Electric shut-off valve for steam. Control valves
Among the devices used to create piping systems, special place is occupied by control valves. It is a type of valve used to control the working environment. Control concept in in this case implies:
- regulation of medium consumption;
- mixing of media passing through the pipeline in the right proportions;
- maintaining the pressure in the pipeline at the required level;
- liquid level regulation.
Features of control valves
The use of quality pipe fittings is a prerequisite safe work the entire system. Regulating devices are usually installed in those sections of the pipeline where there is a branch or bend. Thanks to special valves, the flow can be shut off in a timely manner, which prevents Negative consequences accident or other problem.
In the ADL catalog you will get acquainted with a large assortment of devices, the use of which greatly facilitates activities in important industrial areas: from food to oil and gas. There is also equipment designed for tying fittings.
Control valves are installed on various water pipes, both industrial and domestic. In addition, no one can do without it. pumping station or a fire fighting system.
The important advantages of such fittings are:
- high level of reliability - products resist high loads over time;
- the choice of diameters is large enough, which guarantees you the opportunity to choose an instance for each specific case;
- resistance to corrosion - constant exposure to water and other media will not cause disturbances in the operation of the valve;
- durability - the service life is calculated for many years;
- and ease of care and maintenance. You only need to install the product in Right place and it will perform its function without the need to constantly check its functionality.
ADL company is one of the famous manufacturers industrial equipment in Russia and neighboring countries. Only perfect fittings quality!
Control valve types
Control valves by type of connection
Control valves by control type
Control valves by body material
Popular categories:
- Steel flanged control valves
Main areas of application: steam, CO2, water, compressed air - on most non-flammable and non-aggressive liquid and gaseous media.
What are pressure regulators for - bypass valves and pressure reducing valves to regulate downstream pressure?
There are a lot of heat energy consumers at the enterprise, some need a pressure of 2 bar, others 4, and a third 8, but steam always has to be produced with maximum parameters, and only then the pressure must be reduced to the required value. Pressure regulators are not only pressure reducing valves but also by-pass valves, but by-pass valves are not commonly used in steam condensate systems.
The pressure reducing valve is
pressure regulator After myself, the main purpose is to reduce the pressure after itself and maintain it at a certain level (in the area after itself), regardless of pressure surges before the regulator (at the entrance to it). Pressure surges are caused by changes in steam consumption, and the pressure regulator maintains a constant pressure level.The bypass valve is a pressure regulator DO itself, is used much less often than a pressure reducing valve, is practically not used for steam. Bypass valves are most commonly used for bypassing pumps. When the pump delivers too much pressure, the bypass valve takes this excess pressure back to the suction (bypass pressure), this system saves the pump.
3 main types of pressure reducing valves for steam
from simpler to more complexbellows type(for example ADCA PRV25)
It has a flexible metal bellows inside with a relatively small area, as a result of which the bellows pressure reducing valve is considered the least sensitive, suitable for coarser pressure regulation after itself. If the flow rate of steam passing through the valve during operation does not change significantly, the bellows-type pressure reducing valve will cope quite well. Due to low accuracy and sensitivity, this valve is produced only in small sizes DN 15-20-25. One of the disadvantages of this valve is the relatively small throughput... The main plus is a simple design.Pressure regulator behind membrane(e.g. ADCA RP45)
There is a rubber diaphragm inside the metal plate, the area of the diaphragm is much higher than on the bellows pressure reducing valve, hence the higher sensitivity and relatively greater accuracy of maintaining the pressure after itself. A very common type of pressure reducing valves, capable of working in systems with high dynamics of change in steam flow, in comparison with a bellows valve, a diaphragm valve has a higher throughput - this is also a significant plus. An extremely durable type of pressure reducing valves, if the filter is correctly installed in front of the pressure reducing valve, even a rubber membrane in it can work for more than 10 years.Pressure regulator behind pilot(for example ADCA PRV47)
The main trump card of the pilot pressure regulator after itself is the highest sensitivity and accuracy of regulation.The most advanced design, the most accurate pressure regulator, but at the same time the most "gentle". This valve is equipped with a piston drive, there are many small holes in the design, as a result, the valve is very sensitive to the quality of steam. Under no circumstances should such a pressure reducing valve be installed in a system with high level mechanical impurities in steam, it is recommended to use it with stainless steel pipelines or install a fine steam filter (fabric), this is the only way to ensure long-term operation of such a valve
Selection of the pressure regulator
The downstream pressure regulator is always installed of a smaller size than the main pipeline! A common misconception is that a pressure reducing valve is fitted in size for size.A pressure reducing valve that matches the pipe size always turns out to be more powerful than the technological process requires, because of this the valve does not work accurately, imagine a valve operating at 10-30% of its normal capacity, in fact it does not differ much from open-close regulation ”And the main functionality of such a valve remains unused.
