What is the difference between a pneumatic ball valve and an electric ball valve?

The electric ball valve is composed of electric actuator and ball valve. It is a kind of pipeline pressure element for industrial automation process control, which is usually used for remote opening and closing (on, off and off medium) control of pipeline media.

What is the basis for the selection of electric ball valves?

First, it is a control element, which is very wide in the application of fluid pipeline system, and it has many uses, and has a very good effect on controlling flow, pressure, reflow, etc. Because the quality of the electric ball valve has a great impact on the safety of the pipeline, it is necessary to select the electric ball valve according to certain steps and basis when choosing the electric ball valve.

2. Clarify the caliber of your company's pipeline, and know what kind of diameter and connection method you need to choose for the electric ball valve.

3. According to the needs of the pipeline, first determine some common parameters of the electric ball valve, such as the discharge capacity, the allowable flow resistance, the diameter of the valve seat hole, etc., if these parameters are not selected, the effect of the electric ball valve to control the flow will be greatly reduced.

Fourth, according to the working temperature of the pipeline, choose the appropriate material, of course, the working pressure of the pipeline, also to take into account.

The pneumatic ball valve is powered by the air source to drive the ball valve to open and close, and the electric ball valve uses electric energy as the power to turn on the electric actuator to drive the ball valve.

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.

As follows: pneumatic ball valve is a ball valve with a pneumatic actuator, the execution speed of the pneumatic actuator is relatively fast, and the fast switching speed is seconds, so it is usually called pneumatic quick shut-off ball valve. Pneumatic ball valves are usually equipped with various accessories, such as solenoid valves, compressed air treatment triplets, and limit switches.

Controller, control box, etc., to achieve local control and remote centralized control, the valve can be controlled in the control room, without running to the site to manually control, to a large extent to save human resources, time and safety. So about the selection of pneumatic ball valves, let's take a look.

The aspects that need to be paid attention to in the selection of pneumatic ball valves are:

1. The working principle of pneumatic ball valve is to rotate the valve core to make the valve unblocked or occluded. The ball valve switch is lightweight, small in size, can be made into a large caliber, reliable sealing, simple structure, easy maintenance, the sealing surface and the spherical surface are often in a closed state, not easy to be eroded by the medium, and have been widely used in various industries.

2. Pneumatic ball valves are mainly used in pipelines to cut off, distribute and change the flow direction of the medium.

3. Pneumatic ball valve is a relatively new type of ball valve, which has some advantages unique to its own structure, such as frictionless switch, sealing is not easy to wear, and the opening and closing torque is small. This reduces the size of the actuator. It is equipped with a multi-turn electric actuator.

It can realize the adjustment and tight cutting of the medium.

Pneumatic ball valve model 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: 6 means pneumatic;

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

KF: Shanghai Shuanghuang automatic control valve ****).

Pneumatic ball valves. It is a universal accessory composed of Wicker pneumatic actuator and ball valve, which can realize the automatic control of the opening and closing of the ball valve by driving the Walker actuator with an air source! This enables fully automatic control!

Ordinary ball valves can only be opened and closed manually! This requires someone to pay attention to and check the valve at all times! In addition, in enterprises such as the paper industry, which accurately measure the flow medium, it will be more accurate to use pneumatic ball valves!

The pneumatic ball valve is driven by aerodynamic force, which is generally used in large, or automatic adjustment occasions (but the ball valve is not suitable for regulating the flow), and the ordinary ball valve is manually driven.

There is a difference between normally open and normally closed three-way valves, that is, whether the supply port P and the working port A are open in the normal state, the open is normally open, and the break is normally closed.

One. Electric valves use electric motors for power, and pneumatic valves use compressed air for power.

1) Advantages of electric valves: good effect on liquid medium and large pipe diameter gas, not affected by climate. It is not affected by the pressure of air compressor. Disadvantages: high cost, not good in humid environment.

2) Advantages of pneumatic valves: good effect on gaseous medium and small diameter liquid, low cost, easy maintenance. Disadvantages: Affected by the fluctuation of air compressor pressure, it is easy to be affected by the water content of air compressor in the northern winter, resulting in the freezing and non-operation of the transmission part.

Two. Generally, pneumatics are faster than electric, and electric ones are dual-purpose flashlights. The pneumatic and pneumatic dual-use ** is relatively high.

Three. Electric valves are used in some places with large pipe diameters, because pneumatics are difficult to do, but the stability of electric valves is not as good as pneumatic, the switching speed is slow, and the actuator will have teeth jamming for a long time. Pneumatic valves open and close quickly and accurately, but require a stable air supply.