The main types and characteristics of ball flanged valves. Varieties of ball tight, flanged valves Brands, characteristics and prices

Living in your house or apartment, every day you use ball valves, and you don’t even notice their significance, but take it for granted.

Probably because earlier, a few years ago, these taps were, and at the present time, undoubtedly, are more durable than other types of valves. It is worth adding that this is the most popular locking mechanism in use due to its simplicity, reliability and durability. Almost every industry uses this affordable equipment.

Varieties and arrangement of ball valves for water

In order to make right choice when buying, you first need to analyze in detail what exactly are ball valves.

Their ball valves stand out for the following key points:

• the service life of any crane is 50 years;
• the manufacturer guarantees 55,000 opening and closing cycles;
• the design of the valve allows you to quickly eliminate the leak even in the event of a complete depressurization of the system;
• ball laser polishing;
• the gasket is made of FPM (fluorine rubber) and PTFE (polytetrafluoroethylene). These materials are highly resistant to chemicals (alkalis, acids, solvents, oxidizing agents), and are used for many years without any maintenance and control.

Production is carried out in modern Italian factories. The technology is focused on the peculiarities of operation of ball valves in Russia, so the products work smoothly even in difficult climatic conditions.

Installation

Before installation, you need to carefully clean the faucet from dust, sand. Installation must only be carried out in the closed position. The ball valve must not be installed on pipes that are subject to vibration.

Assembly order:

pros

• low price;
• low weight;
• small dimensions;
• long working life;
• reliability and versatility of the design;
• no maintenance required;
• low hydraulic resistance;
• can be installed in any position;
• flow tightness;
• the ability to quickly overlap;
• flow in any direction.

Minuses

• to close the tap, long levers are needed, and for automatic closing, expensive electric drives;
• if you open the tap sharply, a water hammer may occur, which is unacceptable in some systems;
• in heating networks, it is forbidden to use a socket ball valve if the flow temperature reaches 100 ° C, the pressure in the pipe exceeds 16 bar and the pipe width is more than 100 mm.

Please note: Sleeve valves are very demanding for assembly, careless or inaccurate installation can cause sudden pressure surges, deformation of parts and breakage of the entire structure. For this reason, valves should not be installed on pipes with sudden pressure surges.

flanged

A flanged ball valve is a valve whose closing element is shaped like a ball, along the horizontal of which a through hole is made for the passage of a substance. The rotation of this ball along the vertical axis reveals a through hole, in the open position the flow coincides with the ball hole, and in the closed position the hole is perpendicular to the flow.

Used to close the flow of water, steam, oil, air. Suitable for media or flow temperatures above 100 °C and pressures above 16 bar. Usually, flanged valves are used in conditions where couplings can no longer cope due to high temperature or excessive pressure.

If the tap is not turned all the way, then soon you need to wait for precipitation to appear in the product itself. In this case, the tightness is broken and the equipment needs to be repaired or replaced.

The flanged ball valve is assembled from a sealing ring with a hole in the middle, when this hole coincides with the direction of flow, this means that the valve is open. If, on the contrary, the valve is perpendicular to the walls of the pipeline, then the valve is closed.

There are several classifications.

By design, the valve can be of the following type:

• direct-flow;
• through passage;
• mixing;
• angular.

Water flow with ball flanged valves:

• full bore (90−100%);
• standard (70-80%);
• not full bore - (40−50%).

Body metal:

• steel;
• stainless steel;
• brass;
• bronze;
• cast iron.

When choosing ball valve the greatest attention should be paid to the quality of the parts that make up the crane, this is the key to its durability and efficiency. When choosing, find out for which medium it is intended (gas, water), at what temperature it can work.

Only compliance with these rules will allow you to make the right choice, and replacing the taps in the apartment will not bring you problems.

