23.01.2017
It is no longer a novelty to hear of the pipe type connection as "American". Despite the fact that this is a fairly new device and originates in America, it has already become quite used. This is due to properties that can solve the problem of many pipelines. An American woman for polypropylene pipes very often becomes an indispensable structural element.
- 1 Specifications
- 2 What are they made of and how to install
- 3 Prices for American women for PVC pipes
- 4 Installation of the connection using American women
- 5 Difference in connection types
- 6 Scope 6.1 Conclusion
Specifications
The material from which the pipes are made is very soft and plastic, it is a completely synthetic component. Such qualities of PVC pipes become an obstacle when it comes to connecting pipeline elements to each other. Many who used standard techniques for connection were convinced of their poor quality and negative result. The reason for such results is the quality of the fastener material and its characteristic features, due to which the deformation of PVC pipes occurs.
To avoid troubles in the construction of the pipeline structure, you should resort to using the American connection, for polypropylene pipes it is ideal, because it has:
| Characteristic | Description |
| Simplicity | Obtained due to the fact that pipes are dismantled very simply, and there is no need to rotate the pipe elements. |
| Ease of installation | The pipe structure is connected due to the fact that the American has a cap nut. This is a convenience, because in addition to this element in the pipeline, all the others retain their stationary position; |
| Tightness | This parameter is ensured due to the fact that in the connecting elements, like an American, for polypropylene pipes, a special kind of cushioning material is used, which, when connected, is tightly pressed against the pipes. |
What are they made of and how to install
The material from which the American is made can be:
- cast iron;
- brass;
- steel;
- stainless steel;
- polypropylene.
Depending on what material you need to purchase an American woman, its cost will vary. Additional parameters that can increase the duration of operation should be taken into account when choosing a material, such as:
- the quality of the liquid that will pass through the pipeline;
- what is the temperature indicator of water;
- at what pressure level the fluids pass through the pipeline.
In addition to the main material for the manufacture of American women, nickel is additionally used. They spray on the inner and outer surfaces of American women, for polypropylene pipes this is necessary in order to create conditions for reliable operation and to provide a protective film from negative influences. In addition, this coating gives the fittings a pleasant appearance.
Considering that pipelines are increasingly being constructed from polypropylene, the connecting devices were made of a similar material, which began to make it possible to attach elements to the structure system using soldering or welding.
Prices for American women for PVC pipes
| Compound | Price, rub |
| American straight type 1 ″ TIM | 258 r |
| American straight type 1 1/4 ″ TIM | 669 r |
| KALDE PP-R American НР? 50 х 1-1 / 2 ″ | 730 RUB |
| American straight type chrome 1 ″ TIM | 368 r |
| American angle type 1/2 ″ TIM | 168 RUB |
| Threaded connection Gas (American) G 1 1/2 "AISI 316 w / w | 2000 RUB |
| Coupling of the combined type VALFEX, split | RUB 250 |
| American made of cast iron, split, 1/2 ″ vn / plank bed SANHA | RUB 185 |
| American transitional type 1/2 ″ bunk x 3/4 vn TIM | RUB 85 |
Installation of a connection using American women
The technological process for the installation of a pipe structure in a combination of polypropylene pipes or them with a metallic look is quite simple. For such purposes, an American woman is very well suited according to the principle of connecting a coupling, in which there is a metal insert, as well as a union nut, or a polypropylene fitting and a union nut can be used.
When using fittings of the American type for polypropylene pipes, you need to know what tool to carry out the work process. If you purchased an American woman in which there is a union nut, then you should use a wrench of the appropriate size. In the case of fittings, with existing press connections, you will need either a hexagonal inner wrench or a special cylinder with a recess for the hook.
The process of connecting pipes to each other is easy, but it needs to follow a certain sequence of actions:
| Stage | Description |
| Preparatory stage | Before proceeding with the installation process, you should carefully examine all pipes and connections for integrity, before that, removing all chamfers, if any, in places where it is required. In the case of polypropylene pipes, a calibration process must be carried out. |
| Fitting element connection | The fixation is started from the part that is designed for the welding process, after which they proceed to join the place on the back of the element where the threaded notches are located. |
| Pre-tightening | Next, tighten the fittings so that they are fixed to? from the maximum possible attachment. This must be done for the reason that you can check how well the pipeline system is working and, if necessary, fix the problems at this stage. |
| Full tightening | After the operation of the system has been checked, you can begin to fully tighten the fixing element of the fitting. The union nut should be screwed on as tightly as possible, since the degree of tightness of the connecting element depends on this. |
| Completion of installation | In principle, the previous stage can be final, however, for those who like to play it safe, it is possible to use Teflon tape, which is used to wind the choke thread. This will provide additional reliability of the pipe connection. |
Using a structure that has an American connection, for polypropylene pipes, the service life can reach 50 years, if cold water passes through the system. If the water temperature is increased, as is the case with the heating system, then the operating rate will most likely decrease by half. It should not be forgotten that the indicator of the duration of use of the fittings depends on the characteristics of the liquid passing through them, mainly on the temperature regime and the pressure level of the supplied water.
