Low pressure polyethylene pipe fittings are an indispensable element in professional work connected with the installation of a pipeline for heating or water supply. They are a transition to a threaded connection. The fittings are quite versatile and work well when using PE, steel or other pipe. Choosing a quality product, you guarantee the protection of the pipeline from leaks, as well as other similar problems. The company offers products of such brands: ITAP, Tiemme, Unidelta.

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Tee crimp TIEMME 40 is a necessary element used to connect polyethylene and PEX pipes of the same diameter when installing cold and hot water supply systems, heating in residential, administrative, industrial buildings, when laying technological pipelines, pneumatic pipelines, transporting substances to which polypropylene is chemically resistant. Tee connection type - crimp. Tee material crimp TIEMME 40 - brass CW617N (zinc washout resistant). Operating conditions of the tee crimp TIEMME 40: working pressure up to 30 bar, maximum working temperature +110 degrees Celsius, working medium - non-aggressive liquids such as hot and cold water, oils, compressed air etc. Compression connection does not require any additional devices for installation, except for a wrench.

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Tee crimp-H TIEMME 25х3 / 4 "x25 is a necessary element used in the transition from the crimp part to threaded connection polyethylene and PEX pipes when installing cold and hot water supply systems, heating in residential, administrative, industrial buildings, when laying technological pipelines, pneumatic pipelines transporting substances to which polypropylene is chemically resistant. Tee connection type crimp-H TIEMME 25х3 / 4 "x25 - crimp and external thread. Tee material crimp-H TIEMME 25х3 / 4" x25 - brass CW617N (resistant to dezincification). Operating conditions of the tee crimp-H TIEMME 25х3 / 4 "х25: working pressure up to 30 bar, maximum working temperature +110 degrees Celsius, working medium - non-aggressive liquids such as hot and cold water, oils, compressed air, etc.

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Tee crimp-H TIEMME 40x1 "1 / 4x40

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Tee crimp-H TIEMME 40x1 "1 / 4x40 is a necessary element used in the transition from the crimp to the threaded connection of polyethylene and PEX pipes when installing cold and hot water supply systems, heating in residential, administrative, industrial buildings, when laying technological pipelines, of pneumatic lines, transporting substances to which polypropylene is chemically resistant. Tee connection type crimp-H TIEMME 40x1 "1 / 4x40 - crimp and external thread. Tee material crimp-H TIEMME 40x1 "1 / 4x40 - brass CW617N (resistant to dezincification). Operating conditions of the tee crimp-H TIEMME 40x1" 1 / 4x40: working pressure up to 30 bar, maximum operating temperature +110 degrees Celsius, operating environment - non-aggressive liquids such as hot and cold water, oils, compressed air, etc.

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Tee crimp-H TIEMME 50x1 "1 / 2x50

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Tee crimp-H TIEMME 50x1 "1 / 2x50 is a necessary element used in the transition from the crimp to the threaded connection of polyethylene and PEX pipes when installing cold and hot water supply systems, heating in residential, administrative, industrial buildings, when laying technological pipelines, of pneumatic lines, transporting substances to which polypropylene is chemically resistant. Tee connection type crimp-H TIEMME 50x1 "1 / 2x50 - crimp and external thread. Tee material crimp-H TIEMME 50x1 "1 / 2x50 - brass CW617N (resistant to zinc washout). Operating conditions of the tee crimp-H TIEMME 50x1" 1 / 2x50: operating pressure up to 30 bar, maximum operating temperature +110 degrees Celsius, operating environment - non-aggressive liquids such as hot and cold water, oils, compressed air, etc.

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Tee crimp-H TIEMME 63x2 "x63 is a necessary element used in the transition from the crimp to the threaded connection of polyethylene and PEX pipes when installing cold and hot water supply systems, heating in residential, administrative, industrial buildings, when laying technological pipelines, pneumatic pipelines, transporting substances to which polypropylene is chemically resistant. Tee connection type crimp-H TIEMME 63x2 "x63-crimp and external thread. Tee material crimp-H TIEMME 63x2 "x63 - brass CW617N (resistant to zinc washout). Operating conditions of the tee crimp-H TIEMME 63x2" x63: working pressure up to 30 bar, maximum operating temperature +110 degrees Celsius, working medium - non-aggressive liquids , such as hot and cold water, oils, compressed air, etc.

