Use, Installation, and Maintenance Of The Ball Valve

The correct use, installation, and maintenance of the ball valve are very important, and it is also the content that the heating company must refer to when formulating operating procedures. Scientific management and maintenance of the ball valve during construction can not only ensure safety but also reduce construction and operation management. Ball valve suppliers will remind you to pay attention to the following aspects:

1) Use correct methods to load and unload the valve to avoid mechanical damage to the valve. When lifting the valve, do not tie the lifting belt to the valve stem or actuator for lifting. If the valve is operated in violation of regulations, the valve stem will bend, the valve stem seal will fail, and the turbine box will be destroyed.

2) Before the valve leaves the factory, the blind plates or covers should be sealed at both ends of the valve to prevent impurities such as water and sand from entering the valve cavity at the transportation and construction site, causing seal damage and corrosion.

3) At the construction site, the valves should be placed neatly and should not be placed randomly, otherwise the drain valve or the grease injection valve of the valve will be broken and damaged.

4) Before the welding construction of the fully welded ball valve, confirm that the valve is welded in the fully open position to avoid damage to the ball and scratches on the sealing surface caused by the welding spatter. The welding temperature between the valve seats is controlled at 140 degrees.

5) After the water pressure test is completed, the water in the valve cavity should be drained to prevent corrosion and freezing.

Daily maintenance of ball valves

1) For ball valves, regularly check the sealing performance of the valve and check it through the drain valve. If there is internal leakage, follow the steps.

2) According to the frequency of valve movement, inject a certain amount of grease into the valve seat. Generally, a proper amount of grease should be injected after the valve is moved once, and the amount injected each time is 1/8 of the sealing system to avoid impurities in the pipeline to the greatest extent. The back cavity of the valve seat affects the movement of the valve seat, thereby causing sealing failure, while ensuring that the sealing surface is always in a lubricated state, prolonging the service life.

3) For valves with small movements, open and close operations should be carried out once a year, and a certain amount of grease and cleaning fluid should be injected to avoid dry grinding of the ball during movement and reduce the operating torque of the valve.

Ball valve

4) The ball valve should be maintained before winter. The key is to drain the water in the valve cavity and the water in the actuator to avoid freezing and freezing in winter, which will affect the function of use.

5) Add wear-resistant grease to the valve worm gear head actuator every year, regularly check the valve stem sealing, remove rust, and do external protection.

Difference Between Gate Valve And Butterfly Valve

Gate valves and butterfly valves are two very common valves. The two differ greatly in their respective structures, methods of use, and adaptation to the working environment. This article will help users better understand the difference between gate valves and butterfly valves, so as to better help users choose valves.

Before explaining the difference between gate valves and butterfly valves, let's take a look at their respective definitions. Perhaps from the definition, you can carefully find the difference between the two.

Gate valve, as the name suggests, can cut off the medium in the pipeline like a gate valve. It is the valve we use in production and life. The opening and closing part of the gate valve is called the gate, which is used for lifting movement. The moving direction of the shutter is perpendicular to the flow direction of the medium on the fluid line. Gate valve is a kind of cut-off valve, it can only be fully open or fully closed, and the flow cannot be adjusted.

A butterfly valve is also called the flap valve. The opening and closing member is a disc-shaped disc that is fixed on the valve stem and rotates around the valve stem and valve shaft for opening and closing. The direction of movement of the butterfly valve is to rotate in place, and it only needs to rotate 90° from fully opening to fully closing. In addition, the butterfly valve itself does not have self-locking capability. It needs to install a turbo reducer on the valve stem. With it, the butterfly plate has the self-locking ability and can also improve the operating performance of the butterfly valve.

To understand the definition of gate valve and butterfly valve, the difference between gate valve and butterfly valve is introduced below:

1. Differences in athletic ability

In the above definition, we understand the difference between gate valve and butterfly valve in the direction of movement and the way of movement. In addition, since the gate valve can only be fully opened and fully closed, in the fully open state, the flow resistance of the gate valve is small; in the fully open state, the thickness of the butterfly valve produces resistance to the flowing medium. In addition, the opening height of the gate valve is high, so the opening and closing speed are slow; while the butterfly valve can be opened and closed only by rotating 90°, so the opening and closing speed are fast. Contact us about our products.

butterfly valve

2. The difference between function and use

The gate valve has good sealing performance, so it is often used in pipelines that require strict sealing and do not need frequently repeated switching to cut off the circulating medium. Gate valves cannot be used to regulate flow. In addition, due to the slow opening and closing speed of the gate valve, it is not suitable for pipelines that need to be closed urgently. The butterfly valve has a wide range of uses. The butterfly valve can not only be used for truncation but also has the function of adjusting the flow rate. In addition, the butterfly valve opens and closes quickly, and can also be opened and closed frequently, which is especially suitable for occasions that require fast opening or cutting.

