China Wuhan Grat Control Valve Co., Ltd. Company Cases

Valves are essential components in industrial systems, ensuring safe and efficient operations. In this case study, we examine the application of GRAT's electric butterfly valve in a hydropower station, showcasing its reliability and performance in a water control system.       Application Case: GRAT Electric Butterfly Valve in Hydropower Stations   Application: Hydropower Station Dam Flow Release Medium: Water (Ambient Temperature) Nominal Pressure: PN16 Sizes: DN100 / DN150 Material: SUS304 Stainless Steel Connection Type: Wafer Style Operation Mode: On-Off Power Supply: DC24V / DC220V Operational Date: August 2018 Location: Fujian, China   This electric butterfly valve is used to control the water discharge at a hydropower station dam, playing a crucial role in environmental management. Constructed with SUS304 stainless steel, it ensures long-term durability and resistance to corrosion in a water-based environment. Key Benefits: Durable & Reliable: Made from SUS304 stainless steel, ensuring long-lasting performance. Precise Control: On-off operation enables accurate flow regulation. Energy-Efficient: Low power requirements (DC24V / DC220V) for cost-effective operation. Long Service Life: Designed to last for 5 years with minimal maintenance.   GRAT’s electric butterfly valve provides a reliable solution for water flow control in hydropower applications. Its durability, energy efficiency, and ease of installation make it ideal for demanding environments like dams and hydropower stations.     > GRAT Wafer Electric Butterfly Valve

The chemical industry operates under stringent conditions, with safety, precision, and reliability at the forefront of every process. Key to maintaining these standards are components like control valves, which are integral in handling aggressive media, high pressures, and extreme temperatures. This case study details the application of the GRAT Pneumatic V-Type Control Ball Valve in steam regulation within a chemical production environment, demonstrating its effectiveness in managing the specific demands of saturated steam control. Steam, particularly saturated steam, is frequently used in chemical processes for heating, sterilization, and other applications. However, saturated steam poses unique challenges for valve control. Not only does it require robust construction to handle high temperatures and pressure, but any leaks or malfunctions could have severe safety implications, including exposure risks and potential harm to system stability.     The GRAT Pneumatic V-Port Control Ball Valve is designed to meet these rigorous requirements, specifically tailored for precise flow regulation and durability in challenging conditions.   Key Features and Advantages:   Enhanced Safety: With its high-grade materials and fail-safe design, the GRAT valve minimizes risks associated with steam leaks and offers reliable performance in case of emergencies. Precise Control: The V-Port design enables more precise modulation of steam flow compared to traditional ball valves, improving overall process control. Longevity: The hard sealing with Stellite significantly extends the lifespan of the valve, even under continuous exposure to high temperatures and pressures. Efficiency: Consistent steam flow regulation leads to optimized energy use, reducing operational costs over time.       Specifications: Size: DN50 Material: SUS304 stainless steel Sealing: Hard seal with Stellite overlay Medium: Saturated steam Control Signal: 4-20mA Operation Mode: Single-acting The successful application of the GRAT Pneumatic V-Type Control Ball Valve in a chemical industry setting highlights its capability to handle the unique challenges posed by saturated steam. Its robust construction, precise control features, and fail-safe design make it a valuable asset in hazardous environments where both safety and performance are paramount.   As the chemical industry continues to push boundaries in process demands, reliable and specialized components like the GRAT V-Port valve will remain indispensable.       > GRAT Pneumatic V-Type Control Ball Valve