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Tee crimp-B TIEMME 25x3 / 4 "x25 is a necessary element used in the transition from the crimp to the threaded connection of polyethylene and PEX pipes when installing cold and hot water supply systems, heating in residential, administrative, industrial buildings, when laying technological pipelines, of pneumatic lines, transporting substances to which polypropylene is chemically resistant. Tee connection type crimp-B TIEMME 25x3 / 4 "x25 - crimp and internal thread... Tee material crimp-B TIEMME 25х3 / 4 "x25 - brass CW617N (resistant to dezincification). Operating conditions of the tee crimp-B TIEMME 25х3 / 4" x25: working pressure up to 30 bar, maximum operating temperature +110 degrees Celsius, working environment - non-aggressive liquids such as hot and cold water, oils, compressed air, etc.

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Tee crimp-B TIEMME 63x2 "x63 is a necessary element used in the transition from the crimp to the threaded connection of polyethylene and PEX pipes when installing cold and hot water supply systems, heating systems in residential, administrative, industrial buildings, when laying technological pipelines, pneumatic pipelines, transporting substances to which polypropylene is chemically resistant. Tee connection type crimp-B TIEMME 63x2 "x63 - crimp and internal thread. Tee material crimp-B TIEMME 63x2 "x63 - brass CW617N (resistant to zinc washout). Operating conditions of crimp-B TIEMME 63x2" x63: working pressure up to 30 bar, maximum operating temperature +110 degrees Celsius, working medium - non-aggressive liquids , such as hot and cold water, oils, compressed air, etc.

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The elongated crimp sleeve TIEMME 63 is a necessary element used to connect polyethylene and PEX pipes of the same diameter when installing cold and hot water supply systems, heating in residential, administrative, industrial buildings, when laying process pipelines, pneumatic pipelines transporting substances to which polypropylene is chemically resistant ... Coupling connection type - crimp.

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Connecting elements can be classified according to a number of characteristics:

1. Purpose of application

• connection of pipes with equal diameter;
• joining pipes with different diameters;
• creation of branch pipelines;
• pipe turning device;
• for installation in a single pipe system with various fittings;

2. Installation method:

• compression;
• welded;
• electrowelded;

3. Hardness:

• rigid - exclude any possibility of pipe movement;
• flexible - slight longitudinal movement of pipes and rotation by a small angle are allowed. In this case, all created connections are not violated and remain unchanged;

4. Connectivity:

• detachable - allow you to create durable and sealed connections, which at the same time can be disassembled if necessary, for example, for repair, reconstruction and change of the pipeline route;
• one-piece - as a rule, they are used to create pipe joints underground, in concrete, etc. This type of connection is as reliable as possible, but it does not allow disassembling the system into separate components.

Where to buy fittings at an affordable cost

Our catalog offers big choice connecting elements for HDPE pipes. Here you will find compression, cast, electrofusion fittings. We supply products directly from the manufacturer, which allows us to form attractive prices without additional markups and overpayments.

Pickup points in the cities of Moscow, Klimovsk and Novomoskovsk will allow you to pick up the goods at a convenient place. You can also order delivery in Moscow and the Moscow region.

Currently, when laying communication lines for various purposes often used low pressure polyethylene pipes (HDPE). Their installation is carried out using special fittings, which include Ball Valves... Next, we will consider what these products are, what they are and what their features are.

Polyethylene ball valve 25 - 25 mm

Features of HDPE ball valves

Plastic ball valves for HDPE pipes are shut-off valves designed to completely shut off the flow of fluid transported through the pipeline. They are called spherical for the reason that the locking mechanism is made in the form of a ball with a through hole.

The ball can be rotated 90 degrees in the housing to open or close the passage. The position of the locking mechanism is controlled by a lever. In taps large diameter(150 mm and more) the locking mechanism is controlled by an electric drive, pneumatic or hydraulic drive.

The body of these devices is made of HDPE, i.e. the same material as the pipeline itself. The locking mechanism is most often made by manufacturers from polypropylene or another type of plastic.

Advantages

The shut-off valves in question have many positive qualities, among which are:

• Durability - the product can last 25 years or more. Durability largely depends on the operating conditions of the product.
• Reliability due to the simplicity of the design.
• Low price due to the cheapness of materials.
• Low weight of products.
• High degree of tightness.
• Due to the fact that the device is made of plastic, it does not corrode, and besides, there is practically no sediment deposition on it.

Flaws

For objectivity, we will also present some of the disadvantages of the devices under consideration:

• Cannot be used to regulate the flow, as in this case they quickly fail.
• Like other HDPE fittings, they are designed for lower pressure than metal fittings.
• As the temperature rises, the strength of the device decreases.