The size of the butterfly valve is smaller than that of the gate valve, and the weight is lighter than that of the gate valve. Therefore, in some environments with limited installation space, it is recommended to use a more space-saving wafer butterfly valve. Among the large-diameter valves, the butterfly valve is the most used valve, and the butterfly valve is also recommended for conveying medium pipelines containing small particles of impurities.

Butterfly valves have gradually replaced other types of valves under many working conditions and have become the first choice of many users.

3. The price difference

Under the same pressure and the same caliber, the price of gate valves is higher than that of butterfly valves. But the diameter of the butterfly valve can be made large, and the price of the large-diameter butterfly valve is not cheaper than the gate valve.

We are butterfly valve suppliers. Please feel free to contact us if you are interested in our products.

Can a Ball Valve Be Used As a Control Valve?

If you have basic valve knowledge, you may be familiar with ball valves-one of the most common valve types today. The ball valve is usually a quarter-turn valve with a perforated ball in the middle to control the flow. These valves are known for their durability and excellent shutoff but do not always provide very precise control. Let's talk about when you can use a ball valve as a control valve.

Although the ball valve is not the best device to control the flow, it is still widely used due to its cost-effectiveness. You can use ball valves in applications that do not require precise adjustment and control. For example, a ball valve should have no problem keeping a large tank full at a certain level within a few inches.

As with any equipment, you need to consider the complete process conditions before choosing a valve. This includes product or material, pipe size, flow rate, etc. If you want to control expensive materials and you are worried about wasting them, you may not want to rely on ball valves.

Valve

Ball valves are not very precise because their adjustment is not proportional to the large flow rate provided by the open hole. There are also "slop" or "play" between the stem and the ball that hinder precise control. Finally, the amount of torque required to adjust the ball valve does not allow fine adjustments near the "closed" and "open" positions.

When you need precise control of your application, the globe valve will be more precise than the ball valve. Globe valves are considered the industry standard for control valves because they are good at regulating flow, while ball valves are more suitable for on/off control without pressure drop.

If ball valves must be used to control the process, different types of ball valves may need to be considered depending on the application. A trunnion or v-port ball valve will perform better and allow more accurate adjustments in certain situations.

The trunnion ball valve has an additional mechanical anchoring of the ball at the top and bottom. They are connected by a splined or keyed valve stem, eliminating any play between the ball and the valve stem. The V-port ball valve has a "V"-shaped ball instead of a standard round hole. This allows more control because of the tapered opening, allowing for more linear flow.

We are ball valve manufacturers. If you are interested in our products, please feel free to contact us.

How To Operate And Actuate a Butterfly Valve

Butterfly valves are one of the most useful valves in piping systems. They enable the operator to start, stop or restrict fluid flow in the system. This method is especially useful if you need to repair, clean, or modify the system, and you want to make sure that no liquid passes through the pipeline.

Despite this name, the butterfly valve does not look like a butterfly. Butterfly valves are quarter-turn valves, which means they go from fully open to fully close at a 90-degree angle. A butterfly is called a "butterfly" because its wings move around a central axis, just like the body of a butterfly. But for a butterfly valve, there is much more to it than the central disc.

Butterfly valve components

At the most basic level, a butterfly valve consists of a disc, a valve seat, a valve body, and an actuator. Most butterfly valves have more parts, but they are an essential part of a butterfly valve.

Actuator: This part is also called handle or manipulator. It controls the opening or closing distance of the butterfly valve. It is usually a handle that can move 90 degrees, but it can also be a faucet-like rotating handle. On the valve above, you can squeeze the handle to operate the actuator.

Seat: The seat of a butterfly valve is usually made of some kind of rubber. It ensures that when the valve is in the closed position, there will be a tight and safe seal. If the butterfly valve stops working properly, it is likely that the valve seat has been damaged in some way.

Disc: The disc is what gives a butterfly valve its name. When the disc rotates, the valve opens, giving the disc a butterfly-like appearance. The disc is moved by the actuator and can be completely closed, completely opened, or somewhere in between.

Body: The body of a butterfly valve enables it to be connected to pipes and fittings. It is everything around the valve seat and constitutes a large part of the valve structure.

What is actuation and why is it important?

Actuate literally means "to put into action." Therefore, when you activate the butterfly valve, you are putting it into action. The default state of the butterfly valve is closed; this does not allow liquid to pass through. If you want the fluid to flow through without any drop inflow pressure, you can turn the handle 90 degrees to fully activate the butterfly valve.

When people usually talk about actuation in butterfly valves, they are actually talking about automation. When a butterfly valve must be opened to a very specific degree, you can choose an electrically actuated butterfly valve. These are also useful if your butterfly valve needs to be opened and closed frequently.

