Wuhan Grat Control Valve Co., Ltd.

Application Background In industrial combustion systems, the accuracy and stability of air volume control directly impact combustion efficiency, energy consumption, and operational safety. The customer required a highly reliable air volume regulation system for an 800mm burner damper to meet long-term continuous operation, rapid response, and low maintenance demands. GRAT provided a dedicated guide vane motor control solution, which was put into operation in May 2012 and has been functioning stably since. Operating Conditions Size: DN800Power Supply: AC220VControl Signal: On/OffFeedback Signal: 0–1 kΩ ResistanceDesign Life: 8 years (failure-free)Commissioning Date: May 2012Function: Airflow Regulation Product Advantages & Features High-Precision Control: Closed-loop feedback control technology enables real-time damper position calibration with an air volume regulation accuracy error of < ±2%. It supports 0-1kΩ analog signal feedback and is compatible with mainstream PLC/DCS control systems for seamless integration. Durability and Reliability: Core components are built with metal gears and high-temperature-resistant insulating materials, ensuring stable performance under long-term, high-intensity operation. The fully sealed structure effectively prevents the ingress of dust and moisture, making the guide vane motor suitable for harsh industrial environments. Low Maintenance Requirements: The brushless motor design eliminates carbon dust accumulation, extending the service life of the guide vane motor. The modular structure allows for quick component replacement, significantly reducing downtime and maintenance needs. Safety and Compatibility: The equipment includes overload and overheating protection functions to prevent damage. It supports universal AC220V power input and is compatible with most global industrial power standards, ensuring safe and reliable operation. Performance Results Stable Operation Record: The guide vane motor achieved failure-free operation for over 10 years since May 2012, fully meeting design life requirements. Energy Efficiency Improvement: Precise air volume control optimizes combustion air ratio, improving combustion efficiency by approximately 8%. Reduced Maintenance Costs: No major failures occurred during the period, with maintenance costs only 30% of the industry average. Customer Feedback: The guide vane motor system responds quickly and controls accurately, significantly reducing the frequency of manual intervention, making it suitable for automation upgrade projects. GRAT guide vane motors are the preferred choice for air volume control in industrial combustion systems due to their adaptability, reliability, and cost-effectiveness. We provide global customers with high-performance, long-life control products to support intelligent and efficient operations. Through continuous innovation, we help industries such as petrochemicals, steel metallurgy, and power station boilers achieve smart upgrades and energy savings, creating sustainable value. For more details, contact our technical team for full support and collaboration in building efficient, reliable control systems.

Application Background Secondary water supply systems in high-rise buildings represent critical infrastructure in modern urban construction, where their stability and reliability directly impact residents’ water safety and quality of life. In this context, performance requirements for core system components—particularly valve products—have become increasingly stringent. GRAT’s SS316L sanitary clamp-type electric ball valve, developed for the high-end secondary water supply market, is specifically designed for high-standard water supply environments. It has established an integrated intelligent pump-valve solution through mature collaboration with German WILO Wilo pump equipment. Operating Conditions Medium: Potable water; clean domestic water; occasionally exposed to low-concentration chloride disinfectants Working Pressure: 0.6-1.6 MPa Temperature: -10°C to 120°C Connection: Sanitary clamp-type Control Signal: 24V DC/220V AC; supports 4~20mA analog or pulse control Installation Locations: Pump outlet, zoned water supply pipelines, water tank inlet/outlet Operating Frequency: ≥50 open-close cycles daily Product Advantages & Features Extended Service Life Design: Utilizes precision molding technology and high-accuracy motor drive systems, ensuring over 200,000 open-close cycles with maintenance-free operation for more than 10 years. Sanitary Material Certification: Valve body constructed from SS316L ultra-low carbon stainless steel with mirror polishing, FDA compliant, fully meeting potable water hygiene standards. Intelligent Control Technology: Built-in overload protection and temperature sensing Enables start-stop synchronization and flow matching control with WILO pumps Real-time feedback of valve position status to pump control systems Proprietary Sealing Technology: Employing PTFE-enhanced composite sealing materials with zero-leakage design, significantly exceeding API 6D standard requirements. Rapid Clamp Connection: Features interface standards compatible with WILO pumps, enabling tool-free assembly/disassembly, compliant with 3A/SMS/DIN standards. Performance Results In practical applications, the water supply system comprising GRAT electric ball valves and Wilo pumps demonstrates exceptional performance: Enhanced Reliability: 85% reduction in failure rate compared to conventional valves, with 30% improvement in pump-valve collaborative efficiency Energy Consumption Optimization: Flow resistance coefficient below 0.02, achieving 12-15% energy savings compared to standard valves Water Quality Assurance: Third-party testing confirms zero contamination after prolonged use Integration Efficiency: 100% compatibility with mainstream pump equipment including WILO, reducing commissioning time by 60% Lifecycle Cost Reduction: 40% decrease in comprehensive operational costs with a payback period of less than 18 months With accelerating urbanization and increasing building heights, traditional water supply methods can no longer meet the pressure and quality requirements at the endpoints of high-rise buildings, making secondary water supply systems essential solutions. The GRAT electric ball valve series has been successfully implemented in numerous international high-end water supply projects, including super high-rise building complexes in the Middle East, pipeline systems for European star-rated hotels, and water supply systems for medical facilities in the Asia-Pacific region. These applications establish new reliability benchmarks for the global secondary water supply industry and provide technologically advanced valve solutions for water supply equipment enterprises worldwide.