Mounting

You need to use flanges that can withstand this pressure. It is important that the flanges are fixed and placed evenly, additional supports are installed on the crane, which has electric drives. After the installation is complete, you need to check if everything is in order. Through holes must be protected to avoid chips and scratches. Remove the manufacturer's packaging only immediately before installation.

Benefits of using

• long period of use;
• high degree of tightness of flow closure;
• small sizes;
• simplicity and reliability of the design;
• low hydraulic resistance;
• installation in any working position;
• does not require maintenance;
• simple opening and closing;
• cranes that have a collapsible body can be repaired;
• fast closing possible (with manual control).

Flaws

• high price;
• big weight;
• when manually operated needs long handles.

Now you know what ball valves are, their types, what functions they perform, in what environment they can be used. It is reminiscent of the discovery and study of a long-familiar thing. Having become acquainted with all the performance characteristics of this type of crane, you can make a deliberate purchase and correct installation which will allow you to use the product for a long time with comfort for yourself.

Hello dear reader! Among the representatives of shutoff valves, the flanged ball valve stands out as well as for its appearance, and the way of joining communications. In today's article, we will analyze what design it is, how best to use it.

Flanged valves ball type differ from their counterparts in the presence of flanges - round or less common square parts, with the help of which the body of the assembly is attached to the counter flanges of the pipes.

The main function of the valve is to open or block the movement of flow through the pipeline.

Depending on the characteristics, the material of manufacture and the thickness of the walls of the case, it can be installed in systems with contents that differ in their characteristics.

Purpose and scope

As shut-off valves, ball valves have practically ousted valves and gate valves from the market. By virtue of their design, they allow you to quickly block the work flow, including in certain sections of the network. This quality is in demand in emergency situations, if necessary, local repair and other cases.

Use a flange connection where it is difficult to use a threaded or welded connection.

For example, it is difficult to cut high-quality threads into large diameter pipes. Therefore, as a rule, flange structures are installed in industrial and utility networks, in pipelines with a cross section of more than 40 mm.

At home, flange connections are used for mixers, laying water supply systems through submersible pumps.

Submersible pump connection diagram using a flanged valve:

Characteristics

State standards normalize the main sizes and technical specifications device data. They are installed in a single dimensional interval, but have different restrictions, depending on the application.

The main sizes are:

• nominal inner diameter(DU), the range of which is allowed from 15 to 1400 mm;
• construction length.

Technical parameters include:

• the value of the working pressure PN with different restrictions in individual GOSTs from 1 to 10 MPa, up to 250 MPa and above;
• meaning operating temperature or its ratio with the pressure indicator (determined by the manufacturer).

The applicability of cranes to various working environments is set by the developers.

What materials are made from

The raw materials for the manufacture of the body and the shut-off part of flanged valves are:

1. cast iron;
2. brass;
3. carbon and alloy steel;
4. stainless steel.

In the photo, a stainless steel faucet:

Crane device

The crane of the type under consideration consists of a body with flanges, a locking mechanism placed inside it, a manual control handle or another drive.

The locking device includes a polished ball, often chrome-plated or stainless steel, a stem fixed through a spindle with a handle. A slit is made in the sphere, which serves as a through hole.

Principle of operation

When the handle is turned, the ball turns with a slot either towards the walls of the body (closed position) or towards the flow and opens a passage for it through the pipe.

Advantages and disadvantages

Consider the pros and cons of these cranes.

• The main advantage of flanged devices is that the valve can be relatively easily dismantled without damaging the joints, repaired and put back in place.
• Connections through flanges are considered the most reliable with a high pressure of the working medium in the system.
• The crane can be mounted both vertically and horizontally.

Flanged type ball valves also have disadvantages:

• ball valves do not like impurities in the working environment, their sphere begins to wear out and leaks appear;
• for use in everyday life they are quite expensive;
• have a heavy weight, which creates an additional load on the pipeline.

Differences between a crane and a valve

Valves and gate valves were previously widespread. However, the spherical design turned out to be more reliable, easy to manage and operate. Gate valves, for example, require constant care, they are often jammed, they are more massive.