What makes these valves so valuable and different from other valves is that they have more than two positions. It can be opened anywhere from 0 degrees to 90 degrees. The more open the blood vessels, the more fluid will pass through. Although some piping systems do not require local flow, many other systems do.

Gas: When adjusting the flow of compressed air or other gases, it is often extremely important to control how much gas flow. The butterfly valve works equally well for gas and liquid. When used correctly, these valves can act as dampers to control the flow so that only the specified amount passes.

Liquid: The obvious application of butterfly valves is liquid conveying. In agriculture and manufacturing, regulating the flow of water and other liquids is crucial. If you allow too much water in the irrigation system, you may over-irrigate your crops and destroy your crops. The butterfly valve allows you to select the amount of liquid to pass through the system.

We are butterfly valve suppliers. If you are interested in our products, please feel free to contact us.

Daily Maintenance And Maintenance Of Ball Valves

1) For ball valves, regularly check the sealing performance of the valve and check it through the drain valve. If there is internal leakage, follow the steps.

2) According to the frequency of valve movement, inject a certain amount of grease into the valve seat. Generally, a proper amount of grease should be injected after the valve is moved once, and the amount injected each time is 1/8 of the sealing system to avoid impurities in the pipeline to the greatest extent. The back cavity of the valve seat affects the movement of the valve seat, thereby causing sealing failure, while ensuring that the sealing surface is always in a lubricated state, prolonging the service life.

3) For valves with small movements, open and close operations should be carried out once a year, and a certain amount of grease and cleaning fluid should be injected to avoid dry grinding of the ball during movement and reduce the operating torque of the valve.

4) The ball valve should be maintained before winter. The key is to drain the water in the valve cavity and the water in the actuator to avoid freezing and freezing in winter, which will affect the function of use.

5) Add wear-resistant grease to the valve worm gear head actuator every year, regularly check the valve stem sealing, remove rust, and do external protection.

In order to improve the reliability of the valve and prolong the service life of the valve, it is very important to do a good job in the early maintenance and supervision of the valve. Many problems can be avoided through early detection and timely treatment.

Therefore, the management and maintenance of the ball valve must not only strengthen professional training to ensure that the maintenance is scientific, standardized, and safe but also this concept must be changed. Preventive maintenance management and the safety of the heating system must ensure heating quality.

We are ball valve suppliers. If you are interested in our products, please feel free to contact us.

Do You Know Ball Valve?

Ball valves came out in the 1950s. It is a valve that has been used more and more in thermal systems in recent years. Its superior performance is unattainable by other valves. There is no fluid resistance, lightweight, good sealing performance, no leakage, and can be opened and closed. The advantages of fast switching, non-corrosion by medium, and long service life have gradually gained the favor of enterprise valve selection. However, how to perform routine maintenance and repair of valves in daily operation has also become a work that cannot be ignored by heating companies.

By understanding the working principle of the valve and the characteristics of the product, as well as the operation method and troubleshooting, the corresponding production operation system can be formulated in the company's normal production to ensure the safe operation of the valve equipment.

The correct use, installation, and maintenance of the ball valve are very important, and it is also the content that the heating company must refer to when formulating operating procedures. Scientific management and maintenance of the ball valve during construction can not only ensure safety but also reduce construction and operation management. Pay attention to the following aspects:

1) Use correct methods to load and unload the valve to avoid mechanical damage to the valve. When lifting the valve, do not tie the lifting belt to the valve stem or actuator for lifting. If the valve is operated in violation of regulations, the valve stem will bend, the valve stem seal will fail, and the turbine box will be destroyed.

2) Before the valve leaves the factory, the blind plates or covers should be sealed at both ends of the valve to prevent impurities such as water and sand from entering the valve cavity at the transportation and construction site, causing seal damage and corrosion.

3) At the construction site, the valves should be placed neatly and should not be placed randomly, otherwise the drain valve or the grease injection valve of the valve will be broken and damaged.

4) Before the welding construction of the fully welded ball valve, confirm that the valve is welded in the fully open position to avoid damage to the ball and scratches on the sealing surface caused by welding spatter. The welding temperature between the valve seats is controlled at 140 degrees.

5) After the water pressure test is completed, the water in the valve cavity should be drained to prevent corrosion and freezing.

The valve is the control component in the fluid conveying system. It has the functions of cutting off, adjusting, diverting, preventing backflow, stabilizing, diverting, adjusting the balance of medium flow, etc.

Valves are also one of the most typical equipment in thermal systems. The quality of the valve and whether the valve is reasonably selected according to the characteristics of the valve play a decisive role in the heating quality.

Since these valves are laid in-ground wells, they are not easy to find because they will run, leak, and drip. Under normal circumstances, it will only be discovered when the user complains, the inspection is discovered, or the equipment is damaged.

We are ball valves manufacturers. Please feel free to contact us.