American crane and similar fittings: application features

In this, we will talk about what a crane is an American 1 1 2 inch and similar fittings. In addition, we consider what the features of the use of these devices in the construction of domestic water systems and plumbing communications.

"American" - what is it? This is the common name for a quick-release coupling consisting of three structural elements: a cap nut and two threaded limit switches. The device is in demand when building various pipelines due to its durability and ease of installation.

Main characteristics

This type of quick-fit pipe fittings was originally developed in the USA (hence the name) and subsequently spread around the world, after plumbers realized how simple and at the same time a high-quality installation was carried out.

Consider the main characteristics of these fittings:

• Angled American-style crane and similar products allow you to assemble and disassemble a highway without the need for rotating pipes. It is very convenient when carrying out repair work on pipelines fixed in one position.
• American is a plug connection with cap nut. Thus, it suffices to dock the pipe to the coupling and tighten the nut. A characteristic difference from other connections is that the joined elements are fixed.
• Tightness of the detachable connection made by the cap nut is ensured by a dense elastic washer, acting as a gasket.

Important: The success of docking pipes with the help of "American" is ensured by pairing with a high-quality butt, which is professionally threaded.

Application features

Pipeline installation is characterized by long-term tightness of the pipe connection, as a special conical or flat gasket seal is used. As well as the entire assembly, the sealing material is reusable. Consequently, its price is more justified than spending on the purchase of disposable fittings.

Fitting with a cap nut is characterized by small dimensions and straightness and coaxiality of joined pipes. Each end of such a fitting ends with a fitting, which is selected depending on the type of docking. Between the fittings there is a gasket, over which a nut is screwed.

According to the type of docking, the following types of connections are distinguished:

• split threaded docking fitting with internal thread;
• split threaded docking fitting with external thread type;
• split threaded docking fitting with union nut.

Important: Depending on the characteristics of the pipeline, these types can be combined or combined to achieve an optimal result.

Features docking fittings

As already mentioned, in this case a conical or flat seal is used.

The following advantages are peculiar to conic consolidation:

• the seal is made according to the metal-to-metal scheme without the use of additional sealing materials, which means that it is more reliable and durable;
• resistance to chemical and physical effects (including temperature differences) due to the uniformity of the chemical and physical properties of sealing materials;
• possibility of application with a slight (up to 5 °) deviation of the axes, joined pipeline sections without prejudice to the tightness of the connection.

Important: The listed advantages are provided under condition of high precision of manufacturing connecting details. Less demanding on the quality of components is the joining of pipes using a flat seal. In this case, a flat Teflon gasket is used, made in the form of a ring.

Like most other threaded fittings, American parts are made of stainless steel from brands such as AISI321, AISI316 and AISI304 or brass.

A marking can be found on the body of the fittings, which will simplify the selection of suitable connecting elements. The marking indicates the diameter in inches (for example, 1 inch), the steel grade and the nominal pressure in PSI.

Ball valve

The listed characteristics of water fittings could not be more peculiar to the ball valves "American". This kind of valves is used in the construction of water supply and heating systems.

The main working element of the device is a shutter with a characteristic spherical shape, rotating inside the case. There is a through hole in the spherical valve. When the through hole is located in the same axis with the fittings of the fitting, water is supplied. When the hole is perpendicular to the holes of the fittings, the water supply stops.

The design of the ball valve is not new and is widely used for 100 years. But the greatest interest are cranes with the connection "American." Such valves and fittings are used both in domestic and industrial conditions, which is explained by operational simplicity and efficiency.

Other types of American fittings

The American coupling is a fitting designed for joining two coaxially identical pipes or for joining pipes of different diameters.

This type of coupling is not much different from traditional couplings. One side of the fitting is screwed to steel pipes, welded to copper pipes or soldered to pipes made of polypropylene or copper. Another part of the fitting is a collapsible connection of fittings and cap nuts.

For completeness of the review we will tell about the angular type of connection. Corner crane with an American 3 4, as well as just a corner fitting, made by means of two fittings and a cap nut, is characterized by ease of installation with your own hands. Angular docking American guarantees additional convenience where installation is carried out in a limited space.

Conclusion

So, we looked at what an American is and what is the instruction for its use. Now you can find out what type of connecting element is required for installation work and select the necessary pipeline components.

There are questions that need clarification? More useful information can be found by watching the video in this article.