Types and designs

The division of flanged ball valves by type occurs according to the operating conditions and areas of application.

From the point of view of maintainability, the design of the hulls can be:

1. all-welded;
2. two-part;
3. three-piece.

By degree bandwidth distinguish between cranes:

1. full bore;
2. standard passage.

The division by type of management is important:

1. manual;
2. with gearbox;
3. electric drive;
4. pneumatic drive;

Differences

Manual control is standard.

Mechanical gearboxes are installed where a smooth opening of the device is necessary, as well as on taps with a diameter of more than 30 cm.

Electric drives make it possible to control the device remotely, quickly adjust the settings.

Pneumatic drives also allow you to control the object remotely, including in explosive areas where the installation of an electric drive is impossible.

Life time

The duration of stable operation of ball flanged valves is determined by the operating conditions and the material of its manufacture. Often the first to fail are seals exposed to hot temperature network content. According to manufacturers, the mechanical part of stainless steel units can last up to 50 years.

The choice is predetermined by the composition of the working environment and the dimensions of the communication pipes.

The most basic information about the crane is included in the data sheet of the device and is shown on the body marking.

approximate price

The cost of devices of this type depends on the size, specifications and trademark products. Flanged valve with a diameter of 100 mm with a working pressure of 16 bar made of carbon steel, manufactured Russian manufacturer can be purchased for an average of 3,500 rubles. A valve of the same size, but with a stem and a stainless steel ball, a control function and a manufacturer from Finland will cost 49 thousand rubles.

Rules for the installation and operation of the crane

The installers must be familiar with the installation instructions recommended by the manufacturer.

Important to check before starting installation work completeness of the equipment, the absence of any damage and defects.

When installing the tap, check the position of the valve - it must be in the open position.

During operation, the device is regularly inspected, the tightness of flange connections, the cleanliness of the surface of the sphere and seals are checked.

Do not use tools or levers that extend the handle to operate the crane.

Necessary tools and materials

To mount a flanged manual valve, you will need:

• a set of keys;
• ruler for checking alignment;
• pipe cleaning tool;
• armature itself;
• bolts and nuts for fasteners.

If there are no mating flanges on the pipes, welding equipment and flange discs will be needed.

Work progress

• Determine the installation location: it must be accessible for work on maintenance faucet, and have room for a full turn of the handle.
• Pre-attached flanges

products on two bolts to the mating parts of the pipeline.

• Check the alignment of the valve holes and pipes, the coincidence of the bolt holes in the flange disks.
• Install flange seals.
• Tighten the bolts crosswise with the appropriate force.

Installation video

Installation of a manually operated flanged valve:

Operation features

It is necessary to turn the valve handle until it stops, that is, the valve must be open or completely closed. Incomplete rotation of the handle may damage the sealing seats of the valve.

Depending on the design, the valve handle must be turned through certain time, to avoid jamming the sphere.

Common errors and installation problems

Incorrect selection of fittings according to the type of working medium, its pressure and other important parameters.

Violation of the installation rules: errors in the alignment of the valve and pipeline, misalignment of the flanges during installation, which lead to stress and damage to the connection.

Installing defective flanges will quickly lead to leaks.

When choosing equipment, it is necessary to provide for a margin of conditional pressure - the fittings must have a higher rating of this parameter, which is very important for the stable operation of the product in the future.

One of the disadvantages of flanged models is the loosening of fasteners over time and, as a result, loss of tightness. Therefore, it is important to periodically tighten the bolts.

Not so long ago, for the purpose of shutting off and regulating the flow of the working medium of pipelines, valves and gate valves were mainly used.

But, after ball valves appeared on the market, the situation changed radically.

This proved to be so versatile and convenient that the use of faucets soon dropped significantly.

According to the method of connecting the ball valve to the pipeline, these devices are divided into several types:

• coupling;
• welded;
• flanged;
• choke.

