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“American” in plumbing is a quick-release connection that consists of three parts (two mating threaded ends and a union nut).

"American": characteristics

The quick-release threaded “American” is available with a conical or flat connection. The simplest product consists of 4 parts: a union nut, two threaded fittings, and a gasket. By the way, the gasket is not always included in the product. “American” fittings are airtight, which was made possible thanks to the conical surfaces of the edges of the parts, as well as the rubber gasket. If we talk about the flat American, then the tightness in it is achieved through one gasket.

Where are “Americans” used?

The products are designed for quick and convenient disconnection or connection of pipes, as well as various shut-off and control elements of the plumbing and heating systems. A connector or connection using an “American” is carried out using only one union nut. This connection can be used several times, and it is possible to change a leaky gasket. The “American” has an advantage over the standard locknut and drive with coupling.

American cranes have also become widespread. This can be a straight or corner tap. Designed to work with hot and cold water supply systems, does not tolerate aggressive environment. Temperature limit products for plastic faucets is 90 degrees. If the material is made of brass, it can easily withstand temperatures from -20 to +120 degrees.

Video review: What is American?

What are “American women” made of?

For plumbing, the product is made from various materials. Thus, cast iron “American” ones are available for sale, made of stainless steel and brass coated with nickel or chromium, combined with polypropylene parts. They are available in a variety of sizes and designs (angular or straight), designed for different pressures in the water supply or heating system.

How to choose a key for “American women”?

For mounting and dismantling and repairing detachable connections, a special key for American women is used. In the plumbing industry, it is quite common to encounter ¾” and ½” “American” ones with two internal projections. A hexagon is rarely used. Pliers also cope quite well with the role of a key; they can cope with two ½” “American” ones.

The American is a universal and indispensable device that is used in household and industrial construction pipelines of various configurations. Almost all craftsmen have to face the need to create a quick-release connection on a line to replace a section of it, insert an insert, or clean it. Thanks to this useful invention, plumbers had at their disposal a variety of American plumbing fixtures, allowing them to do the job quickly and efficiently.

The “American” connection owes its name to the country where the technology for threaded connections of materials was developed different sections and composition. GOST USA The American thread standard does not coincide with the standards in force in Europe and Asia. But quite often there is a need to create a unified system of pipes and plumbing fixtures of different origins. In order to adapt their products to the standards of importing countries, American designers came up with a technology for quick and reliable joining of plastic, copper and steel pipes.

American couplings are used to perform the following tasks:

• inserts into the system of tees, taps and other devices;
• replacing the damaged section of the highway;
• installation without the use of electric and gas welding.

To understand what an American woman is, you need to consider design features this category of fittings, study their properties, advantages and scope of application.

What types of fittings are there?

The assembly of water supply, heating and gas pipelines requires the presence of many branches, branches and intermediate devices. At the same time, it is necessary to provide connection options for heated towel rails, toilet tanks, radiators and many other devices.

The detachable connection of pipes must be tight, strong and durable.

Particular attention is paid to the aesthetic side of the issue. To achieve these goals are used.

Gusset

It is used at the joints of pipeline sections at a certain angle. If earlier adapters were welded into the system, now this need has disappeared. American girls have corners various diameters and degree of bending. Products available for sale are curved at angles of 45º, 60º, 90º and 135º.

The main advantage of such fittings is that the transition from one direction to another is smooth. The connection with the union nut ensures a tight fit of the joints and optimal pressure on the rubber gaskets. At any time, it is possible to remove the fitting for inspection or cleaning of the line.

coupling

The combined detachable coupling is used to connect straight sections of the main line. American inch thread allows you to pass non-ferrous and ferrous metals.

Despite the simple-looking device, these fittings are capable of ensuring tight joints throughout the entire period of operation of the system. An undoubted advantage of using a coupling is the ability to unscrew and remove it. The product is reusable and can be used many times without loss of quality characteristics.

Cranes

Experts recommend using sealing tape when installing an American brass straight coupling to prevent even the slightest chance of leakage. Cone fittings are usually installed in heating and hot water supply systems, as these products are resistant to high temperatures.

Flat fittings use a flange nut on the flange and a flat gasket to provide a seal. It is easy to install cylindrical inserts; you can use gas wrenches for this. The disadvantage is that the gasket decreases in size over time, changes shape and begins to leak water.

