Electric control valves - purpose and varieties. Shut-off and control valves with electric drive: ready-made solutions from RU100 Principle of operation and technical characteristics
The valve is the most popular type of shut-off and control valves, both for domestic use and in various industries.
The two-way control valve is widely used in heating systems, water pipelines, gas pipelines, shipbuilding and production lines.
Types and features
Features of the operation of control devices very often require the possibility of their full-fledged operation without direct human intervention, it is then that they are used electronic devices(a valve with a pneumatic actuator that allows remote control of the actuator, in other words, electric actuators.
These are mechanisms equipped with a special electromagnetic control unit connected to the network, which allows you to convert electricity into mechanical force, which is transmitted to the reverse locking mechanism of the device, opening and closing it.
Consider the main types of devices equipped with electromagnetic drive, depending on the scope of their application
Actuated air valve. Such a valve is installed for exhaust and flow ventilation systems, where it performs the function of adjusting the amount of air supplied to ventilate the room.
And also, in the event of a fire hazardous situation, overlapping it, and not getting smoke from the room into the ventilation.
A check valve with an electromagnetic drive for ventilation, based on the design features, can belong to one of two main categories: throttle or reverse. Depending on the shape of the air duct on which the air throttle will be mounted, it can have a square or cylindrical shape.
The complete set of such devices with an electromagnetic drive is necessary condition, since they are installed on hard-to-reach places ventilation system, which requires an automatic remote control on the air gate.
The air damper drive makes it possible to instantly close the damper during a fire, as well as to adjust the intensity to the air flow.
In the event of a power failure, the actuator returns the gate lock mechanism to a pre-programmed position.
Gas flange valve- this is the view pipe fittings, the main function of which is to block the passage of the gas pipeline, as well as the distribution and regulation of its working environment.
The conditions of use necessitate the installation of only a flanged motorized valve in most cases. Basically, only simple devices for domestic use are not supplied with them.
While flanged devices, which are used on gas pipelines, heating systems and industrial facilities, require accurate and fast remote adjustment, which makes electric drives indispensable.
Gas valves are divided into the following categories:
- two-way non-return valve with pneumatic drive;
- four way.
The difference between them is the number of holes present on the structure. On a two-way valve, as the name implies, there are only 2 holes - inlet and outlet.
Whereas in the 3-way and 4-way, there is 1 hole for the inlet, and, accordingly, 2 and 3 for the outlet, which allows them to be used not only as shut-off valves, but also as distribution valves.
Principle of operation and technical characteristics
Consider the principle of operation of a device with an electric drive using the example of a two-way valve.
All mechanisms of this type have the following modes of operation:
- the pipeline is blocked;
- nominal flow (voltage is applied to the flanged valve, after which it, by means of a mechanical stop, drives the damper, the position of which sets the required level of gas supply);
- intermediate mode (This is a limited mode in which the gas flow rate is about 10-50 percent of the nominal flow rate. To enable this mode, voltage is applied to the electromagnetic coil of the drive, after which the shaft of the control mechanism is activated, while the fastening of the drive clamp to the damper shaft is loosened ).
If no further settings are made, the flanged gas control valve c uses nominal flow as standard operating mode.
In this case, the damper, when opened, stretches the return spring, which, in the event of a power outage, is assembled and returns the damper to the closed position.
The motorized fire damper is a device whose use is subject to regulations fire safety, which plays an important role in preventing the spread of fire and combustion products (smoke, carbon monoxide, etc.) through the ventilation system.
Such valves are installed for ventilation ducts, or in between-wall ceilings. Since the safety of people directly depends on fire-fighting samples, the most stringent requirements are put forward for them.
According to GOST RF 53301, the electric drive of the fire damper is a prerequisite for its certification. This is due to the fact that in the event of a critical situation, the valve must immediately close automatically and without human intervention.
Timely operation of this fire fighting device allows you to significantly minimize the risk of development and expansion of a fire, since the closed valve limits the access of oxygen to the source of ignition and, at the same time, does not allow smoke and fire to spread to neighboring rooms.
