Collet what it is: clamping connection of pipes, under the bell-shaped, according to the photo, types and methods of fitting, for plumbing

To connect the details of a sewer or water pipe, different types of elements are used. These include welding, fitting, coupling, thread. But grips are gaining more and more popularity. They will allow hermetically connecting the pipe and make a tap to the plumbing.

Types of plumbing pipes and fittings

Material for the manufacture of pipes is quite a lot. Each option has its own characteristics, advantages, disadvantages and recommendations for use. The main thing is to get acquainted with the basic information.

Types of pipes:

• Metal;
• Plastic
• Metal-plastic.

For the first option, steel, copper and stainless steel are most often used. Plastic pipes are represented by polymer, polypropylene and cross-linked polyethylene. Metal-plastic communications are a combination of plastic and metal.

Of all the options, metal-plastic is of great popularity. Among the advantages note the smoothness of the inner walls, corrosion resistance, easy installation, durability. The main drawback is the connection features.

Plastic is also widely used due to its corrosion resistance and smooth surface. Metal is a bit of a thing of the past. Despite all the strength, the material is prone to corrosion. At the same time, installation is quite difficult, because it requires only welding.

When using metal pipes, hidden installation is prohibited. The material is unstable to corrosion and can quickly become damaged.

Among the connections note detachable and one-piece. The choice of the best option depends on the material of the pipes and the installation method. So the collets should be constantly accessible to prevent leakage.

What are the fittings and collets?

To determine the principle of operation of the devices, you should first find out what are the collet and fitting. The name of the product comes from the nozzle that holds the drill tool. Collet is used to connect cylindrical parts. This is a metal product, on the side wall of which a special thread is made, performing several springing petals. Such fittings are often referred to as clamping.

Thanks to the petals, the collet presses on the inner wall of the pipe, pressing it against the walls of the product.

Fitting is a universal connection. It is widely used for different types of tubes. At the same time, the devices are very diverse. So mark direct fittings with different threads, angular, swivel, tee, adapter, double-sided and many others.

Fittings Features:

• Fastening the pipeline of different or the same diameter;
• Joints of angular parts;
• Pipeline connection with other plumbing.

The strength of a product is determined not only by a collet. The external mounting nut is also important. Thanks to this, the pipeline is hermetically connected, strong and reliable.

Advantages and disadvantages of a collet clamp for pipes

The use of collet-based clamps has gained popularity not so long ago. But now many specialists and professionals are widely using this product in various jobs. Unlike a conventional fitting, such a connector has many advantages.

Advantages of the collet connection:

• Affordable cost;
• Wide selection;
• Simple installation;
• Durability;
• Bond strength;
• It can be used several times.

The collet itself is inexpensive. In addition, for its installation does not need special expensive appliances or materials. At the same time, work on replacing the device will also not be very expensive.

The market offers a wide selection of collets of various sizes. In this case, the product can be purchased at any hardware store or in the market. Collets are available for various pipes and diameters, so picking up the necessary product is not difficult.

To install such fittings do not need special tools. Everyone can learn to work with a collet in a minimum period of time. And with proper installation, the connection will last a long time. At the same time, the collet connection is quite reliable and tight.

The cause of breakage of the collet may be mechanical stress or rusty pipes.

Unlike other connectors, the collet can be used several times. This simplifies pipeline repair work. So you can notice only a section of the pipeline without having to dismantle the entire system.

Among the disadvantages of the products, a gradual weakening of the compound is noted. As a result, the pipeline begins to leak. But to cope with such a problem is quite simple. You just need to tighten the collet.

But this minus obliges to establish such a connection in an accessible place. It is impossible to carry out hidden installation of pipes and hide communications. Tightening works are performed, as a rule, once a year.

Classification of pipe joining methods: welding features

Pipes, as well as connections, are many. You can find the best way for a specific situation. But in total, 2 main methods of pipe connections are shared.

Pipe connection methods:

1. One-piece. Such compounds include welding, gluing, sealing, the use of press fittings and other options.
2. Detachable. These include threads, collets, flanges, and others.

If necessary, plug-in devices can be disassembled and reassembled. This greatly simplifies repair work. And inseparable methods will not allow to return the original form to the disassembled pipeline.

Welding is used for different types of pipes. It allows you to create a tight connection. When working with metal pipes, high-temperature welding is used, and for plastic pipes, low-temperature welding is used. Welding includes melting and pressure method.

Before welding, the work surface must be degreased. To do this, use a solution of caustic soda with water. Also, surfaces are filed to level.

But welding does not always give the desired result. This method is not used often, although it guarantees a reliable and tight connection. An alternative to welding is the use of threaded joints, American, collets, crimp press fittings, fitting fittings, clamps, joints, high pressure hoses.

Using the collet: a quick guide

Collet joints are used for fastening metal-plastic pipes. The method, like the material, is new, but has already earned recognition. This method has even surpassed the use of crimp non-separable fittings.

Collet fitting diagram:

1. Collet. It is a metal tail with a rubber seal.
2. Crimp ring. Thanks to it, a tight connection is created when the product is tightened on the pipe.
3. Union nut. It is used to tighten the crimp ring.

Installation of such a device is quite simple. First cut the pipe with a cutter. Then put on the union nut and crimp ring. The pipe is pulled into the device until it stops. The crimp ring goes to the end of the pipe. Further, the union nut is tightened on the fitting.

O-rings made of rubber guarantee the necessary tightness of the connection. No need to additionally use tow or other sealants.

One of the advantages of the collet is the ability to disassemble it, but there are certain difficulties. O-rings are damaged during dismantling. That is why all installation work should be performed as correctly as possible in order to exclude subsequent repair work.

Certain types of collets are used for plastic products. The pipe is loaded into the body of the product, and then the crimp ring and the nut are tightened. This results in a tight joint.

The nuances of using a socketed pipe connection

The socket connection is distinguished by its simplicity. So the end face of one pipe has a larger size, where the necessary element is inserted. For sealing compounds use various kinds of seals.

Types of bell-shaped joints:

• Without o-ring;
• With o-ring;
• By welding.

The first option is characterized by maximum simplicity. To begin with, the materials are measured and prepared (sawn off, ground). Then the prepared pipe is inserted into the bell. The gap is sealed with a sealant. Compaction is due to oiled hemp or flax. Material pushes deeper. And the closest distance is treated with silicone sealant.

When using a sealing ring the necessary tightness is provided due to this rubber element. The ring is clamped between the walls of the pipe and the bell. It is important to monitor the alignment of centers.

The use of welding is possible only with special equipment. So use a mechanical or manual welding machine. The installation process is quite simple: the elements are heated and connected.

Tsang: what is it and why is it needed (video)

Different methods are used to connect plumbing and water pipelines: welding, fitting connections, collets, threaded fastening. The collet chuck is now particularly popular. Such clamps allow you to create a tight joint in short terms.

Collet examples (photo)