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Views: 22 Author: Site Editor Publish Time: 2024-11-18 Origin: Site
In the industrial field, the control of fluid flow is a crucial task. In this field, stainless steel ball valve play a central role. A ball valve is a valve that controls the flow of liquid or gas by rotating a sphere with an orifice. When the sphere is rotated by 90 degrees, the medium can either pass through smoothly or be blocked completely. This type of valve is known for its durability and ability to maintain a tight seal after long periods of non-use. Ball valves are also more resistant to contaminants than other types of valves.
Imagine a faucet in your house where water comes on with a simple turn. The ball valve works on a similar principle. It has a round sphere, turn it once and the valve opens, turn it again and it closes. The design is super simple and easy to operate, whether you're an expert or not. Also, the other parts of the ball valve, such as the seat and the actuator, are all designed to make it easier for you to use and less likely to break. The valve seat is like a soft cushion that ensures that not a drop of water is allowed to flow out when the ball is turned. The ball valve handle can be manual, just like screwing a screw, or electric, with a one-touch on/off switch, it's so convenient.
A ball valve is like an old-fashioned appliance at home, durable as hell. It has a line contact between the ball and the valve seat, so there is little wear and tear, and it naturally lasts a long time. Moreover, the materials used for ball valves are not afraid of water or oil, so even in a very dirty or acidic environment, it can keep working without striking. This design not only makes the ball valve stand the test of time, but also gives you less trouble in maintenance, saving your heart and effort.
The first Advantage of a ball valve is that it helps you control the flow of water precisely. It opens a little when you want to open it and closes it tightly when you want to close it, completely at your command. Moreover, ball valves can be customised according to your needs, just like custom-made clothes. How big a valve you need, what kind of material you want, WKT industrial valve manufacturer can do it for you. Such personalised service not only makes ball valves work better, but also solves many special problems.
Ball valves are renowned for their reliability. Whether in a high-temperature and high-pressure environment, or in the presence of hazardous substances, ball valves can work steadily, not letting a drop of something that shouldn't flow leak out. At the same time, the design of the ball valve is also very flexible, just like the Transformers, can be changed into different forms according to different working environments and needs. Such a ball valve, not only in the factory to show their hands, but also in the petroleum, chemical, pharmaceutical, food processing and other industries to play a role, truly where the need where to move.
The working principle of a ball valve is based on its precise structural design. The ball is the core part of the ball valve, usually made of metal, with a through hole in the centre matching the diameter of the pipe. The seat is fixed to the valve body and is in close contact with the ball, forming a sealing surface. When the ball body rotates, the sealing surface between the seat and the ball body ensures that the medium will not leak.
Opening process: When the operator rotates the handle clockwise or counterclockwise, the valve stem transmits the power to the ball. The ball then rotates until the through-hole is aligned with the pipeline, at which time the medium can pass through the valve without obstacles.
Close the process: continue to rotate the handle, the ball continues to rotate until the through-hole is completely covered by the ball, at this time the valve seat and the ball to form a sealing surface completely block the flow of media.
The sealing performance of the ball valve is the key part of its working principle. Valve seat material is usually selected wear-resistant, corrosion-resistant synthetic materials or metal, to ensure that in high-pressure and different temperature conditions can maintain good sealing performance. Between the ball and the seat, there is usually a preload force, this force makes the two always keep close contact during operation, to prevent media leakage.
Since the ball valve's body is designed as a full bore, i.e., the diameter of the ball's through-hole is the same as the inside diameter of the pipeline, there is almost no resistance to the fluid when it passes through the ball valve. This design not only reduces pressure loss, but also improves the overall efficiency of the system.
The ball valve's simple design and small number of components make it easier to maintain. At the same time, the sealing surface of the ball valve is not subjected to media scouring in the closed state, which increases the service life and reliability of the valve.
Fully welded ball valves are mainly put together by several parts, including the left and right side of the valve body, the middle of the valve body, the ball, the valve stem, the support ring and the triangular valve seat. Most of these parts are made of forged steel and are also galvanised so that they will not be easy to rust and will keep the valve from leaking.