It is not recommended to hide such varieties of Americana in walls or under decoration. A leak will definitely occur, it’s a matter of time.

With threaded fitting

A similar device with external thread allows you to join polypropylene pipes without welding. In some cases, the distance between the wall and the connection point is so small that the issue can only be resolved by installing an American fitting with a threaded fitting. For work it is necessary to use special tools with a fixed application of force.

With internal thread

When working with pipelines made of steel and brass, durable and reliable fittings with internal thread. The use of plastic in such joints is not recommended.

The tubes are pre-carved to match the American style.

To do this, there is no need to dismantle or cut off part of the system. After this, no matter how many inches the internal thread is, the union nut is screwed onto the pipeline.

Materials

American fittings are made from materials that have different strength, resistance to temperature changes and corrosion. Each pipeline has its own characteristics, for which its own version of connections and inserts is selected.

Steel (stainless)

Stainless steel products are characterized by high strength, ease of use and long service life. They do not change their appearance throughout the entire service.

The cost of steel weld fittings is in the average range, which makes them popular among amateurs and professionals.

Galvanized

They belong to the budget category of goods of this class. Availability of products attracts craftsmen when carrying out construction work large scale. However, the service life of galvanized fittings is limited. Over the course of several years, their geometry is disrupted due to corrosion, which destroys the black iron. The zinc itself moves away from the body of the product after a maximum of a year, revealing unsightly rust.

Brass

A review of the types of couplings for polypropylene pipes allows us to conclude that brass American ones meet all the requirements regarding reliability and safety.

The alloy is durable, elastic, resistant to heat and chemically active liquids. The disadvantage is the high cost and change in color of brass during operation. Appearance Products are improved by chrome plating or powder coating.

Copper

American copper products are produced in limited quantities due to low demand and high cost. Fittings made of this metal are in demand only when they are attached to products made of a similar material. Copper is difficult to care for as it darkens and develops a greenish patina.

The metal is susceptible to electrolytic corrosion, which is impossible to combat.

Plastic

IN pure form American ones are not made from polypropylene only. This plastic does not have sufficient strength for connecting pipes and plumbing fixtures. A polymer is used as a base into which metal threaded inserts are fused. As a rule, plastic American ones are used in systems where there is high temperature and pressure.

Average price per fitting

The table below shows current offers for today.

Advantages and disadvantages

Having examined the features of American plumbing and answered the question of what it is, we can dwell on the advantages and disadvantages of these devices.

Let's look at their advantages first:

1. reliability and strength of the connection, absolute tightness of the connection;
2. simplicity and high speed of installation, which involves tightening one or two nuts;
3. a dismountable connection that can be easily removed and put back;
4. the ability to join pipes made of materials of different structures;
5. a wide range of products of different configurations with seals included;
6. long service life of a structure assembled using American steel.

Fittings in this category have no technical disadvantages. The high cost confuses low-income craftsmen, but it is justified high quality goods. As for changing the color of products made of non-ferrous and ferrous metal, they are installed in technological channels, covered with panels and boxes.

Keys for Americans

• adjustable wrench;
• open-end wrench;
• spanner;
• dies for making threads;
• internal keys with 6, 12 and 34 edges;
• round spacer key.

It is better to buy tools in a set, which is cheaper and helps solve any problems with installing the American one.

How to install correctly

Depending on what material you have to work with, you choose various ways installation of fittings.

At the joints of metal pipes

Steel lines are used to transport hot liquids under high pressure. Threaded connections are used to connect their sections.

First you need to take a die of the required size and make 7 turns of thread at each joint. After this, the fitting is inserted between the joints, and the union nuts are screwed onto the threads until the required degree of pressure on the gasket is achieved.

In plastic joints

On polypropylene pipes they do not make carvings, since they are not intended for this. Adapters with metal fragments with internal or external threads pressed into them are welded or glued to the ends of the pipes (this depends on the operating conditions). And American women are already attaching themselves to these elements.

The coupling is the most widely used plumbing fitting in civil engineering, designed to connect individual parts pipeline. A detachable threaded coupling allows you to assemble a solid branch from individual pieces, consisting of an almost monolithic pipe.

It is not surprising that couplings are now used almost everywhere. We will look at a variety of such products invented in the USA. The American coupling, intended for pipe assembly, is subject to consideration. What is so convenient about it and why is it so popular? Now you'll find out.