Among valves for water supply systems, electric actuators are mainly equipped with devices for industrial use in boilers, heating stations and municipal water supply systems.
AT domestic use mechanisms with electric drive are not particularly in demand, since their functions are mainly performed by a cheaper flange valve with mechanical control.
Only the membrane check valve is widely used, which is a necessary device for the safety of the entire system, as it automatically protects it from water hammer and pressure drops.
It is worth noting that the diaphragm check valve with a drive is also distinguished by an increased price, although for this money you get a really high-quality device with a bunch of useful functions.
Rules for installation and operation of the device
Despite the fact that electric valves are unified devices, each of them has its own certain features. So we recommend that you carefully study the instructions that come with the device you purchased (changeover, membrane, etc.) before the installation process.
According to quality standards, all parts are tested for design flaws and malfunctions immediately after production is completed.
Therefore, you can be sure that when buying a flanged changeover or membrane mechanism from a trusted manufacturer, you will not encounter unpleasant surprises, but you can immediately start installing it.
Basic rules for valve installation:
- The direction of the flow of the working medium must necessarily correspond to the direction of the indicator applied to the body of the product;
- The diaphragm or rotary valve must be installed in a place where there will be enough free space for free access to it in the future. Also, in the event of a power outage when the motor is not running, you should be able to operate the mechanism normally by manually adjusting the shutter.
- The changeover valve must be installed on straight sections of the pipeline;
- At the inlet to the changeover valve, it is necessary to install a protective filter that will protect the device from mechanical debris;
- It is not recommended to use adapters near the valve that narrow standard diameter pipeline, as this increases the risk of water hammer;
- It will not be superfluous to have a hydraulic damper at the inlet;
- Be sure to check all connections for tightness, since even minimal water leaks and its subsequent entry into the electric drive control unit will quickly disable it;
- The control unit must always be located on top of the pipe it is installed on, unless otherwise specified in the instructions.
During the operation of the device, it is necessary to carry out its regular inspections for tightness and serviceability, the presence of contamination and mechanical damage to the structure. Only the timely elimination of all of the above factors guarantees the valve long term services.
Drive setup (video)
Market analysis shows that the price of a valve primarily depends on the features of its design. For example, simple valves for home use cost much less money than professional devices.
Also, their cost depends on the scope of application, the most expensive are valves for gas equipment, the cheapest ones are samples for water supply systems.
So, the average price of a fire damper made of high-quality stainless steel with a diameter of 200 mm is about $120. A pneumatically actuated control valve for plumbing will cost you a minimum of $35-$40.
In terms of high-quality components, Belimo valve actuators start at $70 for starter models for control valves, while a technically advanced ventilation actuator with wide functionality costs at least $100.
Complexity engineering systems increases every year, the requirements for their energy efficiency, reliability, safety are increasing, which dictates the use of modern pipeline valves, primarily regulating ones.
In this article, we will consider the main types of control valves that play an important role in solving the above problems, as well as analyze some of the features of control valves supplied by ADL with PS-Automation (Germany) electric actuators.
Control valves direct action, as you know, to regulate the parameters of the flow of the working medium in a certain section of the technological system or pipeline, it uses the energy of the same medium. Due to this, the advantages of this type of valve are: independence from external energy sources, control accuracy, as well as reliability. However, there is also a drawback, which often greatly complicates and limits the use of direct acting regulators - this is the lack of flexibility. In other words, each regulator is designed to be used over a very narrow range of system parameters. For example, if we are using a direct acting pressure regulator to control an outlet pressure of 5 bar, then to change the setting to, say, 10 bar (all other parameters are the same), we will most likely need a completely different valve.
