2023 COVNA Shanghai IEexpo

From April 19th to 21st, 2023, the COVNA team came to the Shanghai International Expo and launched a three-day exhibition. In this exhibition, we displayed COVNA’s new products, including intelligent irrigation electric actuator valves, pneumatic fluorine-lined control valves, intelligent explosion-proof electric actuator valves, etc., to match the new needs of various industries. At the scene, our engineers and sales staff made introductions and recommendations for the guests one by one.

COVNA was founded in 2000. After 23 years of development, we are well aware of the needs of each industry. Therefore, we hope that through this exhibition, we can showcase our innovative technologies and service concepts based on industry-oriented solutions. Provide excellent fluid automation solutions for customers in various industries.

During the 3-day exhibition, we were very happy to meet all the customers, such as customers from the boiler industry, and customers from the chemical industry, etc. We are honored to have face-to-face communication with you through the exhibition, and to understand your needs in-depth, laying a solid foundation for our follow-up cooperation.

At the same time, the COVNA team also held the 16th COVNA Salon in the exhibition hall. As the organizer, we brought a group of small and medium-sized enterprises from Guangdong to Shanghai for the salon. We intend to let more Shanghai enterprises know about Guangdong enterprises and business models through this salon, so as to obtain more business opportunities.

This exhibition has ended and we look forward to meeting you next time!

Tips For Selecting The Valve For Paint Production Industry

The paint production industry generally includes manufacturers of paints, coatings, and coatings, which are used primarily to protect and decorate buildings, automobiles, ships, and various other objects.

In the paint production industry, chemicals and raw materials such as resins, pigments, additives and thinners are commonly used to manufacture various types of paint products. These chemicals require specific mixing and handling to produce high-quality paint products.

Processing steps such as raw material preparation, premix preparation, grinding and dispersion, and adjustment of viscosity and consistency. Each step has the potential to produce toxic substances. Therefore, we need an automated paint production line to automate production, ensure that humans can stay away from harmful production environments, and ensure that human living environments are safe. Then the valve becomes essential.

Types Of Valves For The Paint Production Industry

● Ball Valve

Ball valve is a variety of valves. It has different structure options, material options and linking methods to match different production pipelines. In the paint production process, it is mainly used to control the flow and direction of liquid or gas, and is often used for mixing and transfer work in the paint production process.

● Butterfly Valve

Butterfly valve is a valve with simple structure. Its advantages are easy installation, easy operation, easy maintenance and wide application. This type of valve is usually used for rapid control of flow. Their compact design allows them to operate in tight pipes or systems.

● Gate Valve

Gate valve is a large-diameter valve and a linear operation valve. It is often used to control high-pressure liquid or gas to open or close the flow. They are commonly used in liquid piping on production lines and are designed for applications where operations are frequent.

● Check Valve

The check valve is a valve that prevents the direction flow of the medium to ensure the normal operation of the pipeline. Usually installed on the pipe, it can ensure that the liquid or gas can only flow in one direction. It can avoid problems caused by reverse flow when liquid or gas needs to flow backward.

● Control Valve

A regulating valve is a valve used to regulate pipeline pressure or flow. Through the positioner or the electric device, the opening and closing angle of the valve is precise, so as to achieve the function of precise adjustment.

Tips For Selecting The Valve

● Valve Type

For the paint production industry, it is necessary to choose a valve type that can adapt to different pressure and temperature requirements. As the viscosity of the primary product or commodity changes, the flow coefficient of the valve should be adjusted accordingly.

● Material

It is necessary to pay attention to whether the selected valve material can withstand the chemical reaction, humid environment, high temperature and high pressure during the production process, etc. Generally, stainless steel (including 304 and 316, etc.) and PVC materials are more common.

● Application Specific Requirements

In some special application areas, such as explosion hazard areas, sanitary areas, etc., valves are required to have special designs and materials. In this case, it is necessary to choose a valve that meets the corresponding standards and regulations.

Here is a brief introduction of valves for the paint production industry for your reference. Anything we could do for you, feel free to consult us to get a free valve solution. sales@covnaactuator.com

Tips For Selecting The Valve For Composite Materials Manufacturing

What Is Composite Materials Manufacturing Industry?

Composite raw materials are an important part of the plastics production industry. In the production of plastics and polymers, it is often necessary to mix different types of materials and additives together to obtain the desired properties and characteristics. Such products are known as composite materials or composite raw materials. Composite raw materials can have different chemical and physical properties, such as strength, toughness, hardness, wear resistance, flame retardancy, etc., and are suitable for many different applications, such as automotive, medical, electronic equipment, packaging, etc.

Why The Valve Is Important In Composite Materials Manufacturing?

During the production of composite raw materials, valves are often required. In this process, the valve, as one of the key devices to control the flow of the medium, plays a very important role.

In compressed air systems, multiple valves are required to control the strength and direction of airflow to ensure reliable motor operation during production. Alternatively, in plastic molding machines, valves can also control the flow and pressure of material to ensure product quality and consistency.

In the production process of composite raw materials, it is usually necessary to use liquid or gaseous media. For example, liquid raw materials, catalysts, solvents, inert gases, etc. These media need to be ensured that they are fed into the reactor in precise proportions and timing to ensure the production of high quality finished products.

Therefore, valves are an integral part of the production process of composite raw materials, which facilitates the production efficiency of the project.

