Corner conical American. Types of plumbing American

An American, whose correct name is a union nut, is a connection of pipes using a fitting. She received such an unusual definition in everyday life from plumbers. This is a fitting that is designed and manufactured in the USA and is designed for quick installation and disconnection of structures in water and gas pipeline systems without rotating the pipe.

Such a connection has found wide application in plumbing, because only one union nut is needed to join pipes. They make parts from cast iron, stainless steel, brass with chromium and nickel content, as well as some types of propylene parts and stainless steel.

Ways to install an American

The method of joining pipes, during installation, using a union nut is universal. Such a unit is suitable for polypropylene and steel, cast iron, copper and metal-plastic products. It is used in hard-to-reach, inconvenient places where welding is not possible. The simplest form of this element consists of the following details:

Threaded fitting;
Pad;
Cap nut.

Thanks to the conical surfaces of the parts, as well as the rubber gasket, the fitting has a tight fit.

The union nut has two types of installation:

conical;
Threaded.

The conical connection makes it possible to quickly carry out the installation of parts in hard-to-reach places without the use of special tools. In this case, the docking will be tight and reliable.

A threaded connection is used when instant installation or dismantling of pipes is necessary.

Threaded connection is of the following types:

Detachable with external thread (with its help, polypropylene and steel pipes are installed);
Detachable with internal thread (also suitable for polypropylene and steel pipes);
Detachable with union nut.

The detachable connection ensures the straightness of the connected pipe sections. The quick connector is necessary for the fast connector of the pipes. The speed of work lies in the fact that undocking occurs with just a union nut. An important advantage of the American is that the fitting can be disassembled many times during the operation of the pipeline, only the replacement of the seal is needed. This makes it possible to save time and money.

In what cases is it used

With the use of a quick-release nut, American plumbing becomes much stronger and more reliable. When carrying out plumbing work, it is impossible to do without such an installation. With the help of this part, installation and repair work of heating radiators, meters, filters, plumbing, all types of pipes are carried out. It is especially noteworthy that the above work is carried out with just a union nut, which is controlled by a simple open-end or adjustable wrench.

Today, a ball valve has become an indispensable part in plumbing, because it has a very successful design. It is a modern and progressive type of pipeline crane, in which the working element has a spherical (spherical) shape. Such an element is used to pass water, gas, steam.

It is made from steel, cast iron, brass, copper.

An American connection can be:

Direct;
Angular.

There are different sizes of crane, depending on the nature of the work. The most popular sizes are 12 and 34.

When installing plumbing equipment, the faucet replaces the previously used conventional shackle, which consists of a long thread, a coupling, a lock nut and a counter thread.

Plumbers had to make a lot of work during the work. Now it is only necessary with a few turns of the key to pull off two self-centering parts - a crane and an American.

The ball valve is widely used in the installation of the heating system. The radiator, mounted through a faucet, is easy and simple to remove, plus the water supply can be adjusted manually. It has two types of handles:

Butterfly;
Lever arm.

The butterfly is mounted on nodes of small section, and the lever on nodes of large section.

Today, plumbing offers customers a wide range of exquisite products - from retro to stylish avant-garde. Global manufacturers put all their skills to meet customer needs at an affordable price. In order for such plumbing to serve for many years and please the eye, it is necessary to use such a detail as an American for faucets and sinks.

The American connection is the best, most reliable and versatile way, which is indispensable when carrying out plumbing work.

The quick-release threaded American is available with a flat or conical connection of structural parts. Usually, the simplest American consists of four parts: two threaded fittings, a gasket (but not always) and a union nut.
Tightness between fittings occurs due to the conical surfaces of the edges of the parts and a rubber gasket, or for flat ones - only a gasket, for example, paronite.

