Du32 ball valve: design features and scope

16-02-2018

Water supply

Currently on the market of building materials you can find a lot of various fittings and assemblies for the manufacture of the pipeline. Modern manufacturers simply flooded the shelves with various products that differ from each other not only in their design, but also in the material of manufacture. At the same time, DU ball valves are still in great demand among craftsmen, since they have proven to be reliable and durable locking mechanisms.

Amateur photo of valves of a similar principle of action

Construction and variations

To begin with, it must be said that such products are not new. This shutter system has been used for over a hundred years and has proven itself in various industries. At the same time, the price of such products is practically no different from other locking mechanisms, and in some cases it is even much lower.

Drawing of the internal arrangement of ball-type flange fittings

Design

This product uses a spherical part with a hole as a control element.. She turns in the knot, substituting the right side. Thus, the ball valve does not block the water, and in fact completely blocks the wire channel.

All pipeline shut-off elements may have different connection systems, which very often depend on the diameter.

Since the control element is movable, then polymeric gaskets are used for its fixation and sealing, which practically completely occupy all the free space.. It is worth noting that even a ball valve with a gearbox, if this element is damaged, does not leak, because the water just physically cannot get under the valve.
Special attention should be paid to the fact that to overlap the system, it is necessary to rotate at 90 degrees and no more. Therefore, the handle that the ball valve DU40 has and the like has special stops that limit its movement.

Tip! At the moment, such products are made of a variety of materials, but it is best to opt for the design of stainless and durable metal. Then the service life of the entire system will increase several times, especially if you plan to use the valve frequently.

Pass gland flange valve is usually used in high-pressure lines

Kinds

When they say about the ball valve DN 40, it means that its diameter will be 40 mm. This usually corresponds to 1.5 inches, although some manufacturers have their own label. Also, this parameter depends on the country where this product is manufactured.

The simplest element often used in domestic pipelines

It is worth noting that the acronym DU says that the following numbers will indicate the nominal diameter of the passage. Therefore, if a ball valve DN 6 is purchased, this does not mean that such a thread is needed on the pipe itself. For these purposes, use a different marking, which depends on the connection.

Speaking about the types of similar products, it is necessary to mention such a product as the ball valve DN300. The fact is that such models are usually used on trunk lines and therefore they have a flange type of connection. At the same time, the ball valve DN 300 can even be used on sewer pipes, but for this there are special varieties that are equipped with wear-resistant gaskets.

Tip! To choose the type of crane used, you need to rely on the project, where not only its marking is indicated, but also the full name in accordance with GOST.

The internal structure of valves of this type, shown on a special model

Scope and properties

When purchasing such a product as a ball valve DN 65 or similar, it is necessary to know exactly for what purpose the specific model is intended. It is very important to understand the properties of this part and their compliance with the tasks.

There are such models of cranes, which are specially made for installation for welding

Advantages and disadvantages

First of all, it must be said that the d10 ball valve has a high degree of reliability even with intensive use. It can withstand high pressure and ensures complete closure of the channel.

Some special types of similar stop valves made for specific needs

Also, such products can be called universal, since they can work in almost any environment and with different types of substances. However, do not allow ingress of abrasive materials.
This design is very easy to install with your own hands, and it almost does not need periodic maintenance or maintenance.

For domestic purposes, brass products are considered the most reliable.

Although the instruction manual does not recommend the use of these types of fittings with abrasives, their design physically eliminates the accumulation of dirt and the formation of blockages.
It is also necessary to mention the principle of operation of this element. The fact is that a smooth ride and a small angle of rotation are simply indispensable for some systems.

Tip! There are practically no drawbacks to these cranes, since for each type of work you can choose the appropriate model.

If the crane will be used to work in the gas line, then its handle is painted yellow, although some masters claim that this is not necessarily

Application area

Products of this type are used in almost all types of pipelines. They can be installed on water supply, oil, air and even steam. In this case, the ball valve on the remote control 57 and models with a large diameter are also suitable for sewage.

Size chart of flange products from a reputable manufacturer

Such locking mechanisms tolerate cold well and can operate at low temperatures. However, it is immediately worth noting that the internal heating should not exceed 200 degrees. This is due to the fact that the gaskets begin to lose their properties and are destroyed.

For regulatory products, a special mechanical drive is installed, which controls the rotation of the ball in the device and shifts it with one rotation of the handle just a few degrees

Typical ball valve DN 10 and other models of locking mechanisms of this type are usually made in such a way that their bore is fully consistent with the diameter of the pipe. This minimizes hydraulic losses, which is very important when transporting gas through the pipeline. Therefore, in this industry they are always in demand.

Tip! According to this principle, recently began to make mixers and outlet valves. Understanding the superiority of such systems, professionals usually prefer them.

Recently, such products began to be equipped with electric actuators, which not only allow remote or automatic control, but also make it possible to precisely adjust the opening degree of the crane.

Conclusion

After reading the video in this article, you can learn more about the locking mechanisms of this type and their merits. Also taking into account the article proposed above, it is necessary to conclude that these valves have a number of advantages over other models of similar purpose and most experts prefer them.