The main parameters for the selection of the pressure regulator after itself:
- The type of environment.
- Inlet pressure.
- Outlet pressure.
- Medium consumption (min. Max).
- Medium temperature.
- Connection type.
VALVE DIAMETER WILL BE DETERMINED BASED ON THE PARAMETERS OF STEAM, PRESSURE, FLOW AND MEDIUM AND NOT FROM THE DIAMETER OF THE PIPE.
Selection by pipe - absolutely not... When selecting a pressure reducing valve, it is always necessary to go to the narrowing of the pipe in front of the valve and the expansion of the pipeline downstream of the valve.
What an ideal steam system reducer looks like
The normal selection of the reduction unit is carried out based on the parameters of the system.In a nutshell, we will describe the principle of selection of a pressure reducing valve assembly.
Suppose the main pipeline upstream of the pressure reducing valve is f 40, in this case the pressure reducing valve itself is calculated to be slightly smaller, approximately DN 32.
Behind the valve, it is usually necessary to expand the pipeline, usually dramatically.
That is, BEFORE the pressure reducing valve, the diameter of the steam pipe was f 40, and BEYOND the pressure reducing valve, the pipe will need to be expanded to f 50 or even f 65. (roughly)
Why is it necessary to expand the pipeline BEYOND the pressure reducing valve?
We have lowered the pressure - the steam has expanded - and the pipeline needs to be expanded to ensure the normal passage of steam through the system.
Tell us the parameters of your steam system and we will make a full calculation required pressure with optimal performance.
List of equipment for correct operation reduction unit:
Condensate drain upstream of the pressure reducing valve - MandatoryShut-off valve upstream of the pressure reducing valve - Mandatory
Filter before pressure relief valve - Mandatory
Safety valve - Mandatory
A steam separator is ideal.
Control valves are used to regulate steam flow in automatic control systems technological processes, heating, ventilation and air conditioning systems. The valves can be equipped with electric or pneumatic actuators. We offer valves for saturated and superheated steam, compressed air, water, high temperature thermal oil.
How to Choose a Steam Control Valve
The choice of a control valve for steam is a very responsible and difficult undertaking, because when selecting, each time you should take into account a number of factors and evaluate the valve according to several criteria at once. Therefore, for confidence in the right choice, we recommend that you contact the specialists of our company to inform detailed information about the process for which the valve is intended and, if possible, the most complete technical conditions... Only then can we be held responsible for the valve fulfilling its task and guaranteeing its functionality. If the user of our resource, being at the same time a specialist, did not find one in the list of valves that would satisfy his requirements, we also recommend contacting us, because the given the lineup is only part of our range of control valves.
Most of the control valves supplied by our company are equipped with Sauter electric actuators of the AVM234, AVF234, AVN224 series. These actuators are truly revolutionary in terms of their design. technical solutions... The drives have a built-in electronic control that automatically calibrates stem travel when the actuator is installed on a specific valve, three stem speeds, a quick-connect mechanism for the actuator stem to the valve stem, multi-level LED indication of the current state of the actuator, and the ability to select from several types of control signals within just one actuator model.