Meet the following types direct acting regulators:
- pressure reducing valves (downstream pressure regulators) designed to maintain a constant outlet pressure regardless of changes in inlet pressure or flow;
- bypass valves (upstream pressure regulators), which maintain a constant pressure in front of the valve by bypassing part of the medium;
- differential pressure regulators, which serve to maintain a constant pressure differential between two setpoints in the system;
- special regulators (following pressure regulators, hydraulic shock absorbers, etc.)
Control valves indirect action on the contrary, it uses external energy, for example, electricity (electric drive), compressed gas energy (pneumatic drive), etc. The control signal for such regulators is also external. The signal comes from a logic device that directly implements the control algorithms in the system. Indirect control valves thus provide much-needed flexibility. For example, to control different pressures or even to control other parameters, in some cases, the same control valve with an actuator can be used. Of course, systems using indirect-acting regulators are much more complicated than systems using direct-acting regulators, which often negatively affects both the speed of regulation and reliability indicators. However, modern electric drives make it possible to eliminate these shortcomings. Such electric drives include, in particular, drives manufactured by PS-Automation GmbH (Germany), exclusively supplied to the Russian market by ADL.
So, linear electric actuators are used to control control valves. Let's take a closer look at the features of linear electric drives of the PSL and PSL-AMS series manufactured by PS-Automation (Germany).
The PSL series actuators are designed in a modular way, which allows you to get maximum functionality at minimum cost. PSL actuators meet all the requirements for control valves: precise positioning, robustness, reliability and durability, even under high loads. The basis is a standard actuator with three-position control and the necessary set of protection functions. At the same time, the characteristics of the drive can vary greatly depending on the installation of additional options. For example, installing a positioner and potentiometer board on the actuator allows the actuator to be controlled by an analog signal (eg 4…20mA, 2-10V, etc.). In accordance with the tasks of the customer, ADL specialists modify the electric drives of control valves, make the necessary adjustments and testing. An important advantage is that the functionality of the drive can be changed after it has been delivered and even installed in the system. Most drive options can be purchased separately, including:
- positioner with active output signal;
- potentiometer;
- position signal converter;
- additional limit switches;
- heating resistor, etc.
To increase the reliability of the system, PSL electric drives are equipped with the following protection functions:
- automatic shutdown of the drive when the end position is reached;
- automatic shutdown of the drive when the maximum linear force is reached;
- automatic shutdown of the drive at the risk of overheating of the motor windings;
- the ability to determine the positioning in the event of a break in the supply or control network; Moreover, this position (normally open, normally closed, current) can be changed directly on the pipeline using a switch.
- manual doubler.
Intelligent linear actuators of the PSL-AMS series have improved electronic circuits Microprocessor-based with memory card for reliable and precise control, as well as simple commissioning and easy adjustment.
Electric current and voltage monitoring functions allow you to customize the operation of the drive for specific system conditions. Thus, through the special communication software PSCS (supplied as standard), you can set various options drive operation, corrective data, diagnostics and much more.
PSL-AMS series smart electric drives also have a number of additional options such as: a local control function on the housing that allows you to configure the operation of the drive at the installation site, as well as block access to its control, an integrated PID process controller that monitors and controls the set operating parameters with the ability to program any non-standard drive behavior, intelligent protocols control (HART, Ethernet, Bluetooth, etc.), etc. 
All of the above series of linear electric actuators have an IP65 or IP67 protection class and can be manufactured in a metal case.
PS-Automation electric actuators are successfully used by ADL to complete control valves of its own and European production. The range of control valves is represented by two-way single-seated (both balanced and unbalanced design) and three-way valves in the range of diameters from DN 15 to 300 mm, pressures from PN 16 to 40 bar, for media with temperatures up to 300 °C.
It should be especially noted that the installation of the electric actuator on the control valve, its adjustment and testing are carried out at the production complex of our company, which guarantees operability, minimum delivery time, and also allows us to manufacture a special version of the control valve for the requirements of a particular system.
Below we present only the most basic characteristics of control valves supplied by our company.
