Comparison of the accuracy of electric metering and regulating ball valves, electric regulating valv

Here are some of the well-known brands recognized in the valve industry, which are widely recognized and have a high reputation. While rankings may vary depending on time and market conditions, the following brands are generally considered to be among the top brands in the valve industry:

The following influential first-line brands of water system valves and industrial valves can be used as a reference, but for reference only: Suzhou Neway Valve, Shanghai Guanlong Valve, Shanghai Qizhong Valve, Sanhua, Su Yan, Shentong, Su Valve, Nanfang, Jiang.

First, the word Yao. The above manufacturers are only estimates and references, and the specific situation may vary or fluctuate at any time due to changes in a series of factors such as changes in the market, the size of the competition pattern, and the stability of product quality. As an indispensable key device in industrial production and civil facilities, the quality and reputation of the valve brand directly affect the satisfaction and trust of users.

These brands are known in the valve industry for their innovative technology, high-quality products and reliability. It is important to note that the market and industry are evolving rapidly, and different rankings may vary depending on time and region. For the most up-to-date ranking information, it is recommended to refer to industry reports, professional organizations or market research data for more detailed and accurate information.

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Summary. Electrically controlled valves differ from electrically controlled ball valves in terms of accuracy. Electric control valves typically have higher accuracy for more precise flow regulation and are suitable for processes that require precise control.

Electrically controlled ball valves, on the other hand, have a relatively low accuracy and are suitable for applications where flow regulation is less demanding. This is because the electric control valve adopts the structural design of the regulating valve, which can adjust the opening of the valve more flexibly, so as to control the flow more precisely. The electric control ball valve adopts the structural design of the ball valve, and its opening adjustment is relatively fixed, so the accuracy is relatively low.

The electric control valve and the electric control ball valve are different in terms of accuracy. Electric control valves typically have higher accuracy for more precise and discreet flow regulation, and are suitable for process wheel engagement where precise control is required. Electrically controlled ball valves, on the other hand, have a relatively low accuracy and are suitable for applications where flow regulation is less demanding.

This is because the electric control valve adopts the structural design of the regulating valve, which can adjust the opening of the valve more flexibly, so as to control the flow more precisely. The electric control ball valve adopts the structural design of the ball valve, and its opening adjustment is relatively fixed, so the accuracy is relatively low.

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The electric control valve has a higher precision dispersion scale than the electric bush control ball valve, which is suitable for applications where precise flow control is required. The electrically controlled ball valve has a relatively low accuracy and is suitable for applications where flow requirements are not too stringent.

This is based on the caliber, connection form, pressure, sealing material, and valve body material.

Ball valve model compilation representation method:

Additional code for ball valves: V means the valve core has a V-shaped structure, D means low temperature, B means heat preservation, P means eccentric structure, U and S and DY mostly represent top-mounted type;

Ball valve name code: Q means ball valve;

Ball valve drive code: 2 means electro-hydraulic, 3 means turbine, 6 means pneumatic, 7 means hydraulic, 9 means electric, manual no code;

Connection code: 1 means internal thread, 4 means flange type, 6 means welding, 7 means clamp type;

Structure type code: floating type: 1 means straight flow to, 2 means Y-type tee, 4 represents L-type tee, 5 represents T-type tee;

Fixed: 0 means hemispherical straight-through, 6 means four-way flow, 7 means straight-through flow to, 8 means L-shaped tee, 9 means Y-shaped tee;

Sealing material code: B babbitt, F fluoroelastomer, F46 fluorine lining, H rust steel, J lining, M Monel alloy, N nylon plastic, Monel P, Y cemented carbide, W valve body direct processing;

Pressure class code: 16 means that the pressure is 16 kg (up to 64MPa;

150lb represents the American standard pound pressure, and the maximum pressure resistance level can reach 2500lb (150lb=;

5k represents daily pressure, and the maximum pressure is 63k;

Body material code: A titanium and titanium alloy, C carbon steel, I chromium molybdenum steel, P18-8 stainless steel, RMO2TI stainless steel, S plastic.

Is the connection flanged, threaded or something else?

The structure of the electric ball valve is simple, only composed of a few parts, and the data consumption is saving; Small size, light weight, small installation size, small driving torque, pressure regulating valve, easy to operate, agile, only need to rotate 90° to quickly open and close; At the same time, it also has good flow regulation effect and closed sealing characteristics, and the electric ball valve is the dominant valve situation in the application of large and medium diameter, medium and low pressure. When the electric ball valve is in the full opening position, the thickness of the butterfly plate is the only resistance when the medium flows through the valve body, so the pressure drop that occurs through the valve is very small, so it has better flow control characteristics. There are two types of seals: elastic seal and metal seal.