Americans are designed for convenient quick connection or disconnection of pipes and various shut-off and control elements of heating and plumbing systems in the house. Connection (connector) of pipelines is carried out due to only one union nut. Please note that the American detachable connection in plumbing is designed for repeated use with the replacement, if necessary, of the “squeezed out” gasket and has an undeniable advantage over the usual squeegee with a coupling and a lock nut.
Such connections come with a socket threaded connection (Photo 1)

or for soldering polypropylene pipes (Photo 4).

Americans for plumbing are made from different materials: cast iron (Photo 3),

brass plated with chrome or nickel (and without),

stainless steel and combined, with individual polypropylene parts. They can be bought in the distribution network of various sizes (diameters) and designs (straight, angular (Photo 2),

designed for different pressures of the medium in the pipeline.

Widespread cranes with an American.

By design, an American ball valve can be straight or angled and is designed to work in a system of cold and hot non-aggressive environments.

Available in bore sizes 15 (1/2″), 20 (3/4″) … and up to 50 (2″). The temperature limit for a plastic tap is plus 90 degrees. And a ball valve with an American made of brass, for example, Bugatti (Bugatti) can withstand temperature conditions, according to the manufacturer, from minus 20 to plus 120 degrees.

In order to install or dismantle plug-in connections, you need a wrench for American women. In plumbing practice, more often you have to deal with American women 1/2 ″ and 3/4 ″, with two internal protrusions, less often for a hexagon. I make such a “L” shaped double-sided key myself, from cutting construction profile 14 fittings, using the method of heating and flattening to a square. Then I give a small conical shape and harden. It is made under a cone because different manufacturers have slightly different sizes of internal protrusions.

The universal mutual “L” shaped key for American women has the following approximate dimensions (diagram in Fig 1):

handle length 150 mm;
edge under 1/2 "- A \u003d 12, B \u003d 10, C \u003d 32;
edge under 3/4″ - A = 16, B = 13, C = 35

Such a homemade key is also suitable for detachable connections for a hexagon.

Tip: if you only need to work with one or two ... 1/2 ″ metal American women, you can use ordinary pliers, which will work quite well as a key (Photo 5).

American plumbers call a ready-made quick-release element for connecting 2 pipes.

For these purposes, a clutch with a drive was previously widely used.

A coupling is a piece of pipe with an internal thread or a wide nut. The coupling is used both for connecting pipes of the same diameter, and two pipes of different sizes. In the first case, it is called a coupling, in the second - a transitional one.

When mounting and adjusting the connection, it is often necessary to supplement the coupling with a drive. Squeegee is a piece of pipe with external threads at both ends.

Device

By its design, an American is a combined coupling, a collapsible part, consisting of 2 threaded fittings and a union nut.

The American is flat, in this case the tightness of the connection is achieved by a gasket. It is the cheapest and most compact.

During operation, it may be necessary to tighten the nut and replace the used gasket. For these reasons, it is better not to make connections with a gasket hidden.

Another option is a cone American.

Here, a gasket is not required, since the polished parts of the fittings, made like a cone, are tightly pressed against each other when the nut is tightened.

The deviation along the axis of the mounted pipes should not exceed 5 degrees. They should be carefully checked for hidden defects, as they are usually used in the most important connections.

Expert advice: for critical connections operating in conditions of temperature differences: water heaters, heated towel rails, use an American cone, it is more expensive, but more reliable.

American is a universal and convenient device on a single nut.

To connect pipes, simply tighten the union nut. Quick and convenient installation with the help of an American has replaced traditional couplings and shackles.

With the help of American women, the transition to a pipe of a different diameter or from a different material is decided. With an American, you can create a corner connection.

The convenience of an American type connection has led some manufacturers of plumbing equipment to use it as a mounting element in the design of branded taps, meters, filters, etc.

The American is produced from the following materials:

The last option is a combination of polypropylene with stainless steel, it is often used when installing plastic risers.

Depending on the thread, external or internal, there are three types of American women:

coupling-thread;
coupling-coupling;
carving-carving.

There are also options without thread, for welding connection.

