Flanged ball valve - description, application, features and reviews

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2020-03-19 10:00:11

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Flange taps, is valves, the use of which has been so easy and convenient that with their advent the number of gates is greatly decreased.

Methods of connection and pipelines

The Main classification of this valve is based on the connection method. Are coupled, welded, flange and nipple. Flange taps are most often used in cases when it is necessary to install isolation valves on the pipeline for industrial use. Systems of this type include the following networks:

  • Pipelines utilities;
  • System for transmission oil of the working environment;
  • Oil;
  • Network for cooling and compressed air;
  • Pipelines.

In addition, actively flanged valves are used in industries such as agriculture and shipbuilding.

valve flange

Detailed breakdown

The Main element of the shutoff valves is a ball-stopper. Inside this part there is also a hole with a square and circular cross-section. In order to secure the stopper inside the valve, use a wide variety of fasteners and gaskets, creating leaks. Fixing is done directly to the valve, which further controls the flow of fluid. Position flanged valve only two, it can be either fully open or fully closed.

At present such devices are produced with a very wide range of diameters from 15 mm to 1400 mm. But more often the crane resort when the diameter of the pipeline is 50 mm or more.

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ball valve flange price

It is to be noted that the location of the ball can have two ways, which depend on the diameter of the tap. If the device has a small value of the diameter, then the ball is floating. If the figure exceeds 50 mm, the ball is sealed on the supports. It is also worth adding that the distinguishing feature steel flanged ball valves is that they have very high strength, allowing them to operate in environments with high blood pressure.

Various device characteristics

As any equipment in need of repair, the way the cranes are also divided into two categories. The first group is molded device having a molded one-piece body. If they fail, the repair are not subject, you need to change the fittings for a new one. The second group is collapsible gate details consisting of two parts connected in a single body. To disassemble it is not difficult, but because there is the possibility of replacing only the worn parts and not the whole valve as a whole.

In addition, the division is also in the class of drive used in your device. Standard models have a manual gearbox. Next come the cranes with electric drives, but to install them requires additional support. The third type is a valve with pneumatic actuator. Another important characteristics is the degree of crossing of the working environment. There are as reduced models that allow up to 50% the working environment. Standard types flow from 70 to 80%. Full bore models - more than 90% of the material.

flanged valve price

Price of ball flanged ball valves

Naturally, the cost of these devices is totally dependent on their characteristics, as well as from the manufacturer. For example, valves with a diameter of 100 mm costs about 3,500 rubles. Thus it has the following characteristics:

  • Price flanged ball valves is highly dependent on what type of environment will have to operate: water, air, oil products, lubricants, and fluids, not containing abrasive constituents.
  • Working pressure in these valves can reach 1.6 MPa.
  • The Maximum temperature of the working substance is 200 degrees Celsius.

Produced such a model in Russia, their weight is about 13 kg. Has a similar flanged ball valves, price of which is about 3 400 rubles. Their releases company Also located also on the territory of Russia. If to speak in General about the difference in the amount the cost of such tap 3 starts from 300 and can reach 44 000 rubles.

crane steel flange

Material, setup and operation

As raw material for the production of these devices can be used in cast iron, bronze, brass, stainless steel. If we talk about operation of these devices, they can be applied only where it is necessary either to pass or to block the flow of the working substance. As a regulator, these devices can not be used. During the process of installation of the flange of the ball valve 100 mm, or any other, it is important to consider several parameters.

  1. Type of control valve and type of piping.
  2. The direction of the strip network - horizontal or vertical.

In order to carry out the installation of the crane, you must complete several required steps:

  • Before proceeding with the installation, you need to conduct a full audit of the device. It is important that the device had no damage.
  • Next you need to check the valve and tubing such as alignment.
  • Direct mounting of the valves is held between pipe flanges. You need to use the seals.
  • Before starting to installreinforcement is also important to hold the axial alignment. In other words, you need to evenly tighten the bolts around the perimeter.

flanged ball valve 100

Terms of use

During the operation of these devices, you need to follow a few simple rules.

First, it is important to conduct regular technical inspection of flanged valve 80 mm or any other. Periodicity of this kind of inspection depends on operating conditions and operating environment. However, the difference in time under any circumstances can not be more than 6 months.

Second, if the valve is almost always operated in one position, that is all the time open or closed, it is necessary to periodically change its position. This procedure will prevent the appearance of deposits on the surface of the spherical element of the design that will significantly increase its service life. Such works should be done two to four times a year.

crane flanged 80

Pros, cons and reviews

Of the obvious advantages is to provide high reliability and almost no need constant maintenance. Much also has low resistance to hydraulic flow and the ability to completely block the flow of the material.

The disadvantage is that if it is a manual type, he has a pretty long handle that has to be taken into consideration. Also worth mentioning that the weight of flanged ball valves is quite large.

As for the reviews about these products, they are mostly positive. The greatest recognition among the buyers were companies such as Bugatti, FAR, Oventrop. These manufacturers have proven their products, as one of the most reliable. Some of the negative reviews are mostly related to the fact that the product was purchased defective. Most often the problem is getting the metal from which manufactured the crane.


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Alin Trodden - author of the article, editor
"Hi, I'm Alin Trodden. I write texts, read books, and look for impressions. And I'm not bad at telling you about it. I am always happy to participate in interesting projects."

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