- Valve capacity: 1.7…1030 m3/h;
- Body material: brass, cast iron, carbon steel, stainless steel;
- Drive supply voltage: 10, 24, 110, 220, 380V;
- Control signal: three-position, analog, HART, etc.;
- Linear drive force: 1.000…25.000 N;
- Temperature environment: -40..+80°C;
Control valves of both direct and indirect action from the ADL Company have many years of experience in operation at housing and communal facilities, and are successfully used by leading enterprises in various industries. Among the objects where our control valves are installed are: the complex of high-rise buildings "City of Capitals" of the business center "Moscow-City", the Cathedral of Christ the Savior, the Reutov heating system and many others.
(PDF, 441.79 Kb) PDF
The control valve is almost an automatic element in modern pipelines, mainly equipped with a mechanical drive.
Valves are designed to control the state of the working medium in the pipeline, adjust the amount of liquid, pressure level, etc.
It is reasonable to use valves with pneumatic actuators or electric actuators in large pipelines, where enormous loads act on individual components of the system. The advantage when choosing such products is given by industrialists and entrepreneurs; in civil engineering, a valve with an electric drive is much less common.
Article content
Purpose and features
The valve in its structure and purpose is in many ways similar to standard stopcocks. But they have much larger dimensions and perform a wider range of tasks.
The simplest option is shut-off, it simply blocks the flow, that is, it allows you to stop the movement of the carrier through the pipes at any time. The difference between an industrial crane and a crane is in size and principle of operation.
While in civil engineering preference is given to ball mechanisms, spools and are used in industrial valves.
They also allow you to adjust the flow force, reduce or increase it if necessary, reduce or increase the pressure. For civilian water supply systems, such areas are not interesting, there are simply no such serious loads, at least in side branches where ordinary people have access.
Another thing is industrial pipelines, capable of transporting a wide variety of liquids, ranging from ordinary pressurized water to oil.
Actually, the task of the valves comes down to adjusting and monitoring the performance of a particular branch. That is why practically - regulating.
There are, however, other solutions combined with different directions. There are shutters designed to work exclusively with pressure, controlling, etc. All of them are designed for their range of tasks and directions.
Control and use of drives
If the sample in question is regulating, then, in fact, it needs to be regulated somehow, for which handles or valves were invented. The valve handle is an enlarged copy of the handle stopcock on any pipe. Except that in civil pipelines, handles in taps can only be in two positions.
Valves are different. If, that is, it can be in different states, then its handles should give you the opportunity to make this very adjustment.
Most often, the handle rotates around its axis, allowing the locking element such as a valve or spool to be moved from a fully open position to a fully closed position.
We have already specified above that the valves it is reasonable to put only on industrial pipelines, and in industry, dozens of such devices can be installed on one branch. Obviously, twisting them all by hand is hard and thankless work.
Fortunately, the engineers found a reasonable solution - by equipping it with a mechanical drive.
The valve with a servo or electric drive can be adjusted remotely. You do not have to turn the handle yourself; for such tasks, the drive mechanism itself is used, usually remote.
He can be:
- or electric;
- pneumatic.
The advantage of using an electromagnetic drive is its simplicity, ease and efficiency. With an electromagnetic actuator, the valve becomes a modern locking mechanism capable of receiving remote commands or shifting the position of the valve by pressing one or more buttons.
Moreover, the presence of an electric drive allows us to install automation on the parts, which will itself assess the pressure level, the amount of fluid passing through, and then either transmit the data to the decision-making center or independently change the position of the locking elements.
The main working element is an electric engine.
They can be started manually or with the help of a relay, however, it only starts the mechanism, and the displacement of the locking element itself is carried out by a pneumatic drive.
Pneumatically actuated valves are cheaper, but they last longer and are not as fine in terms of adjustment.
Types and differences
Modern ones can work both on electricity and on pneumatics or servo drives. In the simplest versions, they are completely regulated manually. However, they differ not only in the presence or absence of drive mechanisms.