In aggressive chemical industries, where equipment is exposed to highly corrosive substances, ensuring durability and reliability is paramount.   GRAT’s corrosion-resistant electric control valve, installed in a facility processing chlorine gas with fluoride ions, is specifically designed to withstand such challenging conditions. Operating effectively within a temperature range of 0 to 120°C, this valve showcases both robust construction and advanced technology.     Key Features and Advantages: Exceptional Corrosion Resistance: Constructed with a cast steel body and core fully lined with F46, the valve provides superior protection against highly corrosive media, ensuring longevity and operational stability. Advanced Technology: Equipped with patented PPD positioning technology and high-temperature automatic cooling, the valve adapts efficiently to fluctuating operating conditions, maintaining precise control. Seamless Integration into Automated Systems: Supporting a 4-20mA communication signal and DCS compatibility, the valve enables smooth integration into plant-wide automation, enhancing process efficiency.     This specialized valve is designed to endure the extreme demands of highly corrosive environments. Below are the key technical specifications that make it fit for this challenging application. Valve Body Material: Cast steel (fully lined with F46) Valve Core Material: Cast steel (fully lined with F46) Seal: F46 Medium: Chlorine gas (with fluoride ions) Medium Temperature: 0-120°C Power Supply: AC220V Special Technology: Patented PPD positioning technology, high-temperature automatic cooling technology Flow Characteristics: Equal percentage Communication Signal: 4-20mA DCS System: Supports operation and communication with DCS systems Operation Start Date: December 2010 Expected Valve Lifespan: 3 years (safety period)   Since its commissioning in December 2010, this control valve has demonstrated consistent, reliable performance, proving its suitability for applications within harsh chemical processes. > GRAT Electric Control Valve

Thailand, strategically located in Southeast Asia, is a nation rich in oil and gas resources, with a history dating back to the mid-19th century as a producer. The country's natural gas reserves are estimated at 54.65 billion cubic meters, and oil reserves at 164 million tons, playing a pivotal role in its economic growth and reducing dependence on imported refined oil products.   In this context, the Thai oil and gas industry demands robust valve technology to ensure efficient extraction, processing, and transportation of hydrocarbons, with a focus on safety, reliability, and environmental sustainability. Valves play an essential role in Thailand's oil and gas industry, particularly when it comes to tackling the corrosiveness of oil wells, the high pressures of deep-sea drilling, and the extreme temperature conditions encountered.     A Thai customer who has long cooperated with our company is a company engaged in the development, production, and installation services of oil and gas measurement and analysis equipment. The company mainly undertakes government oil and gas design, installation, and transportation projects. Our products that meet the needs are as follows: (1) Explosion-proof electric regulating valves (V-shaped and rectangular ports) Model: EV - 50PCUN64RCFEX, EJ - 50PCUN64RCFEX Voltage: DC24V Diameter: DN50 Input and output signals: 4 - 20mA Valve body material: WCB Connection method: Flange Protection level: IP67 Explosion-proof level: Exid II BT4 Flow rate: 0 - 200m³/h

As environmental awareness grows, wastewater treatment has become essential. Electric V-type control valves offer precise flow regulation, making them invaluable in sewage treatment. Key Features of Electric V-Type Control Valves Precision Control: These valves use advanced actuators for accurate flow regulation, even in high-pressure or high-temperature conditions. Corrosion Resistance: Built with durable materials, they withstand harsh chemical environments, and their robust actuators ensure longevity. Ease of Maintenance: Simple design allows easy adjustments, with real-time monitoring for quick issue detection.     Practical Application Cases   Next, let's illustrate the application of GRAT electric V - type regulating valves in the sewage industry through three practical application cases.   Case 1   A certain urban sewage treatment plant needed to precisely control its sewage treatment process to ensure that the sewage could meet the discharge standards. They chose electric V - type regulating valves and applied them to key links such as the influent pump house and the aeration tank. Through precise flow control, the sewage treatment plant successfully achieved stable adjustment of water quality and improved the efficiency of sewage treatment. At the same time, due to the high corrosion resistance of the electric V - type regulating valves, they exhibited excellent performance and reliability in the sewage environment.   Case 2   A large industrial park has multiple enterprises, and its sewage discharge requires strict treatment and monitoring. To achieve this goal, the park adopted electric V - type regulating valves to control the sewage flow. Through precise flow control, the stable operation of the sewage treatment equipment was ensured, and the sewage discharge could be effectively monitored and controlled. This is not only beneficial to environmental protection but also to the sustainable development of enterprises.   Case 3 A large river treatment project needed to effectively treat and discharge sewage. To achieve this goal, the project side adopted electric V - type regulating valves to control the sewage flow. Through precise flow control, the project side could ensure the stable operation of the sewage treatment equipment and effectively monitor and control the sewage discharge. This is not only beneficial to environmental protection but also to the sustainable development of the city.   Conclusion GRAT electric V - type regulating valves play an important role in the sewage industry. They can not only achieve precise flow control, improve the efficiency and quality of sewage treatment, but also possess characteristics such as high corrosion resistance, durability, and easy maintenance, meeting the high requirements of the sewage treatment industry.  

