Ball nut with cap nut - a solution to a number of plumbing

When distributing pipes to an apartment, several types of connections can be used, conventionally all of them can be divided into 2 - detachable and one-piece. The cap nut is used when connecting the “American” and allows you to significantly facilitate the work not only when joining pipes, but also when installing cranes.

About the advantages of ball valves with cap nut

Of course, it’s convenient to entrust all the work in the apartment to the specialists, but many do the pipe work themselves. In this case, the value of the detachable docking method only increases - when it leaks, it can always be disassembled and further sealed.

As for the ball models with cap nuts, their use allows:

• This design allows for the connection to rotate only the nut - this is especially important when working in cramped conditions;
• the dismantling of such a joint is performed without damaging the pipeline - it is enough to unscrew the nut. In the case of, for example, with a welded pipe joint, this would not be possible;

• the use of a cap nut simplifies the solution of some sanitary tasks. For example, such a design can replace the traditional sanitary sgon. If, in general, a sufficiently long section of threaded pipe, coupling, return thread and lock nut is required, then an American tap replaces this design.

As for the field of application, such devices are used for joining relatively small diameters. The maximum size is limited to –3–4 inches, but the most common size is 0.5–1.5 inches, because pipelines of a small diameter are used when wiring pipes around the apartment.

Learn more about using American ball valves.

Such devices have the original internal device, which has several advantages over the traditional design. And the union nut allows to simplify the installation process as much as possible.

Classification

Such devices can be divided into several types, depending on the type of handle can be used:

• handle - allows for greater length when closing due to the length;

Note! Cranes with a handle are recommended to be installed only in places where there is no problem of free space, otherwise the handle will constantly rest against obstacles.

• Butterfly - is compact and suitable for installation in hard-to-reach places.

As for the size, the minimum can be considered? inch, as for the maximum, 4-inch ball valves can be taken as the upper limit of the range. But the tap with a cap nut 1 - 1 2 inches is used in heating systems and plumbing of most apartments, so this size can be considered quite common.

Depending on the intended type of connection with the pipeline, you can select different combinations of choke and docking with a cap nut:

• choke-choke - the manufacturer provides a choke connection for valves with pipes on both sides;

• fitting-nut - on the one hand, the connection is union, on the other - with the help of a cap nut;

• Nut-Nut - Ball Valve Nut can be considered ideal for installation in hard-to-reach places. Such a crane can be easily embedded in any pipe.

Internal organization

One of the main advantages of ball valves can be considered the ability to shut off the flow of liquid almost instantly, just turn the knob 90? С. In counterparts with a valve in order to shut off the pipe you need to turn the valve several times.

Note! On the other hand, instantaneous shut-off of the fluid flow is fraught with water hammer. Especially if this action is simultaneously performed by several consumers at once.

The bolt mechanism looks like a metal ball with a hole in it (parts of the ball are cut off). Rubber is used for sealing (other synthetic materials can be used instead of rubber) gaskets. They can be spring loaded in order to compensate for abrasion over time. According to this principle (with some reservations) all similar devices operate.

In cheap models, the ball can be in a free position, in the closed state the flow of fluid presses it to the passage and due to this, tightness is ensured.

Installation Guide

When performing small work in the house, it often turns out that shut-off valves need to be installed in the most inaccessible place, the ball valve 1 2 nut-nut would be the ideal solution in this case. On both sides it is possible to attach it to the pipes using a cap nut.

In this case, the connection occurs according to this scheme - the nut is put on the pipe, a gasket of the appropriate form is inserted into it and then it is screwed onto the external thread. Depending on the manufacturer, only the shape of the gasket and a number of small parts may differ.

Instructions for connecting the tap to the pipeline will look like this:

• first the nut itself is put on the tube, the gasket;

Note! When choosing a gasket, you need to pay attention to the shape of the end face of the crane. If the edge is sharp, then it will simply cut the gasket and the joint will most likely flow. In this case, you can either buy a special gasket, especially since its price is low, or use a file to cut off a sharp edge.

• if the tube is metal, then its end can be flared, the resulting flange ensures tight clamping of the end of the pipeline to the crane;
• then the nut is simply screwed onto the external thread, For additional tightness of the connection, it is recommended to use a FUM tape or flax underwrap (it should be wound on an external thread);
• leak test is performed.

This is not the only way to connect, instead of rolling, for example, if you need to attach the PP pipe, you can use a special metal compression ring. But in general, the principle of connection remains the same.

In conclusion

From the point of view of ease of installation and operational capabilities, ball caps with a cap nut simply have no competitors. Their use makes it possible to significantly ease the difficult everyday life of plumbers, and the ease of installation will allow non-specialists to use them when repairing water and heat pipe in the apartment.

The video in this article shows the device sgon using a ball valve American.