There are also differences in the adjustment system, design, etc. For example, by type of working mechanism sample occurs:
- saddle;
- membrane;
- spool;
- shut-off;
- back.
Seats work by shifting plungers and saddles that open or close the flow path.
The diaphragm valve is distinguished by a complicated system. The membrane sample in its work uses a special membrane mainly made of rubber.
Spool mechanisms are able to perform their tasks thanks to the spool, which moves from one position to another. The spool valve is one of the oldest and most reliable, now it is quite rare in the industry.
The locking element is rather a separate subspecies of such products. The presence of the prefix "shut-off" means that the sample allows you to completely block the flow of the carrier in any direction.
Allows the wearer to pass in one direction only.
Control valve design overview (video)
There are also solutions on the market that are not used in pipelines, but at the same time have all the properties and characteristics of valves with actuators. A striking example is the flip mechanism. The rotary valve is designed for use in agriculture. The task that the toggle mechanism performs is simple and concise. It regulates the process of unloading and supplying grain at enterprises related to agricultural land cultivation or animal husbandry.
The toggle mechanism is equipped with a drive, so every time the need arises, a person does not have to turn the knobs or valves on his own, just press the button and the toggle drive will change the direction of the grain supply.
Connection type
The type of connection is distinguished sample:
- flanged;
- welded.
The flange option is the most convenient for industrial connections. The flange type of connection allows you to mount any parts on any pipes, as long as their nominal diameters correspond to each other. Doesn't matter whether it's reverse sewer valve or a device for automatic pressure level control, in any case, it is the flange type of connection that is best suited for its installation.
It is undesirable to use a welded type of connection when it is necessary to mount a reverse mechanism, removable models and valves. Welding gives excellent tightness at the expense of mobility.
Hello dear reader! In industrial pipelines, through which a huge flow of liquids is constantly moving, it is necessary to regulate this movement by reducing or increasing the flow rate, the pressure in the pipes. In such cases, an indispensable role is played by a shut-off and control valve with an electric drive. In our article, we will consider its types and characteristics, connection methods, rules of use, and get acquainted with the advice of specialists on the installation and operation of the unit.
Stopcock with various types actuator is a device with which you can completely or partially block the moving flow of fluid in the pipeline.
A feature of the design with an electric drive is that it allows you to perform these actions remotely, almost anywhere on the highway.
Purpose and scope
Control valves allow you to automatically control at a distance the process of regulating the flow of fluid, the pressure force in pipelines.
They are used in large trunk, technological and utility-network channels through which the medium is transported.
Electric drive devices can be both shut-off, with the function of only completely closing the pipe, and with the function of regulating the flow strength by completely or partially suspending it.
Control and specifications
The valve is controlled by linear movement of the stem with a plunger. The device is started by pressing the start button on the remote control. Under the action of an electric current, the actuator transmits force to the plunger. That, moving up and down, changes the cross-sectional area of the through hole.
The main technical characteristics of shutoff and control valves are:
- the value of the nominal pressure in the system that the device can withstand;
- the size of the diameter of the conditional passage in mm;
- conditional capacity in m3/h;
- temperature limits at which the unit functions normally;
- mains voltage intended for the electric drive.
Connection type
According to the type of connection, shut-off and control devices are divided into
- flanged,
- choke,
- coupling,
- tsapkovye,
- welded.
The first option is the most preferred. As a rule, valves of this type are already equipped with flanges. They are used in networks high pressure. Through the flange, the unit can be attached to any pipes suitable for the size of the nominal passage. It also does not depend on what type of device will be connected.
Device
The simplest control valve consists of a body with flanges, in which there is a seat, a stem with a plunger at the end and a sealing assembly responsible for sealing all shutoff valves.
When the plunger covers only part of the orifice, the water flow in the system decreases. The plunger tightly lowered into the saddle blocks the flow, the pressure in the pipe after the valve drops to zero.
If domestic pipelines are used Ball Valves, then in the highways industrial use and utility networks, preference is given to spools and gate valves with an electric motor.