With threaded union
The type of connection is used when connecting heating devices (sectional and panel radiators).
It is convenient for installing plumbing circuits, including shut-off valves and devices with an internal thread.
Fittings with two technological "antennae" on the walls are also used. Screwing them in involves a plate tool engaging with the projections.
Note: the male connector is pre-screwed into the device. For this purpose, the configuration of the internal section can be represented as a hexagon.
The principle of an external union, secured by a union nut, is used for the production of shut-off valves made of polypropylene.
Radiator valves, ball valves complemented by an American valve are convenient when installing plumbing. The two-in-one combination significantly saves installers time. Confirmation of this in the video.
Difference between connection types
Before considering the varieties by which connections can be made, where an American woman is used for polypropylene pipes, some of its characteristics should be highlighted:
- represented by a special element with a thread that can be disassembled and reassembled, which allows such an element to be used repeatedly;
- it is also very important that with the help of American women, high speed is ensured during the installation of the structure, and also such a process does not need special skills or efforts;
- repairing the pipeline, if necessary, is also easy if an American was used as a connecting element for polypropylene pipes.
In addition, the generalized concept of a compound "American" contains many more adaptations. A distinctive feature of all devices is the presence of a union nut in the design of the element:
- couplings;
- cranes;
- corners.
If we consider the options in which an American woman can be used for polypropylene pipes, then they may have:
| Internal thread | Any combination in combination of the listed options. |
| External thread | |
| Union nut |
Reference: if we consider the coupling-type connections, then it has the ability to be disassembled and reused. At the same time, the set includes fittings (2 pcs.), Gasket rubber material and a union nut. The dimensions of the device are small, there is no rotation when installing the pipe elements.
Connections that are threaded always need fittings. it is not possible to build a threaded element on PVC pipes yourself, and therefore you can use Teflon tape material in combination with a sealant. Together they will be able to ensure the strength of the joints.
Distinctive features of the American
An American woman is not a specific connection, but a general name that combines a variety of fittings (corners, taps, couplings, and others). Structurally, all these elements differ from their counterparts by the obligatory presence of a union nut. There are other fittings for polypropylene pipes, but in this article we will focus on American.
Among the advantages of an American woman, the following qualities can be distinguished:
- Easy disconnection of the pipeline, regardless of the material used. It is not necessary to rotate the pipes to disconnect.
- Creation of a detachable connection by means of a union nut. This design is good in that when the pipes are joined, only the nut needs to be rotated, while the pipes themselves remain stationary. This factor in most cases is very important.
- Unlike the squeegee, the American is a detachable connection that does not depend on the length of the fitting and the seal installed along the thread.
- Tightness, which is achieved through a special gasket. When using such a seal, a very simple installation is obtained, and as a result, the structure does not leak at all.
Application area
Many areas of application are captured by such a simple device as an American, for polypropylene pipes it is especially indispensable. If we consider in detail the possibility of using a connecting fitting of this type, then the following can be distinguished.
| Where and how | Description |
| Cranes, complex nodal structures in water and heat supply systems. A device serving as a measuring element of various indicators. | In this case, such a fitting, depending on its design, can even become the main and irreplaceable element. |
| Home plumbing communications system | Serves as a transient component in the system of counters and control devices. All connections to the input direction and vice versa are made in them. This provides a convenient removal of the counter if necessary, for example, for checking. |
| Installation and repair work in the heating system | In case of malfunctions in the heating system, the American woman used for polypropylene pipes will significantly reduce the time spent on repairs. |
| Systems where high pressure and high temperature conditions are used | It is quite in demand due to its ability to create a high degree of tightness in the joints in the structure. |
| Combination of plastic and metal-plastic pipe material | With such a combination of materials and the need to combine them, it does not matter what kind of materials there is a need to connect, an American woman will be selected for them in any case. |
What types are there
There are many modifications of the product, differing in the material of manufacture, size, type of thread, type of fastening. For different pipeline options, a specific type of American woman is selected.
American type quick-disconnect connection uses 2 types of fasteners:
1. Taper mount... The joints of threaded fittings are made in the form of a cone, therefore, their maximum tightness is ensured even in the absence of a gasket. Such joints are resistant to temperature fluctuations. They are able to ensure tightness even in cases where there are small deviations in the axes of the pipes to be connected (no more than 5 degrees). If it is necessary to install a thermostat for a radiator, then it is advisable to give preference to the conical version. The absence of gaskets allows the product to withstand significant temperature spikes without the threat of leaks.
Tip: Despite the fact that a gasket is not used for a tapered connection, it is recommended to wrap the tapered surface with several layers of FUM tape. This guarantees the tightness of the joint.
2. Cylindrical (flat) mount... This is the classic American style used for most pipelines. Sealing of the joint is provided by the gasket and the tie of the union nut with the pipe.
Note: Some plumbing fixtures use flat washers. These connections are less reliable and may leak. It is not recommended to hide such places in walls.
American pipe threaded connection can be of two types:
- Direct. Used for joining straight pipe sections.
- Corner. When 2 pipelines meet at right angles, an angle connector is used. It allows you to connect perpendicular pipes.