Types Of Valves For Composite Materials Manufacturing

● Globe Valve

It is used to cut off or adjust the flow of medium, and is widely used in liquid and gas pipelines. By turning the handwheel, the valve can be opened or closed. This valve is convenient to use, reliable in operation and easy to maintain.

● Butterfly Valve

The butterfly valve is a quarter-turn valve. By rotating the handle, the valve plate rotates 90 degrees to open or close the valve. Butterfly valves are used in high flow and low pressure drop applications and are very effective for controlling the direction of fluid flow in a pipeline. Its small size saves installation space.

● Ball Valve

The ball valve is also a quarter-turn valve. By rotating the ball, the valve is opened or closed. Ball valves are suitable for applications that require rapid flow shutoff, and also have high corrosion resistance or high pressure resistance. Its sealing performance is good.

● Control Valve

It is used to precisely control the flow of media within the range of flow and pressure. These valves are usually equipped with indicators and control mechanisms and can be used to regulate pressure, flow and temperature in industrial processes.

All the above valves can use electric actuators or pneumatic actuators to achieve the goal of automatic control.

Tips For Selecting the Valve

● Corrosion Resistance Performance

Since liquids or gases in this industry are often highly corrosive, you should choose valves with good corrosion-resistance materials and coatings.

● Temperature Range

The temperature of the liquid or gas needs to be considered when selecting a valve. Some materials can become brittle or damaged at high temperatures, so care needs to be taken to choose the right material, such as PVDF or PP.

In conclusion, when choosing a valve suitable for the plastics and polymer compound industry, it is necessary to consider many factors comprehensively to ensure that the selected valve meets your needs and has high durability and reliability.

Here is a brief introduction of valves for the composite materials manufacturing industry for your reference. Anything we could do for you, feel free to consult us for a cost-effective valve solution. sales@covnaactuator.com

Tips For Selecting The Valve For Industrial Waste Gas Treatment

What Is Industrial Waste Gas Treatment?

Industrial waste gas treatment refers to the process of removing harmful pollutants and pollutants from the waste gas produced in industrial processes. These gases may include fumes, dust, chemicals and other hazardous substances that may pose a threat to human health and the environment.

Why Is Industrial Waste Gas Treatment So Important?

First, industrial waste gas treatment helps protect the environment and public health by reducing the amount of harmful pollutants released into the atmosphere.

Second, by implementing an effective exhaust gas treatment system, companies can reduce the energy required to operate and minimize the amount of waste that must be disposed of. Help reduce operating costs, increase efficiency, and increase profitability.

Does The Valve Need In This Application?

Valves are important components in industrial waste gas treatment systems. They help control gas flow and regulate pressure and temperature within the system. Valves are used to isolate different parts of the system for maintenance and repairs and to regulate gas flow rates to optimize process efficiency.

Valves play an important role in ensuring the safe and efficient operation of industrial waste gas treatment systems.

What Types Of Valves Are Used In Industrial Waste Gas Treatment?

The specific valve used in an industrial waste gas treatment system will depend on the design of the system, the specific process involved, and other factors such as the temperature and pressure of the gas being treated.

● Linear Option Valves – Gate Valve or Globe Valve

The gate valve is a valve with a large caliber, a simple structure, and two-way flow. However, the gate valve can only be fully opened or fully closed, and is used for circulation or cut-off.

The globe valve, like the gate valve, is a linear operation valve. The globe valve can determine the angle of opening or closing according to the requirements of the pipeline, and is used for rough adjustment.

The above two valves are suitable for pretreatment and incineration processing steps. Pretreatment is a process of cooling and filtering the gas, the medium contains large particles and dust. Incineration, on the other hand, is the burning of gases at high temperatures to break down pollutants. Gate valves and globe valves are therefore suitable for these two processing steps.

● Quarter Turn Valves – Ball Valve or Butterfly Valve

Ball valve is a commonly used valve with a simple structure and convenient operation. It has different structures and connection methods to match different pipelines.

A butterfly valve is a valve that opens or closes the valve plate by rotating the handle. Its advantages are easy installation and easy handling.

The above two valves are suitable for the two processing steps of absorption and adsorption. The use of ball valves and butterfly valves can effectively adjust the gas flow and adjust the pipeline pressure.

The use of valves in industrial waste gas treatment systems is critical to ensuring the safe and efficient operation of the system.

How To Select A Suitable Valve For This Application?

● Material Compatibility

Valve materials should be compatible with the gas being processed and other materials in the system. For example, if the gas is corrosive, the valve material should be corrosion resistant to ensure long-term durability and reliability.

● Temperature And Pressure

The valve should be able to withstand the temperature and pressure of the gas being processed. If the temperature or pressure exceeds the valve’s capabilities, it can fail or malfunction, causing safety hazards and system inefficiencies.

● Flow And Capacity

The valve should be able to handle the flow and capacity required by the system. If valves are too small or too large, they may not be able to effectively regulate gas flow, affecting process efficiency and system performance.

● Maintenance And Repair

Valves should be easy to maintain and repair to minimize downtime and ensure optimum system performance. This may include features such as accessible valve assemblies, easily replaceable parts, and clear labeling and documentation.

● Compliance

Valves should comply with relevant regulations and standards for industrial waste gas treatment. This may include requirements for valve material, design and performance specifications.

Selecting the right valve contributes to safe, efficient and effective exhaust gas treatment.

The above is the introduction of valves that can be used for industrial waste gas treatment. Anything we could do for you, feel free to consult us to get a free valve solution. sales@covnaactuator.com