In mining production, electric control valves for slurry play a critical role as key fluid control devices. The primary function of these valves is to regulate the flow and pressure of slurry, ensuring the stability and continuity of mining operations. This document outlines the working principles, characteristics, and applications of electric slurry control valves in mining production. 1. Working Principle of Electric Slurry Control Valves Electric slurry control valves consist of an electric actuator and a valve body. The electric actuator receives signals from the control system and drives the valve body to perform opening, closing, or regulating operations. When the valve opens, slurry flows through, and the flow rate and pressure are adjusted accordingly. By modulating the valve opening, precise control over slurry flow and pressure can be achieved. 2. Features of Electric Slurry Control Valves High Efficiency: These valves employ advanced electric drive technology, enabling rapid response and precise control to adapt quickly to changes in the production process. Reliability: Electric slurry control valves offer high reliability and stability, capable of operating consistently in harsh mining environments while minimizing failure rates. Intelligent Operation: Modern electric slurry control valves are typically equipped with smart sensors and control systems, enabling remote monitoring and automated control to enhance production efficiency. Safety: The design of these valves prioritizes safety, incorporating features such as explosion-proof and corrosion-resistant capabilities to ensure secure operation. Wear Resistance: The fixed-ball hemispherical structure provides excellent wear resistance. Additionally, the V port design on the valve core generates a shearing force when rotating against the hard seal, cutting fibers and preventing jamming. 3. Applications of Electric Slurry Control Valves in Mining Production Mineral Processing Control: In mineral processing, precise regulation of slurry flow and pressure is essential. Electric slurry control valves enable real-time monitoring and adjustment of flow rates, ensuring stability and efficiency in the beneficiation process. Tailings Management: Tailings treatment is a critical aspect of mining production. These valves can be used to control the flow and pressure of tailings discharge, ensuring efficient and safe management. Mine Drainage: Mine drainage is vital for maintaining mining operations. Electric slurry control valves allow precise control of flow and pressure in drainage pipelines, ensuring the proper functioning of the drainage system. Heap Leaching Operations: Heap leaching is a method for metal extraction. Controlling slurry flow and pressure during this process is crucial. Electric slurry control valves provide accurate regulation, improving metal recovery rates. 4. Conclusion In summary, electric control valves for slurry are indispensable in mining production due to their efficiency, reliability, intelligence, and safety. As technology continues to advance and mining production evolves, the application prospects for electric slurry control valves are expected to expand further. > GRAT Electric Slurry Control Valves

In the modern industrial sector, valves serve as critical equipment for fluid control, and their performance and reliability are of great significance in ensuring the stable operation of systems. The UPVC electric ball valve has garnered widespread attention due to its excellent corrosion resistance and broad application scenarios. Corrosion Resistance and Material Characteristics The UPVC electric ball valve is constructed from high-quality UPVC (unplasticized polyvinyl chloride) resin, which offers exceptional corrosion resistance and can withstand erosion from various chemical media. Whether in acidic, alkaline, or saline environments,it maintains stable performance, effectively extending its service life. Additionally, UPVC material possesses excellent mechanical properties and processability, making the valve easier to machine and install during manufacturing. Temperature Adaptability The UPVC electric ball valve is designed with full consideration of temperature factors. It can operate normally within a temperature range of -40°C to +80°C, demonstrating strong adaptability to meet fluid control requirements in various harsh environments. Furthermore, UPVC material maintains stable performance even at high temperatures, preventing valve failure due to temperature fluctuations. Connection Methods The UPVC electric ball valve employs multiple connection methods to accommodate different pipeline system requirements. Common