Choosing the right part allows you to get by with one connecting node without additional elements during installation.

Detachable connection type American is available for all running sizes of pipes.

In practice, most often you have to deal with the sizes 1/2 inch and 3/4 inch.

Advantages

Connecting assembly

To tighten the union nut of American women, a conventional open-end or adjustable wrench is used.

A wrench should not be used as it may damage the nickel plating.

If the nut has a decorative finish, use washers. Suitable pieces of plywood, plastic or rubber can act in this role.

When installing metal-plastic pipes, you will have to use a special tool - an internal key. With it, the press fitting is twisted during installation. The most common form is a cylinder with two notches for hooks, sometimes a hexagon.

Often, pliers or other handy tools are used instead of a key. However, there is a risk of damaging the product. If you plan to install several pipes, it is better to purchase an internal key for American women.

Those who know how to work with metal can make a homemade cone key to the required size.

The taper is necessary for an accurate hit in the recesses.

For an American 1/2, the corresponding key sizes are 12x12 mm and 10x10 mm. The shape of the key is L-shaped, the length of the handle is approximately 150 mm.

They make similar homemade products from unnecessary pieces of profile reinforcement.

Watch the video, which explains in detail the device and features of the use of an American woman in plumbing:

This is the name of the type of threaded connection of pipes in water supply and hot water systems. With the appearance on the market, the American quickly gained popularity among plumbing specialists due to the ease of installation and the reliability of joining pipeline elements.

If you need to connect pipes - an American is ideal. Indeed, later, when performing repair work, there is no need to dismantle part of the network.

It is impossible to assemble a pipeline from a single pipe. It is necessary to perform rotations and connections of pipeline elements in order to obtain the desired configuration. Fittings have always been used to make joints.

You can also install using a coupling, which in the standard version is a threaded part. When connected, it is screwed onto the threaded part.

The next part is rotated into the clutch and such an operation (especially if all the elements are large) is quite a noticeable inconvenience.

What is an American

threaded fittings - are attached to one part of the water pipe at the connector point;
reciprocal branch pipe with a shoulder - is installed on the second end;
union nut - is installed on a fitting with a flange before it is installed in its location.

Further, when tightening the nut with pressure on the shoulder, the fittings are tightened one to one and these two parts are compressed. Gaskets are used to ensure the tightness of the docking with the help of a coupling. And with a conical joint, it is not required.

If it is necessary to dismantle the section docked by means of an American, it is enough to unscrew the nut, while the mating elements of the pipeline remain motionless.

Types of docking nodes. The number of design solutions for installation corresponds to the number of varieties of molded products.

By type of materials used

It provides for the use of homogeneous elements, primarily in order to avoid electrolytic corrosion, therefore fittings are produced in various designs:

. The life cycle of such parts is also limited by the tendency to form lime deposits from water on internal surfaces.
Copper- less susceptible to corrosion, they are used only on pipelines made of the same material.
brass- the most popular in application, resistant to oxidation, durability is at least 50 years.
Polypropylene- in terms of strength characteristics and ease of use, they are increasingly competing with metal products.
Polymer– have all the advantages of plastic products. For polypropylene pipes - American is the best type of connection.
Combined- are used as adapters when joining pipes made of metal with plastic ones during partial replacement of the pipeline. To make such fittings, a threaded metal part is pressed into a plastic body.

By type of assembly method

In addition to differences in the materials of manufacture, the threaded connection differs in the design of the docking units.

They are threaded, with different threading directions, having internal or external threads on the sides. Samples with a conical joint are also used, with the help of which an American connection is made using a persistent compression ring under the nut.

Video

Such a variety of fittings creates certain difficulties in choosing them for an inexperienced person, but it gives real pleasure to professional performers.

Surface protection method

What are American women by type of protective coating? Steel and cast iron products are coated with a protective nickel or zinc coating to protect against corrosion.