In the petrochemical heating industry, controlling steam flow in boilers demands valves with high resistance to temperature and corrosion. GRAT pneumatic control valves have been successfully applied in this setting, showcasing their durability and adaptability in regulating and shutting off boiler steam. This case highlights the exceptional performance and reliability of GRAT valves in high-temperature steam applications.       Special Features and Performance The valve’s single-acting pneumatic actuator ensures reliable operation with a quick and effective response time for both regulation and shut-off tasks.   With a robust SUS316L body, the valve provides excellent resistance to corrosion and high-temperature conditions, ensuring long-term durability and performance stability. Since its commissioning in 2008, this valve has contributed significantly to safe and precise steam flow management in the petrochemical heating process.   Technical Insights The control signal of 4-20mA enables the valve to integrate seamlessly with the DCS (Distributed Control System) for automated and remote monitoring, contributing to improved operational efficiency and system reliability. The single-acting actuator design is energy-efficient, suitable for high-demand environments where consistent and precise flow regulation is critical.     Application Details Industry: Petrochemical heating equipment Valve Type: Pneumatic control valve (single-acting) Valve Size: DN25 Body Material: SUS316L stainless steel Medium: Boiler steam Medium Temperature: 250°C Control Signal: 4-20mA Functions: Flow regulation and shut-off Operational Start Date: June 2008 Since its commissioning in 2008, the GRAT pneumatic control valve has withstood years of rigorous high-temperature steam applications, consistently delivering stable control and shut-off performance. Should you have similar requirements or questions, please feel free to contact our team for further information.   > GRAT Pneumatic Control Ball Valve 

In March 2016, GRAT successfully deployed a series of pneumatic explosion-proof on-off ball valves in a natural gas pipeline project in Qinghai, China. These valves, crafted from SUS304 stainless steel and equipped with advanced explosion-proof technology (Exd II BT6), have been operational for over eight years, ensuring safe and efficient operation under demanding industry standards.    The natural gas pipeline in Qinghai faced several challenges, including: Safety: Explosion-proof equipment was essential due to the volatile nature of natural gas. Durability: Long-term operation in varying temperatures and environmental conditions. Efficiency: The valve needed to provide precise on-off control with minimal maintenance.     GRAT's pneumatic explosion-proof ball valves met these requirements through innovative design, incorporating:   Compact structure and lightweight design for ease of installation. Fire and explosion-proof features to enhance safety. Low flow resistance and high sealing performance, ensuring operational efficiency. Flexible adjustment capabilities, allowing ±5° fine-tuning at both 0° and 90° positions.   Specifications: Medium: Natural gas (at ambient temperature) Nominal Pressure: PN64-PN100 Size: DN80 / DN100 Material: SUS304 Connection Type: Flanged Operation Mode: On-off control Power Supply: DC24V Explosion-Proof Rating: Exd II BT6 Design Life: 5-8 years Operating Date: March 2016 Location: Qinghai, China     The installed ball valves, with flange connections, operate via DC24V power and are driven by dry or lubricated compressed air at 2.5-8 bar. These valves provide seamless on-off functionality, supporting the natural gas pipeline's operational needs while complying with strict safety regulations. Their design life of 5-8 years has been exceeded without significant performance degradation.   GRAT's pneumatic explosion-proof on-off ball valves have proven to be a reliable and effective solution for the natural gas industry. By combining advanced technology with industry expertise, GRAT continues to support critical infrastructure projects worldwide. For inquiries and technical support, please contact us.     > GRAT Explosion-Proof Pneumatic On-Off Ball Valve