connection methods include threaded union connections and flange connections. These connection methods are not only easy to install but also provide excellent sealing performance, effectively preventing media leakage. Additionally, the UPVC electric ball valve features quick installation and disassembly, facilitating maintenance and replacement. Application Scenarios Thanks to its corrosion resistance, temperature tolerance, and ease of installation, the UPVC electric ball valve is widely used in numerous fields. In industries such as chemical, petroleum, pharmaceutical, and food processing, it can be used to control the flow of corrosive media, high-temperature media, and high-viscosity media. Moreover, the UPVC electric ball valve plays an important role in municipal construction, water treatment, and environmental protection projects, providing reliable support for fluid transportation. Conclusion In summary, the UPVC electric ball valve, with its outstanding corrosion resistance, excellent material characteristics, broad temperature adaptability, and flexible connection methods, has become an ideal choice for fluid control in modern industrial applications. In practical use, its superior performance and reliability provide robust support for fluid control in various scenarios. With continuous technological advancements and process improvements, the UPVC electric ball valve will continue to play a vital role in the field of fluid control in the future.

Background GRAT Automation Solutions provide critical electric ball valve solutions for railway insulator washing vehicles, which are essential for maintaining electrified rail systems. By addressing limitations of traditional manual or pneumatic valves—such as low precision, slow response, and poor environmental adaptability—GRAT's DN65 and DN125 pipeline solutions significantly enhance automation and reliability in regular cleaning operations that ensure insulation performance and operational safety. These solutions are now widely deployed across public railway networks. Operating Conditions Specification Value Size DN65/125 Medium Water Working power supply DC 24V Temperature -10°C~45°C Nominal pressure 1.6MPa Material SUS304 Connection Flange type Input signal On/Off Output signal Passive contacts Design life 5-8 years Operating date February 2022 Duty station Public railway system Product Advantages & Features High Environmental Adaptability: The SUS304 stainless steel valve body offers excellent corrosion resistance and mechanical strength, while the IP67 protection rating ensures stable operation in high-humidity and salt-spray environments. Low Power Control: Operates on DC24V power, fully compatible with railway vehicle electronic control systems, featuring low power consumption for opening/closing and ensuring safe and reliable performance. Fast Response and High Sealing: The ball valve structure enables rapid opening/closing (≤2 seconds) and supports high-frequency operation. Flange connections and a precision ball core design ensure zero leakage at 1.6MPa working pressure, maintaining stable flushing water pressure. High-Cycle Durability: Designed for continuous railway operation, it utilizes reinforced PTFE seals and requires no maintenance for 12 months or 50,000 operations. Performance Results Since its deployment in February 2022, GRAT automation solutions have been widely adopted in water washing vehicles across multiple public railway bureaus, demonstrating the following performance: Reliability Improvement: Achieves a 100% valve opening/closing success rate with over 12 months of trouble-free operation, significantly reducing maintenance costs. Optimization of Flushing Efficiency: Electric control enables precise water spray timing, increasing per-vehicle flushing efficiency by approximately 20%. System Compatibility: Enables seamless integration with existing onboard PLC systems, supporting remote control and status feedback for centralized operation and maintenance management. GRAT automation solutions, with its exceptional environmental adaptability, precise control performance, and long-lasting stability, has become a key innovative solution in the field of railway insulator water washing. Through continuous technological innovation and strict quality control, we provide smarter and more efficient equipment support for railway operation and maintenance, contributing to the intelligent and green development of China’s railway industry. GRAT will continue to deepen its efforts in the industrial valve sector, creating value for global customers with higher quality products and services while promoting technological advancement in the industry.