For plastic or stainless analogues, protection is not applied. In this regard, it is recommended to use linings for pipe wrenches or special wrenches with internal engagement of the part.

Docking metal components

Pipelines for various purposes made of metal are still widely used in plumbing. Therefore, the installation of metal pipes is widely used in a variety of options.

For simple joining, threads must be cut at the ends of the elements to be assembled using a standard threading tool. The American is screwed onto the prepared ends, while it is necessary to seal the threads by winding the FUM tape or strands of flax fiber.

The final connection is made by tightening the nut and installing the gasket. If the connector is reused, the gasket must be replaced. The joint is reliable and maintainable. What are Americans for metal components:

direct connection of metal pipes;
installation made at right angles, as well as angles of 30 and 45 degrees;
installation of cantilever water supply elements with a pipe, such as taps, mixers, air vents;
threaded connection to change to a different diameter;

American allows you to get a sealed joint in pipelines of any configuration.

Docking of plastic components

The connection of the components of pipelines made of composite materials has its own characteristics. Docking of polypropylene pipes is carried out by welding with special equipment. The process is very simple and is carried out on site during the installation process.

Video

Designs are widely used where docking with a polypropylene pipe is made on conical American women, where devices with a sealing ring are used.

The connection of polypropylene pipe-rolls with an American is the most reliable and almost the only way of docking using a detachable coupling, including connecting a heated towel rail.

Several types of connections are used for polypropylene pipes:

coupling with external thread;
coupling with internal thread;
device with simultaneous use of internal and external threads;
angular, produced with an angle of 30, 45 and 90 degrees for installation in hard-to-reach places.

Installing a towel dryer

The installation of such a device in the bathroom can serve as an example of using a threaded connection for inserting additional equipment. The heated towel rail is connected either to the heating system or to the hot water circuit.

Video

In the second case, you will have to use the services of the DEZ to turn off the DHW riser for several hours, in the first case, you will have to wait until the end of the heating season.

Work can be performed in the following order:

Install the dryer in its permanent location.
Make a tie-in into the DHW or heating riser with the installation of threaded fittings for inlet and outlet flows.
Install corners with ball valves on them.
Connect the heated towel rail through plastic pipes. The critical temperature for them is 95 degrees, in neither system such a temperature is used.
On the upper register, install a valve to bleed air from the system, otherwise the air lock may prevent the circulation of the coolant.
Check for leaks in the dryer by opening the inlet and outlet ball valves. If there are leaks, you need to re-check the joints by applying additional seals on the threads. Linen tow, fluoroplastic sealing material (FUM) in the form of a tape or cord are suitable for this.
The installation of ball valves will allow for repair work without disconnecting the riser. It should be noted that the connection of a heated towel rail with a polypropylene pipe requires a careful attitude, since the clamping ring cannot always be reused due to its deformation.

Connecting the heated towel rail to the riser with a polypropylene pipe using conical American women allows you to avoid the use of pipe benders. This reduces the complexity of work and their adjustment in place.

An example of connecting a heated towel rail through a threaded connection is shown in the figure.

Coupling element dimensions

In domestic plumbing standards, American women are classified as "sleeve connections with a union nut."

Naturally, their size range corresponds to that on the molded elements of water pipes. What types there are depends on the method of docking to the main line or console element.

Video

So, when installing a faucet or faucet, as an element of plumbing, American women are used in sizes from 3/8 to ¾ inch with conical threads. This allows you to make a reliable installation in just a few turns of the nut.

For water pipes, they are used in the range of 10 - 50 mm, the maximum indicator is typical for connection with a heated towel rail.

To connect pipes made of polymers, special couplings are used - conical American women, on which the plastic sheath is literally pulled by the force of the screwed nut through the thrust ring, providing a tightness of the joint several times higher than the pressure in the system.

Pipe dimensions

For an American woman in plumbing, threads can be selected based on the data shown in Table 1.