Contents of the article

Design Features Differences

The standard threaded coupling is intended for the assembly of pipes and pipelines. Inability to create effective system water supply or heating from one single pipe. Yes, it can be bent and connected to other, large branches, but this will significantly complicate the work without providing any serious advantages.

It is customary to assemble pipes using fittings. A coupling as a fitting - performs the simplest and most common task - fastens pipes together, forming straight or corner connections.

Threaded couplings are much more common than others, because they made it possible to assemble full-fledged branches from individual pipes, but at the same time leave them in a modifiable state. If a branch needs to be somehow modernized, improved, or simply disassembled, all you need to do is unscrew the coupling.

Problems with standard threaded connections enough. This and:

• poor tightness;
• heavy weight, the need to cut counter threads on the right side pipes;
• the need to rotate pipes, etc.

The main problem lies in the design of standard type threaded connections. To disassemble the thread, you need to unscrew it. To do this, you need to rotate either the pipe or the fitting, which adds problems.

The American is like a coupling - it was conceived precisely in order to eliminate such shortcomings and provide plumbers with a convenient part.

The American turned out to be a truly universal example of plumbing. Its design, unlike a conventional threaded coupling, is completely dismountable and consists of at least three parts.

Two of them - counter ends with threaded threads - are screwed directly into the pipe cavity. They can have external or internal threads, it all depends on the specific design. The third part is a union nut, used to fasten the previous two.

The beauty of the whole design is its brevity. The detachable system allows you to connect fittings or ends on pipes by rotating the separate nut. There is no need to twist the pipes, the fitting itself, or the coupling body. Simply connect the coupling parts and tighten the nut until it stops.

Rubber gaskets are attached to the inner ends of the coupling parts. They are needed to improve the sealing of the connection.

Advantages and disadvantages

What specific advantages does the American-type coupling have and how is it useful for joining pipes?

Main advantages:

• American can be easily installed on any type of pipe;
• the ability to form transitions, corner connections, connect taps and any other plumbing fixtures;
• high level of tightness;
• availability on the market;
• good quality and performance;
• the design with a union nut simplifies installation and dismantling;
• a large selection of a wide variety of products to suit every taste and budget.

The advantages are traditionally considered ease of use and tightness. As we noted above, the standard connecting thread on a conventional coupling cannot boast of tightness or ease of installation. The American one saves us from such problems when assembling pipes into a single structure.

As for the minuses, the only thing that can somehow influence your decision is the price. The American one costs an order of magnitude more than a conventional threaded coupling. However, compression connections also cost their customers more, so there is nothing unusual here.

Types and differences

As many types of pipes as there are in modern plumbing, so many fittings are needed for them.

Any detachable connecting part must meet the pipe in several parameters at once. Only in this case will it be fully suitable for use. This requirement is quite logical.

One of the most important points here is the material. If, for example, polypropylene is used as a material for pipes, then it is stupid to screw steel fittings to it. Polypropylene is a polymer material, therefore polypropylene should be the main response fitting. The same is true for any metal products.

According to the material, American women are divided into:

1. Steel.
2. Brass.
3. Copper.
4. Polypropylene.
5. Polymer.

A steel split coupling for pipes is the most famous way to assemble them into a single structure. Steel is moderately cheap, very functional and durable. If we had forgotten about its susceptibility to corrosion, there would probably have been no competitors for it.

However, the situation is different. Pure steel without treatment will begin to show signs of destruction within a few years. Galvanized will last for a dozen, stainless steel will probably last two, which, however, does not save us from the original problem.

Sooner or later, the steel fitting will begin to rust and sour, and its next path is only to be remelted.

That's why people are now more willing to buy brass models. Brass is a metal from a special group. Having characteristics similar to steel, it does not react to moisture or time. Brass fittings, even after 50 years, will be in the same condition as before.

Copper samples are an expensive option for those whose entire piping system is made of copper. Copper is superior to steel and brass in everything except strength.

Polymer fittings and adapters

Polymers such as polypropylene are increasingly used for the assembly of civil water supply systems.

This assembly is being carried out gradually; not everyone has the money, time or desire to completely change the pipes in the house. Obviously, the collapsible system in this case faces a problem.

It is necessary to somehow connect different materials with each other. For example, polypropylene and steel.