Efficient flow regulation and reliable on-off operations are critical in the petroleum industry, especially in harsh environments. GRAT's electric and manual (worm gear) ball valves have been trusted for their performance and durability in various applications. Here, we present an application case highlighting their use in crude oil flow regulation and wastewater cut-off operations in Qinghai.   In this project, GRAT electric and manual ball valves were installed to manage crude oil flow rates and control wastewater disposal effectively: Durable Materials: SUS304 construction ensures resistance to corrosive and high-temperature mediums. Flexible Operation: Electric and manual options meet both automation and manual override needs. Reliability: Designed for a 5-year lifespan under consistent operation.     Specifications: Medium: Crude oil, wastewater (35℃–70℃) Nominal Pressure: PN25 Size: DN100 / DN150 Material: SUS304 Connection Method: Flanged Operation Mode: Proportional regulation (4-20mA) / On-off Working Power: AC380V Design Life: 5 years Operation Date: April 2015   GRAT's electric and manual ball valves have proven to be a reliable solution in the petroleum industry. Their robust design and operational flexibility ensure smooth functionality in complex and challenging applications. Contact us to explore how GRAT valves can enhance your industrial processes.   > GRAT Electric Actuated Ball Valve

Managing crude oil flow efficiently in the petroleum industry requires equipment capable of withstanding challenging operating environments. In this case study, we explore the application of these valves in regulating crude oil flow containing water in Qinghai, China.   The petroleum industry presents challenges such as corrosive mediums and explosive atmospheres. Crude oil mixed with water can rapidly corrode standard valves, but GRAT's use of SUS304 stainless steel provides excellent corrosion resistance, ensuring a design life of 5 years. Additionally, oilfield environments often involve volatile conditions, which are safely managed with GRAT's Exd Ⅱbt4-certified explosion-proof design.     Specifications: Medium: Water-containing crude oil (30℃–65℃) Nominal Pressure: PN16 / PN25 / PN100 Size: DN25 / DN40 / DN50 Material: SUS304 Connection Method: Flanged Operation Mode: Proportional regulation (4-20mA) Explosion-Proof Level: Exd Ⅱbt4 Working Power: AC380V Design Life: 5 years Operation Date: October 2016 Location: Qinghai, China   GRAT's explosion-proof electric control valves have proven their value in the harsh conditions of the petroleum industry. With their superior material, safety features, and precision, these valves deliver efficiency and reliability tailored to oilfield operations. Contact us to learn how GRAT products can address your unique industrial needs.   > GRAT Explosion-Proof Electric Control Valve

Application:Low-load pneumatic butterfly valve in steel industry   Size:DN500 Pressure:1.0Mpa Connection:Flange Medium:Coke oven gas Temperature:350℃ Function:Switch on/off Action:Single Power:DC24V Running time:May,2007

Application:Wafer electric butterfly valve in enviromental water treatment   Function:Switch on/off Product:Wafer stainless steel electric butterfly valve Material:SUS 304 Connection:Wafer Pressure:1.6Mpa Medium:Industrial sewage Power:AC220V Predict lifetime:30000 times actions in 5 years

Application:Electric ball valve in industry refrigeration   Medium:Freon Control way:Cut off Material:CF8 Seal:PTFE+HNBR Temperature:-30~60℃ Pressure:1.6Mpa Running time:May,2013 Predict lifetime:5~8 years Control signal:switch signal