Note!
Before using a plastic ball valve for HDPE pipes, you must make sure that its characteristics correspond to the conditions in which it will be used.

Types of valves for HDPE

In addition to the fact that the devices in question differ in diameter, they can also be designed to different ways installation:

• Collet (compression);
• Flanged;
• Welded.

Below we will take a closer look at the features of each type of device.

Collet

These devices are used for pipelines of small diameter - 20 mm - 110 mm. Their main feature is ease of installation, which can be done by hand without using special equipment, and not possessing the skills of such work.

Note!
For high-quality installation crane using a collet method, it is necessary to strictly perpendicular to their axis and chamfer a few millimeters, as shown in the diagram above.

As a rule, this shut-off valve is used in water supply systems. household use... Below are the main characteristics of these devices:

Specifications may vary slightly depending on the device model. However, in general they correspond to the data from the table.

It must be said that compression valves can have either the same dimensions of the inlet and outlet pipe, for example, 32 - 32 mm, or different, i.e. can serve as adapters between pipes of different diameters.

In the photo - flanged polyethylene valve

Flanged

Flanged HDPE ball valves are used for large diameter pipelines (up to 315 mm). They are bolted to the pipeline using flanges. As a collet, this connection is collapsible.

In contrast to devices of the previous type, flanged shut-off valves are able to withstand higher pressure. Often these valves are used in the chemical industry, as they are resistant to acids and alkalis, and are not subject to corrosion.

Welded

This connection method is used in cases where it is necessary to ensure tightness. Installation instructions in this case are more complicated.

Welding can be done in two ways:

• Butt- with the help of a special welding machine, which melts the ends of the two parts to be welded. Subsequently, the parts are docked under pressure.
• Electrofusion method- heating of the surfaces of the parts to be joined in this case is carried out with the help of shaped parts through which the metal spiral passes. As a result, the parts to be connected and the electrofusion joint are welded together, providing a reliable connection.

Here are, perhaps, all types of polyethylene ball valves.

Conclusion

Polyethylene ball valves are reliable shut-off valves used for different types pipelines from HDPE pipes. As we found out, depending on the purpose of the line and its diameter, they can be mounted in different ways.

From the video in this article, you can pick up some Additional information on this topic.

Due to the wide popularity of various types polyethylene pipes there is an increasing demand for connecting elements called fittings. HDPE pipe fittings allow for easy installation and in a short time. At the moment, many different compounds are produced by enterprises. Fittings for HDPE pipes are made of various types of polyethylene, copper or brass.

Fittings for HDPE pipes are used:

• For connecting pipes with the same diameter.
• For joining pipes with different diameters.
• For arranging the branches provided for by the pipeline diagram.
• For mounting pipe bends.
• For installing a plug on a PE pipe.
• For connecting pipes with different fittings.

The joints of PE pipes must be:

• Reliable.
• Durable.
• Waterproof.
• Resistant to possible effects of chemical elements.

Fittings classification

Professional pipeline installers distinguish between HDPE pipe fittings by:

• Installation method: compression, welded, electrowelded.
• Stiffnesses: flexible and rigid.
• Connectors: detachable and one-piece.

There is another classification of connecting elements:

• Straight lines used for joining HDPE pipes of the same diameter.
• Reducing, used when connecting pipes of different diameters.

Let us examine in more detail the first classification of fittings.

Fittings for various ways of connecting pipes

Depending on the chosen method of pipeline installation, there are:

• welded fittings;
• electrowelded connecting elements;
• compression fittings.

Welded fittings

Welded fittings can be manufactured in two ways:

1. by the method of ebb, occurring under high pressure(cast fittings);

1. butt welding of small pipe sections (welded fittings).

Welded fittings are available in diameters from 63 mm to 315 mm.

This type of fittings is designed for connecting pipes by welding. The low cost of welded fittings leads to a wide range of applications. Almost all branches and plugs provided for by the pipeline design can be made with welded connecting elements.

Most often, welded fittings are used during installation gas pipelines and systems in which the temperature of the transported liquid does not exceed 40 ° C.

Electrofusion fittings

Electrofusion or thermistor fittings are used for the installation of a pipeline structure in hard-to-reach places, that is, where it is impossible to carry out conventional butt welding.

Equipped with a heating wire located on the connecting parts. Under the influence of temperature, these spirals heat up and melt the polyethylene pipe. After cooling, a strong weld is obtained.

Compression fittings

Compression fittings for HDPE pipes are designed to connect pipes without the use of welding. With the help of such butt elements, a detachable connection is obtained.