We offer control valves manufactured by the Swiss company Sauter and the Japanese company TLV for a wide range of applications. Being official partner and a direct valve supplier, we carry out the selection of new and technical support for discontinued valves.
In addition to traditional control valves, we offer special combination control valves TLV of the CV-COS series for steam, with an integrated filter, cyclone separator and condensate drain.
These devices are unique in terms of combining several important functions at once in one device and are sometimes indispensable, especially in systems with restrictions on overall dimensions and / or high demands to the quality of the steam.
Below are some of the main specifications and features internal structure different types valves.
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Steam control valve is designed to regulate parameters and maintain a given flow rate working environment at a certain section of the pipeline system. Using a steam valve on a specific section of the pipeline, you can change the steam flow rate, as well as its pressure. The steam valve performs its regulating function by changing the diameter of the flow area through which the flow of the working medium passes. Electric and pneumatic actuators, as well as thermostats and differential pressure regulators are used to control modern steam valves.
Views
Depending on the area where the steam valve will be mounted, the following types of such devices are distinguished:
- Angle valves are installed on pipeline sections that bend at 90 degrees;
- Pass-through steam fittings are mounted in areas with a direct flow of the working medium.
There are also such types of steam valves as two-way (without changing the direction of steam) and three-way (mixing or separating steam streams). Three-way steam valves are in demand in heating plants and heating points.
Specifications
Steam control valves consist of two functional parts - the valve itself, acting on the steam, and the actuator (actuator). The steam valve body is made of stainless steel, alloy steel or cast iron. Most of the models are maintainable and feature low operating noise. Simple and robust design steam valves, the ability to regulate the working environment in automatic mode makes them an optimal element for installation in systems of automatic monitoring and control of technological processes.
Peculiarities
Steam control valves differ in maximum working pressure and maximum temperature of the working medium, which must be taken into account when selecting suitable model... Also, the valve models differ in the pressure regulation range, in addition, some devices have a practical multi-stage regulation function.
Application
Steam valves are suitable for installation on pipelines of any purpose - in communal systems of residential and office buildings, in industries, in pasteurization systems, in boilers, boiler houses and heating points. Connection of fittings of this type to the pipeline different ways- by means of flanges or couplings, some models can be welded.
Shut-off device for power systems - electromagnetic valve for steam, reinforced design, type SL5575. Piston solenoid valve high pressure up to 75 bar type SB5592 are used to control processes in steam lines and heating installations - boilers, boilers. Solenoid valves are widely used for steam generators at temperatures up to 250 ° C. Structurally, SMART steam valves are perfect for long-term operation in hot and superheated water, compressed air and steam-water mixture.
Electromagnetic valves for steam are also used in hydraulic systems with a medium viscosity of not more than 20 cSt (oils, hydraulic fluid) and pneumatic equipment. Valve installation on flanged or threaded (coupling) pipeline. High pressure steam solenoid valves use special materials - heat-resistant o-rings PTFE (TEFLON), which makes operation more reliable. The solenoid coil is wound copper enamel wire of increased cross-section, which significantly prolongs the life of the solenoid valve, when working in difficult conditions.
Manufactured by Smart Hydrodynamic Systems (South Korea)
The product is certified. 1 year warranty
Valve electromagnetic SMART SB5592 
(without tension - closed)
Body: brass. Sealing: NBR (-10 ... +90 ° С); PTFE (-30 ... +150 ° C);
Working environment: petroleum products, oils, ethylene glycol, alcohols, solutions,
air, cold water, hot water, steam, steam-water mixture, etc.
| vendor code | PN, | Thread,inches | at 1 bar | ∆P range,bar | Coil series | Dimensions, | Weight, |
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Electromagnetic valve for SMART SL5575 steam
(without tension - closed)
Piston solenoid valve for high pressure steam
not direct action; Temperature regime work: −30 ... +180 ° С;
Body: corrosion-resistant brass; Piston seal: PTFE;
| vendor code | PN, | Thread,inches | at 1 bar | ∆P range,bar | Coil series | Dimensions, | Weight, |
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| (without tension - closed)
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