When using plastic pipes, the properties of the material must be taken into account. such as elasticity, plasticity chemical resistance.

Video

Therefore, for polypropylene products, an American is practically the only connection method that provides high-quality docking. Applying them locally, it is possible to assemble a pipeline of any configuration with a high degree of reliability.

For installation by means of an American, its dimensions must be adequate to the pipes used. For cold and hot water networks, this is an inch or an inch and a quarter; for heating systems in a private house, it is better to use one and a half inch products.

When using plastic products for drip irrigation systems, it is sufficient to apply half-inch sizes.

It should be remembered that a temperature of 95 degrees is critical for polypropylene pipelines, this parameter must be controlled when connected to heaters. The temperature at the outlet of the device may be above the permissible limits.

When partially replacing the water pipe with a plastic one, the American is used as an adapter.

Video

When installing with American women with a protective coating, you need to use a special tool that does not damage the cladding layer.

When selecting components for the pipeline, it is necessary to take into account their location in terms of accessibility and functionality.

Conclusion

The invention of the method of connecting the elements of the pipeline "American" has become a revolutionary event in the field of installation of plumbing systems of any complexity. As a result, such a complex process has become accessible even to performers with minimal skills in this area.

Without a doubt, complete this type of connections and success to you!

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An American with an internal or external thread is used by all experienced pipeliners. With this prefabricated quick-release pipe fitting, two risers can be securely connected.

The design is a collapsible combined coupling, the structure of which provides for the presence of 2 and a union nut.

American women types

The versatility of the device lies in the fact that the device is connected to the pipeline system with just one union nut.

Classification by purpose

According to the functional purpose and design, an American-type threaded connection can be:

flat. This option is quite compact. The tightness of the connecting part is provided by a gasket. Over time, it is necessary to regularly tighten the nut, if necessary, change the used gasket. Given this fact, it is desirable to mount this type of connection in places with good access to it;
conical. It is not equipped with a gasket, since the conical structures are highly polished, and when mounted they fit very tightly to each other.

Important! It is necessary to ensure that the deviation of the pipes along the axes does not exceed 5⁰. Otherwise, the bond may not be airtight.

Since the reinforcement part is used at very important joints of pipeline elements, it must be carefully checked for possible hidden defects.

Important! The conical type of product is considered more reliable. Therefore, with its help, they connect parts that must function flawlessly in conditions of sharp temperature changes.

Fastening using the design is increasingly being used in the laying of pipelines, pushing into the background the squeegee-coupling device with a lock nut.

Types of threads respectively

If we classify products by thread, then we can distinguish 3 types of connecting structures:

"mom-folder";
"mother-mother";
"folder-folder".

Advantages

The fastening structure is different:

reliability;
fast, easy assembly and dismantling. By turning only the union nut, in a matter of seconds, the joint can be mounted without any rotation of the risers. This fastening cannot be compared with a squeegee-coupling type connection, for the implementation of which many different parts, tools, materials are required;
the ability to create straight and angular joints;
compactness;
reusability, since the assembly-disassembly process can be carried out more than once, which does not affect the quality of subsequent fastenings.

The last two conditions entail significant cost savings, which is of great importance to most citizens.

In addition, due to the ease of installation, most manufacturers of plumbing equipment began to design branded faucets, meters, filters in combination with a fastening structure.

The versatility of the device lies in the fact that with different combinations of fitting connections, American straight and angular types are assembled to each other, designed for fastening pipes of various diameters. More often than others in such cases, GOST 8959-75 is used.

The use of cone-type devices makes it possible to ensure high tightness of metal-to-metal joints without using gaskets. This know-how helps to increase the service life of the parts.

disadvantages

Probably the only "minus" of this is its high price. It is this factor that can cause the choice of a different type of fastening of the risers to each other. Although, it is also characterized by a high cost. So the choice is yours.