Fittings of this type consist of:

• polyethylene body;
• O-rings located at the joints;
• clamping rings that protect connections from mechanical damage;
• bushings pressing the pipe;
• caps-nuts, reliably covering the docking place.

Produced from various materials... The diameter of the connections varies from 16 mm to 110 mm.

Features of installation with compression fittings

To properly connect pipes or make the necessary branches compression fittings follow the instructions below:

1. The HDPE pipe is being prepared and the compression fittings are unscrewed by several turns.
2. A marking is applied to the pipe indicating the depth to which the pipe must be inserted into the fitting. Before installation, it is advisable to lubricate the pipe section intended for joining with water or a light soapy solution.
3. Up to the drawn mark, the pipe is inserted into the prepared fitting. For full entry of the PE pipe into the O-ring, force will be required. IN otherwise the connection will not be airtight.
4. The nut cover is tightened to the end of the thread.

At correct installation compression fittings get a sufficiently strong and tight connection.

Splitting fittings by connection stiffness

According to the degree of rigidity, fittings are distinguished:

• Tough. Such connections completely exclude the possibility of pipe movement.

• Flexible, in which the longitudinal movement of pipes by 3 - 5 mm and the rotation of pipes at a small angle are allowed. When using a flexible fitting, all the properties necessary for the connection are retained unchanged.

Flexible joints are most suitable for buried pipelines, but are also more costly. Therefore, they are used only when absolutely necessary.

For the installation of the simplest piping systems, rigid fittings are often used.

Types of fittings distinguished by detachable connections

When installing the pipeline, both detachable and one-piece connections may be required. This is due to the location of the pipe joint and its application. For example, HDPE pipes for water supply: fittings at the first stage of installation are used to connect the pipeline with pumping station... At some point in time, it may be necessary to replace the pump and the detachable connection will simplify the necessary work as much as possible.

Detachable connections

In most cases, installation is carried out with the compression fittings described above. But there are other ways to arrange such a junction:

• Flange connection. A cast or brass flange is welded to the pipe. This type of connection is mainly used for large-diameter pipes or for joining a polyethylene pipe with a metal one.
• Threaded connection. Fastening of pipes is carried out using threads prepared in advance on pipes and fittings. Considered the least reliable. It can be used for laying cable pipelines or systems with low fluid pressure.
• Socket connection. It is used extremely rarely. It is carried out by fixing one end of the pipe in the extension of the fitting or the other end of the pipe. Most often used for laying pipelines for cables.

For detachable connections, brass fittings for HDPE pipes can be used.

Non-detachable connections

Permanent joints are most often used to connect structures that are underground or in concrete, since this type is considered the most reliable. Welding of pipes can be carried out in the following ways:

• Butt. The most common way of joining pipes of the same diameter;
• Socket welding. For this method of joining pipes, fittings with an inner diameter equal to the same parameter of the pipe are used.
• Press or edge welding. It is used for joining pipes with structures, for example, wells.
• Electrofusion welding. It is carried out using electrofusion couplings and is considered the most reliable connection method.

Cast and electrofusion fittings are used to equip the permanent connection.

Fittings types

All fittings differ in their design features and, accordingly, the scope. Depending on this, fittings can be divided into:

• Couplings, which are of three main types:
  • Equal, connecting pipes with the same diameter.
  • Compensating, mainly used for switching to a pipe with a smaller diameter.
  • Flanged, used for joining pipes with a large diameter.
• Adapters. With their help, various fittings or another type of pipe, for example, metal, are connected to the pipeline.
• Taps. They are used to change the direction of pipes, turn the system. Standard elbows are available with 45º, 66º or 90º swivel. Some firms are engaged in the production of fittings according to customer specifications. If for the installation of the system, bends with a different degree measure of the angle are required, then such a fitting can always be ordered from the manufacturers.
• Saddles. Designed for arranging various branches. Saddle for HDPE pipe can be of two types:

• Clamps that crimp pipes from all sides.
• Liners used to cut a new pipeline into an existing system.

• Crossings and tees. They are used for the installation of pipeline branches and for connecting other devices to the network.
• Plugs. They are used to temporarily shut off the incoming liquid or gas into the pipe.

A certain type of fitting is intended for the installation of a certain pipeline structure.

Fittings are available to facilitate the assembly of polyethylene pipes. A correctly selected set of connecting elements will maximize the time required for the installation of the piping system and greatly facilitate the work of connecting the pipes.