pipes are fixed in the clamps of the welding machine and centered. The ends are mechanically processed.
  4. Between the installed pipe heaters, by which the edges upravlyaut.
  5. The Ends are reduced under pressure, which is maintained to cool.
  6. Tubes are extracted from the clips.

HDPE pipe installation with your own hands

The Cost of installation of HDPE pipe by welding depends on the diameter, but to a value of 63 mm price is usually the same and is around 200 RUB over the joint.

When applying electric coupler installation costs are the same as when butt welding, but it's more expensive. In the end the cost is much better.the cost of installing HDPE pipe

Hydraulic tests

The Efficiency of the harvested water is tested by filling with water for 2 hours. The system then raises the pressure and maintain it for 30 min. Tubing inspect for leaks.

In the operation process, the system status is constantly monitored. With proper Assembly, it will operate long enough.

Error during installation of HDPE pipe

  1. It is Important to consider the linear expansion of the pipes from the action of temperature. If to forget about it, inside the tubes the voltage is higher than normal, which reduces their lifetime.
  2. Too much distance between fasteners causes a slack in the tubing that leads to its premature failure.
  3. Tubes are cemented only with insulation.
  4. Below the surface condensation, the pipelines supplying warm or cold water isolates.
  5. When mounting the fitting is disassembled, to pipe up to the stop entered. If not remove the nut to the end, and then with a force push in the connector pipe, it can enter deep enough. When the installation of HDPE pipes with their hands in the country for irrigation systems, leakage is not so dangerous, but for home plumbing, it is unacceptable. Regardless of the consequences in both cases it is necessary to create a tight connection.
  6. Over-tightening the adapter leads to their destruction or slipping of the spacers from the installation.

installation of HDPE pipes with their hands in the country

Conclusion

When installing the HDPE pipe, installation is done mainly by welding or compression fittings. If the rules for installation connections will be airtight and durable for many years.


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Alin Trodden - author of the article, editor
"Hi, I'm Alin Trodden. I write texts, read books, and look for impressions. And I'm not bad at telling you about it. I am always happy to participate in interesting projects."

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