Application Background The textile dyeing and printing industry extensively uses highly corrosive media such as sodium hydroxide and hydrogen peroxide, posing severe challenges to the corrosion resistance of valves. Traditional valves are prone to leakage and downtime due to corrosion, significantly impacting production continuity and product quality. To address this need, the GRAT fluorine-lined electric control ball valve series is specifically designed for highly corrosive applications. With exceptional corrosion resistance and precise control capabilities, it effectively ensures stable and efficient process flows. Operating Conditions Medium Sodium hydroxide and hydrogen peroxide (10% concentration) Temperature Normal Voltage 220V Seal Soft seal Valve Body Material Fully PTFE-lined Connection Flanged Operation Proportional control Control Signal 4-20 mA with feedback Maximum Flow Rate 500 L/h Function Corrosion resistance Product Advantages & Features The GRAT fluorine-lined electric control ball valve offers the following core advantages tailored for highly corrosive media control applications: Exceptional Corrosion Resistance The valve body cavity and all media-wetted metal components are fully lined with thick-walled polytetrafluoroethylene (PTFE). PTFE exhibits strong chemical inertness, resisting corrosion from various strong acids, alkalis, and organic solvents. It effectively addresses corrosion issues caused by sodium hydroxide, hydrogen peroxide, and other aggressive media, significantly extending the valve’s service life. Precise Control Performance Equipped with a high-performance intelligent electric actuator, the valve achieves accurate proportional control. The system ensures minimal deviation by maintaining backlash, dead zone, and feedback error all within ≤0.5%. This guarantees stable and reliable processing, meeting the stringent requirements of dyeing and printing processes for precise ratio control. Reliable Sealing Performance The soft seal design ensures tight contact between the valve seat and the ball. Excellent sealing is maintained even under low-pressure conditions, preventing leakage. This avoids media waste and environmental pollution while ensuring operational safety. Robust Structural Design The valve body is forged from high-strength carbon steel and lined with high-quality PTFE, combining structural strength with corrosion resistance. The flanged connection complies with international standards, enabling easy installation and reliable integration into various pipeline configurations. Flexible Automation Integration The valve supports 4-20 mA position feedback signals, allowing seamless integration into DCS, PLC, and other automation control systems. It enables remote monitoring and intelligent control, providing foundational support for digital workshops and smart manufacturing upgrades. Performance Results Since its deployment in customer production lines, the GRAT fluorine-lined electric control ball valve has demonstrated outstanding performance and reliability: Extended Equipment Lifespan: The valve has operated continuously in highly corrosive media for over 12 months with no signs of corrosion on the lining. Its service life is projected to be three times longer than that of conventional valves. Improved Control Accuracy: The proportional control function is precise and reliable, reducing process parameter fluctuations by approximately 40%. This significantly enhances dye solution ratio consistency and improves product quality. Reduced Maintenance Costs: Stable and reliable valve operation eliminates the need for regular replacement or repairs, reducing downtime and spare part consumption. Overall maintenance costs have been lowered by more than 60%. Eliminated Media Leakage: The soft seal structure ensures long-term zero leakage, improving workshop environmental conditions and reducing material loss. This complies with environmental and safety production standards. This success story demonstrates that the GRAT fluorine-lined electric control ball valve, with its exceptional anti-corrosion properties of PTFE lining, has become an ideal solution for corrosive media control in the textile dyeing and printing industry. Additionally, this product series is widely used in various dye and chemical processing applications in the dyeing chemical industry, control of toxic and hazardous chemicals in pesticide production, and storage and transfer of high-concentration acids and alkalis in the acid and alkali manufacturing industry. We look forward to sharing GRAT’s products and technologies with more global customers, providing safe, reliable, and efficient control valve solutions for your processes.

