What is the difference between the selection of pneumatic ball valve and electric ball valve?

Hello, ball valve is a general term, mainly the difference of the driving mode, as follows:

1. Pneumatic ball valve: that is, the ball valve driven by gas, the source power is to use the compressed air of the air compressor as the power, and the valve action is driven by air pressure, and the control of the air source is realized by another small reversing solenoid valve;

2. Electric ball valve: that is, the ball valve driven by the power supply, the source power is the power supply of different voltages, which rotates through the motor, and then converts the power to drive the ball valve by the internal mechanical structure of the actuator, and realizes the ball valve switch action through the signal change of the wiring port

Xiamen Juhong.

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.

Pneumatic ball valves are ball valves with pneumatic actuators. The execution speed of pneumatic actuators is relatively fast, and the fastest switching speed is seconds, so it is usually called pneumatic quick shut-off ball valve. Pneumatic ball valves are usually equipped with a variety of accessories, such as solenoid valves, air source treatment triplets, limit switches, positioners, control boxes, etc., to achieve local control and remote centralized control, in the control room can control the valve switch, no need to run to the scene or high altitude and danger to bring manual control, to a large extent to save human resources and time and safety.

The specific classification of pneumatic ball valves includes: stainless steel pneumatic ball valves, plastic pneumatic ball valves, sanitary pneumatic ball valves, carbon steel pneumatic ball valves, two-way pneumatic ball valves, three-way pneumatic ball valves, and four-way pneumatic ball valves.

Switch form:

The solenoid valve is driven by a coil and can only be opened or closed, and the action time is short when opening and closing.

The drive of the electric valve is generally driven by a motor, and it takes a certain amount of time to complete the opening or closing action, which can be adjusted.

2.Nature of work:

Solenoid valves generally have a very small flow coefficient and a very small working pressure difference. For example, the flow coefficient of a 25-caliber solenoid valve is much smaller than that of a 15-caliber electric ball valve. The solenoid valve is driven by a solenoid coil, which is more easily damaged by voltage shock.

It is equivalent to the role of the switch, which is the two functions of opening and closing.

The electric valve is generally driven by a motor, which is more resistant to voltage shock. The solenoid valve is quick to open and close quickly, and is generally used in places with small flow and low pressure, and requires a large switching frequency. The opening of the electric valve can be controlled, and the state is open, closed, half-open and half-closed, which can control the flow of the medium in the pipeline and the solenoid valve cannot meet this requirement.

The solenoid valve can be reset when the power is off, and the electric valve needs to add a reset device to such a function. Electric valves are generally used for adjustment, and there are also switching amounts.

Electric valve: The spool is driven by a motor.

Solenoid valve: Use a solenoid coil to drive the guide valve stem.

The purpose of use is different.

Electric valve: electric valve is generally a large pipe diameter, used in the flow of fluid, cut-off, flow, pressure and other control, circulation, cut-off control is called electric on-off valve (some can only be opened or closed, some can be stopped in the middle such as only a rough adjustment, such as %) for flow and pressure control is called electric control valve, what electric ball valve, electric disc valve, and what is called intelligent control valve, in fact, they are all electric valves.

Solenoid valve: It is used in hydraulic and pneumatic pressure control to control the state of oil cylinders and cylinders, and is a control element used in oil and air circuits. It acts like a contactor in electricity.

The functions and uses of the two are completely different and cannot be mixed.

There is a difference in the size of the torque electric valve.

In the form of adjustment, the electric valve can roughly control the opening, and the realization principle is to stop during the rotation of the motor, and the solenoid valve can only control the full opening and full closing.

The solenoid valve is generally 220V instrument power supply, and the power supply is control.

The electric in the electric valve refers to the electric actuator, the regulating valve can regulate the flow, and the ball valve you are talking about should be a cut-off valve that can only cut off the function of the flow medium without the function of adjustment. Shuke (Shanghai) Pipeline Equipment Service****-Shuke Company is the world's only 56" diameter 900 pound natural gas pipeline ball valve and actuator performance holder.

The type of valve is divided into ball valve, butterfly valve, seat valve, etc., electric valve refers to the actuator running through the motor, and the switch type is divided into switch type and regulation type, the switch type is also called the switch valve, and the regulating type is also called the control valve.

Ball valve is a kind of valve, mainly used to cut off or connect the medium in the pipeline, let's take a look at the types and functions of ball valves.

The main classification of ball valves.