Elastomeric seal valves, the sealing ring can be embedded in the valve body or attached to the perimeter of the butterfly plate. Valves with metal seals generally have a longer life than valves with elastomeric seals, but it is difficult to achieve a complete seal. Metal seals can accommodate higher operating temperatures, while elastomeric seals have the disadvantage of being limited by temperature.

If a motorized ball valve is requested to be used as a flow control, it is important to select the exact size and type of valve. The construction principle of electric ball valves is particularly suitable for the manufacture of large-bore valves. Electric ball valves are not only widely used in general industries such as petroleum, gas, chemical industry, and water disposal, but also used in the cooling water system of thermal power stations.

There are two commonly used electric ball valves: clamp-type electric ball valve and flanged electric ball valve. The clamp-type electric ball valve is to connect the valve between the two pipeline flanges with stud bolts, and the flanged electric ball valve is a flange on the valve, and the flanges at both ends of the valve are connected to the pipeline flange with bolts. The strength performance of the valve refers to the ability of the valve to withstand the pressure of the medium.

Valves are mechanical products that are subjected to internal pressure, so they must have sufficient strength and stiffness to ensure long-term use without cracking or deformation.

The structure of the electric regulating ball valve is simple, only composed of a few parts, and the data consumption is saved; Small size, light weight, small installation size, small driving torque, pressure regulating valve, easy to operate, agile, only need to rotate 90° to quickly open and close; At the same time, it also has good flow regulation efficiency and closed sealing characteristics, and in the application of large and medium diameter, medium and low pressure, electric control ball valve is the dominant valve situation. When the electric regulating ball valve is in the full opening position, the thickness of the butterfly plate is the only resistance when the medium flows through the valve body, so the pressure drop through the valve is very small, so it has a good flow control characteristic. There are two types of electric adjusting ball valves: elastic seal and metal seal.

Air, steam, water, gases, petroleum and petrochemicals, corrosive targeting media.

Electric ball valves are usually used in occasions with strict sealing requirements, in addition to controlling gas, liquid, steam media, but also suitable for controlling sewage and media containing fibrous impurities, widely used in petroleum, chemical industry, metallurgy, light industry, papermaking, power station, refrigeration and other work fields.

Electric ball valve is an important type of valve, which is widely used in petrochemical industry, long-distance pipelines and other fields. The closing part of the ball valve is a ball (or part of a ball) with a hole, and the ball rotates with the valve stem to realize the opening or closing of the valve.

Compared with gate valves and globe valves of the same specification, the ball valve has a small volume key and light weight, which is convenient for pipeline installation.

It is a kind of pipeline pressure element for industrial automation process control, which is usually used for remote opening and closing (on, cutting off medium) control of pipeline medium.

Features: It adopts an integrated structure, and can control the operation with a single-phase power supply AC220V and a DC power supply of 24VDC.

It has the advantages of small size, light weight, reliable performance, simple matching and large circulation capacity.

Working characteristics: It is suitable for the process occasions and fluid control systems where the pressure difference of the pipeline is large, the hole is opened and closed early with strict sealing requirements, and the pipeline medium is cut off.

Operating temperature: -20 to +150 (250 special seals).

Working pressure: PN16, PN25 - PN40 - PN64 -PN100

1. The electric regulating ball valve has small fluid resistance, is the smallest fluid resistance among all valves, with AC220V, AC380V or DC24V power supply voltage, accept (4-20mA, 0-10mA or 1-5VDC) current signal or voltage signal, you can control the operation, and rotate the ball 0 90° with the torque output of the angular stroke, you can complete the opening and closing action or adjustment action.

2. Fully electronic electric actuator, using organic and electrical integration structure, with servo operation in the machine and opening signal position feedback, position indication, manual operation and other functions, strong function, reliable performance, simple connection, through the input of current signal or voltage signal, change the rotation angle of the ball core (0-90 ° arbitrary angle), to achieve proportional adjustment action.

3. The core channel is flat and smooth, not easy to deposit media, and can be pipelined. Simple structure, light weight and good sealing performance. It is especially suitable for applications where zero leakage rate is required.

The electric regulating ball valve is suitable for the occasion of two-position shut-off and adjustment. The connection between the valve and the actuator adopts the direct connection mode, and the electric actuator has a built-in servo system, which can be controlled by entering 4-20mA signal and 220VAC power supply without another servo amplifier. It has the advantages of simple wiring, compact structure, small size, light weight, low resistance, stable and reliable action, etc.

The electric adjustable ball valve adopts the original electronic braking circuit and the additional mechanical damping device to eliminate inertia, which can stop instantaneously, no oscillation during positioning, and the positioning accuracy can reach above. Thyristor output, fast action time, stable output, high reliability. Small size, light and cheap, reliable performance, simple matching, large circulation capacity, especially suitable for the medium is viscous, particle-containing, fibrous occasions.

At present, the valve is widely used in the industrial control coefficient of food, environmental protection, light industry, petroleum, papermaking, chemical industry, teaching and scientific research equipment, electric power and other industries.