Flanged valves are in great demand in the installation of industrial pipelines of various types.

• utility pipelines;
• lines for transporting oil media;
• oil pipelines;
• compressed air systems;
• cooling systems;
• shipbuilding;
• Agriculture.

A feature and advantage of flange-type ball valves is high reliability and. A plus is also the easy installation and dismantling of flanged valves, which allows, if necessary, to quickly replace a failed product or install it in another place.

The central structural element of a ball valve is a ball valve, inside of which there is a round and square hole. The shutter is fixed inside the body of the product using a whole combination of clamps and gaskets. It is connected to a lever, which controls the flow of the working medium of the pipeline. In one position of the lever, the passage is open, and in the other it is completely closed.

AT this moment Since then, flanged valves have been produced with a very wide range of sizes - from 15 to 1400 mm, but more often they are used on pipelines with a diameter of 50 mm or more.

Depending on the diameter of the shut-off valve, the locking ball can be positioned in two ways:

• be floating - in devices of small diameter;
• be sealed on supports - with a crane diameter of 50 mm or more.

All types of flanged valves are different high strength and are designed to work under heavy loads.

According to the possibility of performing repairs, products are divided into two types:

• Non-separable taps - have a cast body, in case of loss of functionality, it is required complete replacement faucet for a new one.
• Collapsible cranes - their body consists of two parts, so it can be easily disassembled, allowing.

Also, ball flanged valves are divided according to the type of drive used during operation into:

• products with a manual gearbox - standard products;
• (requires the use of additional supports);
• pneumatic valve.

According to the degree of passage of the working medium, flanged valves are divided into three types:

• incomplete bore (up to 50%);
• standard (from 70 to 80%);
• full bore (from 90 to 100%).

• cast iron;
• steel;
• stainless steel;
• bronze;
• brass.

Flanged valves cannot be used to control the flow of a medium, they are used where it is necessary to either completely shut off the flow or completely open it.

When performing installation work, it is necessary to take into account such parameters as:

• crane control type;
• pipeline type;
• direction of pipeline laying (horizontal or vertical).

The installation of shut-off valves requires the following steps:

• Before installing the crane is necessary.
• The pipeline and the valve are checked for alignment.
• The valve is installed between pipeline flanges using seals.
• Before installing the fittings, axial alignment is carried out - high-quality installation requires compliance with the most even tightening of the bolts around the perimeter of the flanges.

During operation, you must follow the following simple rules:

• Regularly conduct technical inspections of valves (the frequency is determined by the specific operating conditions of the valve). But in any case, the period between examinations should not be more than 6 months.
• If the valve almost constantly works in any one position (closed or open), then it is necessary to periodically open or close it. This prevents the formation of deposits on the surface and increases its service life. Such prevention is carried out 2-4 times a year.

The efficiency of the design of these products provides the following benefits:

• reliability of a design practically does not require maintenance;
• complete blocking of the flow;
• low hydraulic resistance to the flow of the working medium;
• possibility of installation in any position;
• ease of use (closing - opening);
• in the case of a manually operated valve, the flow can be shut off as quickly as possible;
• high maintainability of products with a collapsible body;
• long service life.

Among the disadvantages of flanged valves are the following:

• manually operated valves have rather long levers - this requires free space when installing the product on the pipeline;
• flanged valves have significant weight;
• compared to other ball valves, flanged ones are relatively expensive.

Thus, flange-mounted ball valves are widely used in pipelines of various types.

• they cannot be used in those lines where the fluid flow has impurities solids- this inevitably causes abrasion of the crane running gear, and then;
• you should not use these products in cases where you need to block the flow of a viscous, viscous or silty liquid - the likelihood of sedimentation is too high, which over time will lead to failure of the tap;
• do not use the valve with a partial opening to regulate the flow of fluid.

Flanged valves can also be used for domestic purposes, but still their main purpose is industrial pipelines.