Inside the all-welded ball valve, there are two O-rings between the support ring and the left valve body, and they form a double-layer sealing structure. When there is no medium pressure, the spring will pre-compress the O-rings to form the initial seal. When the medium passes through the valve, the pressure will further press the O-rings, so that they are tightly attached to the ball, which ensures no leakage during normal operation.
In order to seal better and have a longer service life, all-welded ball valves use an integral bi-directional sealing ball valve seat. This design is different from the traditional ball valve seat, it has a double sealing effect, which can do double isolation and discharge. The integral design allows less effort to open and close the valve, less material is used, and the sealing effect is better.
This integral two-way sealing ball valve seat uses an enlarged O-ring to seal. It seals itself whether the valve is moving or not.
Ball valves, as a kind of industrial valves, are widely used in many fields and occasions because of their unique structure and excellent performance. The following are the main applications of ball valves:
Ball valves are indispensable components in the petroleum and chemical industries. They are used to control the flow of crude oil, natural gas, chemical raw materials and other media in pipelines. The fast switching ability and good sealing performance of ball valves make them ideal for oil refining and chemical production processes.
In the power industry, ball valves are used for media control in boiler feedwater systems, cooling water systems and other auxiliary systems. They are able to withstand high temperature and pressure environments to ensure the stable operation of power facilities.
In water treatment and water supply systems, ball valves are used to regulate and cut off water flow. Due to their low fluid resistance, ball valves help reduce energy consumption and improve the operational efficiency of the system.
In food and beverage processing, ball valves are used to ensure product hygiene and safety. The clean design and easy maintenance of ball valves make them ideal for handling food-grade media.
In the pharmaceutical industry, ball valves are used to control the flow of pharmaceutical raw materials and chemicals. Their high sealing performance ensures purity and safety during pharmaceutical production.
In the aerospace industry, ball valves are used to control the flow of fuel, oxygen and other critical media. The reliability and precise control of ball valves is critical to the safety of the aircraft.
In the building and civil sector, ball valves are used for the control of media in heating and air conditioning systems, as well as for the distribution of domestic water.
Brass ball valves are suitable for a variety of media, especially in the water supply and low pressure gas system. They have good corrosion resistance and economy, but are not suitable for solutions containing chlorides.
Stainless steel ball valves are suitable for highly corrosive environments, such as chemical, oil and gas industries. They are able to resist the erosion of many chemical media and maintain long-term stability.
When selecting ball valves, the first thing to consider is the chemical nature of the medium, such as acidic, alkaline, neutral or corrosive, as well as the physical state, such as gases, liquids, or media containing particles. These factors directly affect the ball valve material selection and structural design.
The operating conditions of the ball valve include the temperature and pressure of the medium and the switching frequency of the valve. Valve must be able to design the temperature and pressure range of normal operation, and for frequent operation of the occasion, need to consider the valve's wear resistance and quick connection characteristics.
The size of the ball valve should match the size of the pipeline, while the connection method (such as ball valve with flange connection, threaded connection, welding, etc.) should be compatible with the existing piping system.
According to the nature of the medium and working conditions, select the appropriate valve material, such as stainless steel, brass, etc.. The structure of the ball valve (e.g. floating ball, fixed ball, etc.) should also be determined according to the sealing performance requirements and the cleanliness of the medium.
According to the operating requirements and environmental conditions, choose manual, electric or pneumatic drive mode. Manual drive is suitable for simple operation, electric and pneumatic drive is suitable for occasions requiring remote control or automation.
Ensure that the ball valves comply with national and industry safety standards, have good sealing performance and structural stability, as well as products from reliable manufacturers.
Under the premise of meeting technical requirements, consider the cost-effectiveness of ball valves and long-term maintenance costs, and select the most cost-effective products.
Ball valves, this important member of industrial valves, with its unique working principle and wide range of applications, has become an indispensable part of other fields such as industry. Through the in-depth analysis of the working principle and application scenarios of the ball valve, we can better appreciate the important role and value of this industrial product in modern society. With the continuous progress of technology, ball valves will continue to play its excellent performance in various fields, contributing to the development of technology.