The main points are: floating ball valve, fixed ball valve, disc ball valve, orbital ball valve, V-type ball valve, O-type ball valve, shut-off ball valve, three-way ball valve, four-way ball valve, forged steel ball valve, ash discharge ball valve, anti-sulfur ball valve, eccentric ball valve, insulation ball valve, pneumatic ball valve, electric ball valve, ferrule ball valve, welded ball valve.

Floating ball valves.

The ball of the floating ball valve is floating, and under the pressure of medium flow, the ball can produce a certain displacement and press on the sealing surface of the outlet end to ensure that the outlet end is sealed. However, all the load of the fluid medium on the sphere is transmitted to the outlet sealing ring, and the sphere will deviate when it is subjected to pressure impact. This valve is generally used in medium and low pressure fluid lines.

Mounted ball valves.

The ball body of a fixed ball valve is fixed and does not move after being subjected to fluid pressure. Mounted ball valves are equipped with a floating seat, which is driven by the medium and the seat is moved, so that the sealing ring is pressed against the ball to ensure a tight seal. Bearings are usually installed on the upper and lower shafts with the ball, and the operating torque is small, which is suitable for high-pressure or large-diameter products.

Regulating Ball Valve Regulating Ball Valve has a shear effect on the valve seat due to the V-shaped structure of the ball core. It is suitable for adjustment and use in the fluid control system containing fibers or tiny solid particles in pulp, white water, black liquor, white liquor and other media in industrial papermaking, chemical industry, and metallurgy.

V-Ball Valve The V-Ball Valve is a fixed ball valve and a single-seat sealed ball valve, with the best regulation performance in its class. It has a shear effect between the V-cut and the metal seat, and is the first choice for media containing fibers, fine solid particles, slurries, etc.

Three-way ball valve Three-way ball valve is divided into T type and L type. The T-type can make the three orthogonal pipes connect with each other and cut off the third channel, which plays the role of diversion and confluence. The L-type only connects two pipes that are orthogonal to each other, and cannot connect the third pipeline at the same time, and mainly plays a distribution role.

The role of the ball valve.

The main function of a ball valve is to cut off or open the fluid passage in the pipeline, i.e., the ball valve is usually a closed circuit valve. Therefore, the principle of action of the ball valve is very simple: with the help of a handle or other driving device, a certain torque is applied to the upper end of the valve stem and transmitted to the ball, so that it rotates 90° (except for special ball valve structures), and the through hole of the ball is coincident with the centerline of the valve body channel or perpendicular The ball valve completes the full opening or closing of the motion.

How ball valves work.

Ball valves are designed with a 90-degree rotation of the spool, through which a circular through a hole or channel passes. The ball valve is used to cut off, cut-off, and change the flow direction of the fluid in the fluid pipeline, and the ball valve can rotate the torque to achieve the effect of tight sealing as long as it rotates 90 degrees. In recent years, the development of ball valves has changed from shut-off and shut-off to throttling and controlling flow.

A ball valve is a type of valve that controls the flow or truncation of a fluid by the rotation of the ball. Its main function is to achieve fast fluid switching and shut-off, and is widely used in various industrial fields, including petroleum, chemical industry, electric power, metallurgy, water treatment, etc.

Ball valves can be divided into a variety of classifications according to different structures and uses, including the following common types:

1.Full bore ball valve: The bore diameter of the ball body is consistent with the channel diameter of the valve body, which can achieve unhindered fluid flow, with less fluid resistance and a larger flow channel.

2.Pipeline ball valve: The shape of the ball is consistent with the shape of the pipeline, and can be directly connected with the pipeline to realize the fluid cut-off and cut-off in the pipeline system.

3.Reducer Ball Valve: The bore diameter of the ball is smaller than the channel diameter of the valve body, which can realize the regulation and control of the fluid, and is often used in occasions where precise flow control is required.

4.V-type ball valve: The ball hole of the ball body is V-shaped, which can realize the regulation and control of fluids, and is often used in the occasion of viscous media and liquid-solid mixed transportation medium.

5.Four-way ball valve: There are four channels in the ball, and the void can realize the mutual switching of two fluid flows or the mixing and diversion of fluids.

6.High temperature and high pressure ball valve: used for high temperature and high pressure fluid media, with the characteristics of high temperature and high pressure resistance, usually with special materials and structural design.

In fact, there are many types of ball valves, and the specific classification methods and uses will vary according to different standards and needs. When selecting and applying ball valves, it is necessary to make a reasonable selection according to the specific process requirements, fluid properties, pressure and temperature and other factors.