Polypropylene, as a polymer, does not cause a reaction in steel, but it is easy to take and screw into steel pipe fittings whose main production material was polypropylene cannot be used. You won't be able to cook them either.

To solve such problems, a detachable type of American women is used, called adapters.

An adapter is a fitting consisting of combined materials intended for assembling pipes from different materials. A split American type of this type will have a steel end with a thread cut on it on one side. On the other hand, it is filled with polypropylene.

It turns out to be a very convenient detail that allows you to assemble the pipes into a single branch without destroying their identity. Each end interacts with its own material, and their tightness is ensured by a gasket system together with a union nut.

Overview of the characteristics of American women (video)

Differences in thread type

American women differ not only in terms of materials, but also in the design principles themselves. They also differ in terms of concrete solutions. For example, different American women may have different types and thread directions.

There are samples with external threads, with internal threads, with combined components, where the thread different parts American women differ. This distribution makes the process of choosing a fitting a little more complicated for beginners, but greatly simplifies the work of professionals.

Its beauty is the ability to choose the option that is ideal for your conditions. It doesn't matter what thread your pipe is made of or what it's made of, you'll find a solution that works.

If one of the components is lost, finding a replacement for it will not be difficult.

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

This connection is widely used in plumbing because only one union nut is needed to join the pipes. The part is made from cast iron, stainless steel, brass containing chromium and nickel, as well as some types of propylene parts and stainless steel.

American installation methods

The method of joining pipes during installation using a union nut is universal. This 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 impossible. The simplest form of this element consists of the following parts:

• Threaded fitting;
• Pad;
• Union nut.

Thanks to the conical surfaces of the parts, as well as rubber gasket, the fitting has a hermetically sealed connection.

The union nut has two types of installation:

• Cone;
• Threaded.

The conical connection makes it possible to quickly install parts in hard-to-reach places without using special tool. In this case, the connection will be tight and reliable.

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

Threaded connections come in the following types:

• Detachable with external thread (it is used to install polypropylene and steel pipes);
• 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. A quick connector is required to quickly disconnect pipes. The speed of work lies in the fact that undocking occurs with just a union nut. An important advantage of the American fitting is that the fitting can be disassembled many times during the operation of the pipeline; only the seal needs to be replaced. 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 fixtures become much stronger and more reliable. When conducting plumbing work It is impossible to do without such an installation. Using this part, installation and renovation work heating radiators, meters, filters, water supply, all types of pipes. 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, the 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 valve, in which the working element has a spherical (spherical) shape. This element is used to pass water, gas, and steam.

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

The American connection can be:

• Direct;
• Corner.

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

When installing plumbing equipment the crane replaces the previously used conventional squeegee, which consists of long thread, couplings, locknuts and counter threads.

The plumbers had to put in a lot of work when carrying out the work. Now you only need to tighten two self-centering parts with a few turns of the key - the tap and the American one.

Ball valve is widely used in installation heating system. The radiator, mounted through a tap, 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 installed on small-section nodes, and the lever on large-section nodes.

Today, plumbing offers customers a wide range of exquisite products - from retro to stylish avant-garde. Global manufacturers apply all their skills to meet customer needs affordable price. In order for such plumbing to serve long years and was pleasing to the eye, it is necessary to use such a part as the American one for faucets and sinks.

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

Cranes are an essential component of any more or less useful pipeline. Whether you like it or not, sooner or later some trouble can happen in the pipes. Breakthrough, clogging, cracking, etc. lead to the need to modify water supply branches.

Modification and repair is a complex process; it cannot be started completely without cutting off the branch from the carrier, or, as plumbers say in everyday life, without “draining” it.

Modern ball valves and their varieties make it possible to easily and elegantly solve the problem of insulating individual parts of a pipeline. The American faucet is especially popular because of its ease of installation and practicality.

Contents of the article

Features and purpose

A standard valve is called a shut-off pipeline valve. As we noted above, its task is to completely block the water or any other carrier going to the branch.

It is impossible to imagine a modern pipeline without taps. They are very widely used in water supply, heating systems, etc.

A striking example - connection of individual plumbing fixtures . Any water supply system is connected to some kind of device. It is connected using pipes and put into operation.