About connector assembly

Those who have not dealt with this connecting structure are often asked how to twist an American. Let's say right away that there is nothing complicated, you just need to have some information about the structure of the fastening unit and have elementary skills in working with keys.

So, to tighten the union nut, you can use an adjustable or regular open-end wrench.

Important! When installing the connection, do not use a gas (pipe) wrench, as the chrome or nickel coating may be damaged.

Important! When using union nuts with a decorative coating, turnkey plywood or plastic gaskets must be used. Otherwise, you run the risk of being left without decoration on the union nut.

If you need to fasten the metal-layer using the device, you need to use the internal key. Its cross section is a hexagon, it can also be in the form of a cylinder with two notches (engages). Used for mounting press fittings.

Internal key

When this device is not available, they use pliers, other improvised parts or tools. But the key still needs to be purchased if you are going to mount not one connection, but the whole system ().

Anyone with metal on “you” can make a key for a cone of the required size. The cone-shaped end of the tool is necessary in order to accurately get into the recessed hooks. The key is L-shaped with a handle length of about 150-160 mm. For its manufacture, profile fittings (trimmings) are used.

Mounting algorithm

Using an element of pipe fittings, it is quite easy to connect.

In order for the joint to be of high quality and last for many years, it is recommended to adhere to the following algorithm:

Make a drawing of the future pipeline, on which mark the locations of the connections, apply the distances between them.
Prepare pipes. That is, you need to cut them into the necessary pieces, chamfer.
Carry out calibration (editing) of the ends of the risers. This technological process is necessary in order to ensure high-quality pipe joints.
Install a fitting on the end of the pipe, tighten the fitting not very much, correct the correct installation of the part, and eliminate possible problems. If there are no distortions, and it is visually visible that the device is placed correctly, tighten the union nut.

Important! Try to tighten the union nut as tightly as possible to ensure that there are no leaks.

Those who work with the structure for the first time, and before that, for example, dealt with galvanized threaded fittings, may have doubts about the tightness of the fastening. To be sure, they wind the FUM tape under the thread or, although this is not necessary. The connection reliably seals the joints. Whoever connects the pipes at least once with the help of an American will use it all the time.

About Applications

The American fitting, like the polypropylene pipe itself, is used for the installation of various kinds of main pipelines.

It is used when laying:

heating systems;
plumbing for hot and cold water;
gas pipelines;
sewer systems, including magnaplast plastic sewerage, other pipelines.

American - the most common, convenient, reliable, in some cases an indispensable fastener.

When mounting a water meter at home, one cannot do without such a reliable part, since the “input” and “output” can be perfectly done only with the help of this fitting.

Important! The ease of use of the connection can be seen when dismantling the water meter for inspection or repair, since the fixture can be easily unscrewed.

When installing heating radiators, this fastening device cannot be dispensed with. In some situations, the fixture is the main node of the heat or water supply system.

When repairing radiators of a heating system, the use of a fitting significantly reduces repair time and simplifies system assembly.

The device is able to function efficiently in conditions of high pressures, sudden changes in temperature.

Due to the presence of various modifications of connecting devices, it is possible to quickly and easily fasten plastic and metal-plastic structures, metal and plastic products, plastic risers.

Using an American, you can mount almost any connection of pipeline elements.

In many cases, even those with a flange connection are successfully mounted. To do this, a thread is welded to the flange, after which they continue to connect the elements of the system with the help of an American. This is also what makes this truly versatile piece of pipe fittings unique.

The design fits perfectly with steel welded tees, steel bends, spurs, couplings, taps, steel pipes, and other parts of pipelines.

These and other elements of pipelines are used for laying risers in bathrooms, kitchens, country houses, and other buildings. The reliability of the connection with the help of an American makes it possible to install special bathroom furniture in the bathroom, since the possibility of direct contact with water is excluded.

A novice plumber or a simple layman can mount the fastening of risers using an American. It's all about the simplicity, and at the same time, the versatility of the connecting structure.