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The gate valve is an important industrial valve. Its enabled and closed parts are the gate, which controls the flow of fluid through the lifting of the gate. The following are some key features and applications of the gate valve:
Working principle: The lock valve controls the flow of the fluid through the vertical movement of the gate. When the slice rises, the fluid channel is opened, and the fluid channel is closed when the gate falls.
Structural features: The structure of the gate valve is simple, usually consisting 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: Because the channel of the gate valve is straight line, the fluid resistance is small, suitable for large flow of fluid control.
Equipment saving effort: Compared with the deeper valve, the opening of the gate valve is more effortless, because the movement direction of the gate is perpendicular to the direction of the medium flow.
Installation direction: The gate valve medium can flow in any direction on both sides, and the installation is convenient.
Maintenance: The maintenance of the gate valve is relatively simple, but professional maintenance may be required after the cover is worn.
Scope of application: The gate valve is widely used in tap water, sewage treatment, chemical industry, papermaking, food and other industries, which are suitable for occasions that need to be frequently closed or regulated.
There are various types: there are many types of gate valves, including wedge-type gates, parallel gates, parallel, light rods and dark rod gate valves.
Advantages: The advantages of the gate valve include small flow resistance, simple structure, good sealability, light operation, and strong adaptability.
As a cut-off valve, the gate valve plays an important role in industrial process control and is suitable for multiple 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 Globe Valvs Suppliers and Globe Valvs 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 MoreWhen selecting a globe valve in high temperature or high pressure applications, the following key factors need to be considered to ensure that the valve can operate reliably under extreme conditions:
1. Material selection
High temperature applications: In high temperature environments, the material of the valve must be able to withstand thermal expansion, corrosion and oxidation. Commonly used high temperature resistant materials include stainless steel (such as 304, 316), alloy steel (such as Inconel, Hastelloy) and ceramics. The heat resistance and corrosion resistance of the material directly affect the service life of the valve.
High pressure applications: In high pressure environments, the material of the valve must have high compressive strength and fatigue resistance. Commonly used materials include high alloy steel, carbon steel and special alloy materials that can withstand pressure shocks and maintain structural integrity.
2. Sealing performance
Under high temperature or high pressure conditions, the sealing performance of the globe valve is particularly important. It is necessary to select valve seat and valve core materials with good sealing performance, such as flexible graphite, polytetrafluoroethylene (PTFE) seals, or high temperature special sealing materials.
The sealing surface should be wear-resistant and corrosion-resistant to ensure that the valve can effectively prevent leakage even after long-term use.
3. Valve design
Valve body structure: Under high temperature and high pressure conditions, the valve body design needs to be able to withstand greater internal pressure and temperature changes. Generally speaking, choosing a double-acting valve body structure (such as a fully welded valve body) is more suitable for high-pressure applications because it has a strong pressure resistance.
Valve flap design: For high pressure and high temperature environments, the valve flap needs to be designed to be resistant to high temperature and wear, and can move flexibly under extreme pressure. The streamlined design of the valve flap helps to reduce flow resistance and wear during fluid flow.
4. Operating temperature and pressure range
When selecting a stop valve, it is necessary to confirm whether the maximum operating pressure and operating temperature of the valve meet the application requirements. The valve usually indicates its safe operating range under high temperature or high pressure, and exceeding this range may cause the valve to fail.
At high temperatures, the valve may undergo thermal expansion, so when selecting, consider the impact of temperature changes on valve size and sealing performance.
5. Valve stem and drive mode
Valve stem design: In high temperature and high pressure environments, the valve stem needs to have sufficient high temperature and corrosion resistance. Materials such as stainless steel, titanium alloy or alloy steel can provide good high temperature resistance.
Drive mode: In high temperature or high pressure environments, it is also crucial to choose the appropriate drive mode (such as manual, pneumatic, electric or hydraulic drive). The drive system should have high temperature and pressure resistance to ensure stable operation under extreme conditions.
6. Valve size and flow control
Flow regulation accuracy: In high temperature and high pressure applications, accurate flow regulation is particularly important. Due to the thermal expansion and pressure fluctuations of the fluid, it is very important to choose the appropriate stop valve size and flow regulation range.
Fluid properties: If the fluid is corrosive or has particles, it is necessary to choose corrosion-resistant and wear-resistant materials, and consider the impact of the valve on the fluid flow under long-term high temperature and high pressure.
7. Leakage rate requirements
In high temperature or high pressure applications, any small leakage may have serious consequences (such as explosion, fire, etc.). Therefore, when selecting a stop valve, it is necessary to ensure that it has an extremely low leakage rate and high sealing.
8. Reliability and safety
High temperature and high pressure applications require very high reliability of valves. You should choose a valve design with good durability and fatigue resistance, and consider using a valve with an emergency shutdown function to avoid extreme situations.
9. Convenience of maintenance and repair
Under high temperature and high pressure conditions, the maintenance of the valve may be limited by the working conditions. Therefore, the convenience of valve maintenance should be considered when selecting, and models with simple structures and long maintenance cycles should be selected as much as possible. In addition, pay attention to the long-term stability of the valve to reduce the frequency of downtime and repairs.
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