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The gate valve is an important industrial valve. Its opening and closing parts are gates, which control the flow of fluids by lifting and lowering the gates. Here are some key features and applications of gate valves:
Working principle: The gate valve controls the flow of fluids by the vertical movement of the gate. The fluid channel opens when the gate rises and closes when the gate falls.
Structural features: The gate valve has a simple structure and is usually composed of valve body, valve cover, valve stem, gate and other components.
Sealing performance: The sealing surface of the gate valve can be wedge-shaped or parallel, and the wedge-shaped gate can be rigid or elastic to improve the sealing performance.
Fluid resistance: Since the channel of the gate valve is linear, the fluid resistance is small, which is suitable for large flow fluid control.
Effortless opening and closing: Compared with the stop valve, the opening and closing of the gate valve is more labor-saving because the movement direction of the gate is perpendicular to the flow direction of the medium.
Installation direction: The gate valve medium can flow in any direction on both sides, which is easy to install.
Maintenance: The maintenance of the gate valve is relatively simple, but professional repairs may be required after the sealing surface is worn.
Application: Gate valves are widely used in tap water, sewage treatment, chemical industry, papermaking, food and other industries, and are suitable for occasions that require frequent opening and closing or flow adjustment.
Various types: Gate valves are of various types, including wedge-type gate valves, parallel gate valves, open-stem and concealed-stem gate valves, etc.
Advantages: The advantages of gate valves include low flow resistance, simple structure, good sealing, easy operation and strong adaptability.
Disadvantages: The disadvantages of gate valves may include wear on the sealing surface, large external dimensions, a certain amount of space required for opening, and complex structure.
As a shut-off valve, gate valves play an important role in industrial process control and are suitable for a variety of fluid control occasions.
Changzhou Xinneng Automatic Control Equipment Co., Ltd is a technology-based enterprise specializing in research, development, production, sales, and service of various electric actuators, valves, and automatic control systems. As a China Custom Industrial Gate Valves Suppliers and Electric Gate Valves Manufacturers, annual production and sales of electric valve actuators of more than 10,000 sets. In 2006 through the IS09001 quality management system certification, and obtained the national "productflame-proof certification", "explosion-proof the national industrial product production permit" issued by the National Center for AnBiao "mining productssafety sign certificate", and in cooperation with the district technology bureau established the engineering research center for intelligent digital electric actuators, 16 patent for utility model.
The company product series is complete, the actuator product has the common type, the whole type, the adjustment type, the intelligent type, the explosion-proof type BT4, CT4, MA mining type, and so on. The AUKEMA intelligent electric actuator has reached the international level, with better control than imported products, and is closer to the actual needs of the domestic market.
The company is committed to product type optimization and qualitmprovement, combined with the market demand, developed a special electric valve for coal mines, the application of thousands of major coal mining groups in the mine, improved the level of coal mine automation; Environmental protection desulfurization and off-sale electric valve is widely used in the field of power stations, contributing to environmental protection. Okuma explosion-proof series BT4, CT4 electric valve is the priority brand of oil, petrochemical, natural gas, gas, and other flameproof fields. In addition, many supporting products in metallurgy, water treatment, electric power, shipbuilding, fire, and other fields, users - praise. In recent years, the company increased the development of overseas markets, products are exported to Indonesia, Pakistan, Singapore, Nigeria, Malaysia, and other countries.
Enterprises adhering to desirable product quality will occupy the market, tread the industry with advanced science and technology, improve the service system to return the customer's purpose and strive to become a flow of valve actuator manufacturing enterprises.
Quality commitment: the company's products have three guarantees, product lifetime warranty, and satisfactory after-sales service.
We strive to provide quality products and satisfactory services for the development of automation, looking forward to your sincere cooperation!
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Read MoreIt is very important to perform regular maintenance and inspection on industrial gate valves to ensure long-term reliable operation and reduce sudden failures. Here are some key maintenance and inspection steps:
1. Regularly inspect the outside of the valve body
Check for leaks: Regularly check the valve body and connection parts for leaks, especially the sealing surface and valve stem of the valve. Any leakage may lead to reduced system efficiency or safety hazards.
Check for corrosion or wear: The outside of the valve body should be inspected for corrosion, cracks or other signs of wear. Corrosion will affect the structural strength of the valve, while wear may cause seal failure.
2. Clean the valve
Remove dirt and sediment: The inside and outside of the valve should be cleaned regularly, especially the sealing surface and valve stem. Sediment, dust or other dirt will affect the operating flexibility of the valve and may even cause the valve to stick.
Clean the valve channel: Keeping the valve channel unobstructed is the key to ensuring smooth fluid flow. Regularly remove any impurities that may block the flow channel.
3. Check the valve stem and drive device
Lubricate the valve stem: The valve stem should be lubricated regularly to reduce friction and prevent rust or sticking. When lubricating, make sure to use the appropriate lubricant and follow the manufacturer's recommendations.
Check manual or automatic drive: For gate valves equipped with electric, pneumatic or hydraulic drives, it is necessary to regularly check the working condition of the drive, pressure settings and control signals. For manual valves, check whether the valve stem and handwheel operate smoothly.
4. Check the sealing surface and valve seat
Check the valve sealing surface: Regularly check the valve sealing surface and valve seat, especially in high temperature or high pressure working environment, the sealing surface may fail due to wear or corrosion. Worn sealing surfaces should be repaired or replaced in time.
Check the valve seat: If the valve is frequently opened and closed, the valve seat may be worn or fouled, resulting in a poor seal. Regularly check and clean the valve seat, grind or replace it if necessary.
5. Regular functional testing
Operational performance test: Regularly perform functional tests on the valve to ensure that it can open and close smoothly, seal well, and respond normally to operation in the pipeline system. Manual or automatic tests can be used to confirm the performance of the valve under different working conditions.
Test the valve response time: For automatically controlled gate valves, check whether its response time meets the requirements. Slow response may indicate a problem with the valve drive.
6. Check the valve positioning and actuator
Actuator inspection: For automated valves, check the positioning accuracy and the working condition of the actuator. It may be necessary to check the components of the pneumatic, hydraulic or electric actuator to ensure that there is no leakage and abnormal wear.
Valve positioner calibration: If the valve is equipped with a positioner, calibrate the positioner regularly to ensure that the valve is positioned accurately.
7. Replace consumable parts
Valve seats, seals and valve stems: Regularly check and replace consumable parts such as valve seats, seals and valve stems. In particular, these parts are more susceptible to damage under high-frequency opening and closing or extreme working conditions.
8. Regular records and reports
Maintenance records: Record the details of each maintenance, inspection and repair to track the service life and failure history of the valve. These records help identify potential problems in advance and take preventive measures.
Develop a preventive maintenance plan: According to the working environment and usage of the equipment, develop a regular preventive maintenance plan to avoid sudden failures due to neglecting details.
9. Replace damaged parts
Replace damaged parts in time: If valve parts (such as valve stems, seals, valve seats, etc.) are found to be damaged or severely worn, they should be replaced in time instead of continuing to use them. Ignoring damaged parts for a long time may lead to more serious failures or safety issues.
10. Ensure appropriate operating conditions
Operating condition monitoring: Check whether the operating conditions such as temperature, pressure, flow rate, etc. of the fluid in the system are within the design parameter range of the valve. Operating conditions beyond the design range may accelerate the wear of the valve.
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