Principle of operation
The principle of operation of the valve with an electric drive is much similar to the operation of a conventional valve. Distinguish their way of management and functionality.
According to the principle of operation, devices blocking, mixing or separating the main flow are distinguished.
Shutoff units include two-way saddle valves, which are widely used in public heating networks.
For mixing and flow separation, three-way options are used, which have three nozzles for connecting to the main.
Types and differences of designs
Valves according to the drive device are divided into controlled:
- manually;
- electric drives;
- pneumatic actuators;
- in an electromagnetic way.
According to the locking mechanism, the structures are divided into:
- shut-off, designed only to shut off the medium;
- membrane, with a rubber membrane in the housing, adapted for operation in gas networks;
- reverse, closing when the direction of flow changes;
- spool valve, which regulates the flow rate by moving the movable spool;
- saddle, with linear movement of the stem with a plunger, closing or opening the path for the flow with the help of saddles.
Advantages and disadvantages
The advantages of a pneumatic actuator are its affordable price; devices with such control are cheaper than electrical counterparts.
Solenoid actuated valves make the process much easier remote control environment on a long section of the highway, allow the introduction of an electronic control system.
The device itself will be able to take accurate indicators of the state of the same coolant in pipelines, transmit information to the operator about the pressure level, the amount of liquid in the stream, and even reset the positions of the locking parts of the structure.
However, the price and complexity of the devices will increase.
The optimal choice of device should ensure high accuracy in regulation. There are many factors to consider in order to make the right decision to purchase a unit.
When choosing fittings, pay attention to:
- product marking, which indicates the throughput and nominal pressure for the device;
- terms Maintenance device, whether it is possible to repair it without removing it from the line;
- is it possible to change the throughput of the device;
- Availability structural elements in a device that reduces the amount of noise.
Rules for installation and operation of the device
Before installing the apparatus, check the fasteners, the inside of the valve and the pipes of the line to identify and remove foreign particles. If necessary, the device is washed and purged.
After installation, the device is checked for operability.
During operation, it is necessary to periodically, at least twice a year, inspect the device and carry out routine maintenance.
Check the general condition of the device and its fasteners.
All work with the solenoid valve must be carried out, guided by the instructions attached to it.
Necessary tools and materials
You will need the following set of tools:
screwdriver with appropriate nozzles;
- screwdriver;
- pliers;
- flush hose.
Materials:
- a set of bolts;
- copper tubes for wires;
- electric wire.
Wiring diagram
Classic installation scheme for a two-way control valve
Work progress
When installing flanges, make sure that there are no distortions. Do not use excessive force when correcting the misalignment, otherwise you can deform the flanges of the device housing.
During installation, strictly ensure that the arrow on the body coincides with the direction of flow.
After installation, the device is opened, thoroughly washed and blown.
Check the sealing of the joints and the stem sealing assembly.
The operation of the device is checked by connecting to the mains. The valve must operate five times for full speed without medium supply. All parts should move easily and without jerks.
Common errors and installation problems
Acquisition of a product with an overestimated conditional passage (DU). A throughput higher than the rated capacity will negatively affect the accuracy of regulation.
When choosing a valve with a reduced nominal passage, it will not be able to give the desired steam flow at the set pressure indicators. This will lead to the fact that the pressure and temperature of the medium in the pipe after the locking device will become lower than the values \u200b\u200bthat are necessary for the normal functioning of the heating network.
Non-observance of technology during the installation of fittings.
These errors can cause instability in the operation of the control system and lead to a malfunction of the valve and the electric drive.
In steam pipelines, a condensate trap must be installed in front of the control valves, which ensures the timely removal of condensate.
During the installation period, it is impossible to weld on the pipeline with installed valve so as not to damage the seals.
The pipeline can be protected from undesirable consequences of water hammer by a system of check valves, in which a steel disk is a locking element. They are installed by means of flange connections at certain intervals, which makes it possible to effectively resist water hammer.