Flanged has found wide application in many areas. For example, it can be seen on pipelines used in gas, oil, chemical, food industries, as well as in other areas. The steel flange ball valve is used in the transportation of oil products, hydrocarbons, liquids and gases as shutoff valves. In addition, this device has found widest application in areas such as ventilation, water and gas supply. It is also actively used in agriculture and shipbuilding. This device is designed to shut off the flow or to release it into the pipe. flanged is also used in steam supply, as well as when working in temperature conditions up to 250 degrees Celsius.

It cannot be used for throttling. This type taps cannot be used to adjust the flow pressure of the shut-off device. This is due to the fact that such devices have only two states: fully closed or open. These devices use a ball as a locking part, which is why they got their name. Valves are made from three types of materials, the choice of which depends on the intended working environment. Stainless steel is designed to function in the corrosive; st.20 is designed to work in normal conditions; 09G2S - for sulfur version. It is unacceptable to use a flanged ball valve in pipelines where there is a possibility of the flow of untreated liquids with solid impurities. This can cause abrasion of the chassis, and then leaks. Do not use this type of device as shut-off for silty, viscous or viscous liquids. There is a high enough risk of sediment, which can adversely affect the time useful application devices. The rules for the use of this type of equipment prescribed in the instructions should be strictly observed. The load must not be increased on the crane; it should not be used as a flow force regulator when partially opened.

Steel flange can have certain design features. The first type has a locking part that is not connected to the spindle. In relation to it, the spherical element moves freely. When medium pressure is applied to the ball from the inlet side, it is pressed against the sealing element, providing sealing and blocking the flow. This design can be used with a diameter not exceeding two hundred millimeters. This choice of dimensions allows to reduce the load that is created by the locking element in relation to the sealing ring.

The flanged ball valve of the second type assumes that the ball is on supports. The locking product in such structures is mounted due to the presence of an axial protrusion. When pressure is applied from the saddle side, a spherical shape is pressed against the support. This design of the ball valve allows you to reduce the force required to lock or unlock it.

Retail prices for flanged valves 11s67p:

Flanged valves 11s67p with gearbox

Purpose: steel flanged ball valves 11s67p are installed on the pipeline as a shut-off device to completely shut off the flow of the working medium.

Working environment: water, steam, gas, oil, oils, oil products, other media neutral to the materials of the crane parts.
Working environment temperature: from minus 40ºС to 180ºС (for steam up to 250ºС).
Rated pressure: 1.6 (16); 2.5 (25); and 4.0 (40) MPa (kgf/cm²).
Connection to the pipeline: flanged.

Main parts material:
Body, pressure bushing, handle - steel 20 (09G2S in climatic version HL1).
The ball is stainless steel 12X18H10T.
Spindle - steel 20X13 (14X17H2).
Sealing ring, spindle seal - fluoroplastic F4K20BR20.
Stud, nut - steel 35.

Shutter tightness: class A according to GOST 9544-2005.
Manufacturer: LLC "Lugansk plant pipe fittings"MARSHAL", Ukraine.

The main overall weight characteristics of flanged valves 11s67p:

Flanged ball valves are installed on the pipeline in any position, regardless of the direction of the medium flow. The crane is controlled manually by turning the lever 90º to the stop or with the help of a gearbox by rotating the handwheel. The position of the lever is an indicator of the opening-closing of the tap. In the open position, the lever is located along the axis of the pipeline. In the presence of a reducer, the position of the locking ball is controlled by the pointer. Flanged ball valves must be fully open or closed during operation. It is forbidden to use a ball valve as a control valve. During installation on the pipeline, the valve must be in the fully open position. Flanged valves 11s67p do not require special maintenance. It is recommended to open and close the valve several times a month to prevent the formation of deposits on the surface of the ball.

The warranty period for flanged valves is 18 months from the date of commissioning, but not more than 30 months from the date of shipment by the manufacturer.