If we didn’t have taps, to repair or modify the system we would have to turn off the entire branch, or even more than one. Don't install a faucet at the entrance to central system water supply, and in the best case, the entire floor will have to be cut off from the water supply during the repair.

With the presence of taps, everything becomes simpler. For example, cistern for a toilet, it is always connected to water, and its insides react to the filling level. You cannot simply remove the tank from the toilet without first disconnecting it from the water supply. She will immediately flood your apartment floor.

Cutting off the entire apartment from the water supply is also not possible. the best option. The tank may need to be replaced; you cannot live without water for several days until you buy a new one. But a correctly mounted ball valve at the entrance to the tank solves this problem beautifully and succinctly. With its presence, you just need to turn the lever 90 degrees, and you are completely ready for further actions.

Similar things happen in heating systems. In heating, the American tap is most often used for insulation of individual branches and radiators.

Experienced plumbers recommend connecting radiators exclusively using adapters from taps. For what? In order to be able to remove the radiator at any time, turn it off, replace it with a new one, etc. At the same time, without wasting time stopping the entire system and without disconnecting full branches of heating pipes.

Connection method

The American faucet is called such for a reason. The thing is that, as a rule, they are mounted on outdated threaded connections.

The problem with threaded connections is poor tightness and inconvenience in installation. They quickly become loose, difficult to install, and not very reliable.

At the same time, the American allows you to solve such problems without difficulty. American is a simplified design for connecting threaded fittings, brought to us, as you probably already guessed, from the USA.

It consists of several parts. Basic kit:

• 2 fittings;
• union nut;
• sealing gaskets.

Unlike standard threaded fittings, which must be rotated to install into the pipe, unions do not need to be rotated. The connection is simply tightened with a nut, which can be operated even with a regular wrench.

As a result, the installation process is reduced in time by several orders of magnitude, and the installation technology is simplified on the same scale. The tightness of the American, due to the presence of seals, is quite high; at least there is no need to check it every few months, as is done with standard threaded fittings.

Locking element design

The main function of the faucet is performed by its shut-off element. The shut-off element blocks the flow of water when necessary.

He must be able to be in at least two positions:

• closed;
• open.

In the first case, the media flow is completely blocked, the tap is closed, and the branch is closed and drained. In the second, the element does not in any way affect the movement of the carrier through the pipes.

There are many solutions for such situations. The most popular and simplest is .

It has such a strong position in the market due to its amazing simplicity, cheapness and practicality. It consists of a coupling, a locking element, gaskets and a faucet handle.

The locking element in it is . This mechanism consists of a metal, most often brass, ball with a hole inside. The ball is connected to the faucet handle and sealed with rubber on all sides. A through hole is cut inside it.

When closing the tap, we turn the handle perpendicular to the pipe, thereby turning the ball with the closed side towards the flow. There is nowhere for the water to flow and the branch is cut off.

If you need to open the system, turn the handle back. The ball becomes in open position, that is, it turns towards the flow with a hole through which water passes without obstacles.

That's all the magic. Nothing complicated. Such simple circuit, however, produces amazing results. In combination with the American type connection method, we get a truly universal and convenient faucet, easy to install and equally easy to remove if necessary.

Considering the shortcomings that it has ball valve, we can only note the impossibility of holding it in an intermediate position. Or rather, you can close it halfway, but nothing good will come of it.

The flow will not decrease by exactly 50%, but it will undermine the seals of the ball mechanism, simply reducing its service life. Unlike industrial valves, the tap can only be kept completely open or completely closed.

Standard type of ball valve with American (video)

Main varieties

American crane is divided into types by type of construction. There is a faucet:

1. Straight.
2. Angular.
3. Combined.

This division is quite understandable and even convenient. You know exactly what you are buying and why. There are many subtypes of cranes, but there is no need to consider them all, because such a detailed consideration will require a huge amount of time.

The first option is a standard direct mechanism, consisting of a one-piece direct coupling and the actual locking element. Mounted on pipe connections, when connecting individual supply lines, plumbing or heating units, etc.

The corner version is distinguished by its smaller size and design, which allows the tap to be formed into an angular turn of the pipe. An angle tap is more expensive, but you can work with it everywhere, even in the most inaccessible places.

Combined products can consist of different elements and parts, be intended for different tasks, serve as adapters, insurance, have pressure or temperature level sensors, etc. They are rarely found in household plumbing due to their high cost and complexity.