Shut-off and control valve 25ch945p with an electric actuator REGADA type is a regulating and shut-off actuator designed to automatically control the flow of media non-aggressive to the materials of the valve parts, as well as to completely shut off the flow in heat supply systems, hot and cold water supply, ventilation and other technological systems.
KZR 25ch945p is controlled by electronic controllers such as TRM-12, TRM-32, etc.
Specifications
Ambient temperature – from 5ºС to 50ºС
Relative air humidity - from 30 to 80% at a temperature of 35ºС
Nominal pressure, Ru -1.6 MPa
Controlled medium – liquid and gaseous media, non-aggressive to the materials of the valve parts
Temperature of the regulated medium: from -25 to +150ºС
Tightness class -A (no visible leaks) GOST 9544
Flow characteristic -linear
Connecting dimensions and dimensions of sealing surfaces - execution 1 row 2 GOST 1281
Position and mounting method
The ZRK 25ch945p valve is installed in any position, except for the electric drive under the valve. In a place convenient for maintenance and inspection. With an inclined arrangement of the valve, supports should be installed under the EIM
Guarantees
The warranty period of operation is 12 months from the date of commissioning.
The conservation period is 5 years.
Service life - not less than 10 years.
MTBF - 100,000 hours.
Advantages of KZR valves:
ensuring accurate regulation in the system
combination of shut-off and control functions
application is simple and robust design shutter assembly
use of a stuffing box assembly that does not require service maintenance
maintainability, the possibility of post-warranty service
Principle of operation:
The regulation of the flow of the working medium is carried out by moving the plunger relative to the seat and thereby changing the throughput of the valve according to the signal sent to the EIM. The force developed by the EIM is transmitted to the plunger, which moves up and down, changing the area of the open bore of the seat. The tightness of the valve relative to the external environment is ensured by a gasket and stuffing box seal
Valve main parts material
valve body - gray cast iron SCH20 GOST 1412
Plunger - stainless steel 40X13 GOST 5949
Seal on the plunger - Fluoroplast F4 K15M5
Saddle - brass LS59 GOST 5527
Packing gland assembly - fluororubber GOST 9833 (rubber group 6)
To order, you must inform Du and Kvy.
|
Shut-off and control valve (KZR) 25ch945p single-seat flanged with EIM according to TU 3722-011-50987615-2002 |
||||||
| DN, mm | Ru, kgf/cm2 | Conditional capacity Кvу, m3/hour | Working environment | Working environment temperature, °С | Construction length L, mm | Weight, kg |
| 15 | 16 | 0,1; 0,16; 0,25; 0,4; 0,63; 1,0; 1,6; 2,5; 3,2; 4 | Liquid and gaseous media, neutral to the materials of parts in contact with the medium | up to +150 | 130 | 10 |
| 20 | 1,6; 2,5; 4; 6,3 | 150 | 12 | |||
| 25 | 1,0; 1,6; 2,5; 3,2; 4,0; 6,3; 8; 10; 16 | 160 | 15 | |||
| 32 | 6,3; 10; 16 | 190 | 18 | |||
| 40 | 10; 16; 25; 40 | 200 | 20 | |||
| 50 | 10; 12,5; 16; 20; 25; 32; 40; 63 | 230 | 22 | |||
| 65 | 25; 40; 50; 63; 100 | 290 | 34 | |||
| 80 | 40; 50; 63; 80; 100; 160 | 310 | 44 | |||
| 100 | 63; 80; 100; 125; 160; 250 | 350 | 67 | |||
| 125 | 100; 160; 200; 250; 320 | 400 | 92 | |||
| 150 | 160; 250; 400 | 480 | 110 | |||
| 200 | 250; 400; 630 | 600 | 140 | |||
| 250 | 500; 800; 1250 | 730 | 200 | |||
| 300 | 1000; 1250; 1600 | 850 | 315 | |||
| Throughput characteristic - linear | ||||||