Application Background The textile dyeing and printing industry extensively uses highly corrosive media such as sodium hydroxide and hydrogen peroxide, posing severe challenges to the corrosion resistance of valves. Traditional valves are prone to leakage and downtime due to corrosion, significantly impacting production continuity and product quality. To address this need, the GRAT fluorine-lined electric control ball valve series is specifically designed for highly corrosive applications. With exceptional corrosion resistance and precise control capabilities, it effectively ensures stable and efficient process flows. Operating Conditions Parameter Specification Medium Sodium hydroxide and hydrogen peroxide (10% concentration) Temperature Normal Voltage 220V Seal Soft seal Valve Body Material Fully PTFE-lined Connection Flanged Operation Proportional control Control Signal 4-20 mA with feedback Maximum Flow Rate 500 L/h Function Corrosion resistance Product Advantages & Features The GRAT fluorine-lined electric control ball valve offers the following core advantages tailored for highly corrosive media control applications: Exceptional Corrosion Resistance The valve body cavity and all media-wetted metal components are fully lined with thick-walled polytetrafluoroethylene (PTFE). PTFE exhibits strong chemical inertness, resisting corrosion from various strong acids, alkalis, and organic solvents. It effectively addresses corrosion issues caused by sodium hydroxide, hydrogen peroxide, and other aggressive media, significantly extending the valve’s service life. Precise Control Performance Equipped with a high-performance intelligent electric actuator, the valve achieves accurate proportional control. The system ensures minimal deviation by maintaining backlash, dead zone, and feedback error all within ≤0.5%. This guarantees stable and reliable processing, meeting the stringent requirements of dyeing and printing processes for precise ratio control. Reliable Sealing Performance The soft seal design ensures tight contact between the valve seat and the ball. Excellent sealing is maintained even under low-pressure conditions, preventing leakage. This avoids media waste and environmental pollution while ensuring operational safety. Robust Structural Design The valve body is forged from high-strength carbon steel and lined with high-quality PTFE, combining structural strength with corrosion resistance. The flanged connection complies with international standards, enabling easy installation and reliable integration into various pipeline configurations. Flexible Automation Integration The valve supports 4-20 mA position feedback signals, allowing seamless integration into DCS, PLC, and other automation control systems. It enables remote monitoring and intelligent control, providing foundational support for digital workshops and smart manufacturing upgrades. Performance Results Since its deployment in customer production lines, the GRAT fluorine-lined electric control ball valve has demonstrated outstanding performance and reliability: Extended Equipment Lifespan: The valve has operated continuously in highly corrosive media for over 12 months with no signs of corrosion on the lining. Its service life is projected to be three times longer than that of conventional valves. Improved Control Accuracy: The proportional control function is precise and reliable, reducing process parameter fluctuations by approximately 40%. This significantly enhances dye solution ratio consistency and improves product quality. Reduced Maintenance Costs: Stable and reliable valve operation eliminates the need for regular replacement or repairs, reducing downtime and spare part consumption. Overall maintenance costs have been lowered by more than 60%. Eliminated Media Leakage: The soft seal structure ensures long-term zero leakage, improving workshop environmental conditions and reducing material loss. This complies with environmental and safety production standards. This success story demonstrates that the GRAT fluorine-lined electric control ball valve, with its exceptional anti-corrosion properties of PTFE lining, has become an ideal solution for corrosive media control in the textile dyeing and printing industry. Additionally, this product series is widely used in various dye and chemical processing applications in the dyeing chemical industry, control of toxic and hazardous chemicals in pesticide production, and storage and transfer of high-concentration acids and alkalis in the acid and alkali manufacturing industry. We look forward to sharing GRAT’s products and technologies with more global customers, providing safe, reliable, and efficient control valve solutions for your processes.

GRAT IoT mini electric actuators have gained widespread industrial adoption due to their compact size, lightweight design, easy installation, and precise control capabilities. This article highlights their unique application in the mechanical rotation system of Dutch motorboat ceiling pipelines. Features of IoT Mini Electric Actuators: Compact Design: The GRAT IoT mini electric actuator occupies minimal space, making it ideal for installations in confined environments. High Efficiency & Energy Saving: Delivering high torque output with only 10W power consumption, achieving dual optimization of energy efficiency and cost. Precise Control: Equipped with PWM stepless speed regulation technology, ensuring smooth operation and a control accuracy of up to 0.5%. Diverse Types: Supports dual voltage inputs (AC220V and DC24V) to adapt to various industrial settings, reducing replacement costs and time. Offers multiple feedback methods (4-20mA/0-10V/1-5V), uses encoder-based control, and is compatible with Modbus communication protocols for seamless integration into automation systems. Application in Motorboat Ceiling Pipeline Mechanical Rotation System Dutch motorboats are renowned globally for their speed, agility, and premium quality. Innovative technology plays a crucial role in their design and manufacturing. The integration of GRAT IoT mini electric actuators into the mechanical rotation system of motorboat ceiling pipelines addresses the following customer requirements: Mechanical Rotation Angle: The pipeline requires a 100° rotation to support antenna, radar, and other equipment installation and adjustment. Application Scenario: The pipeline supports devices like antennas and radars while housing cables. Regular angle adjustments ensure optimal signal reception and communication during motorboat operation. Frequency of Use: Rotation operations are performed 2–4 times weekly. Voltage Requirement: Actuators must support DC24V input. Application Outcomes: Performance Enhancement: Precise angle control ensures optimal signal reception and communication for antennas and radars. Reliability Boost: High reliability and low failure rates guarantee stable performance in harsh marine environments. Maintenance Efficiency: Compact size and lightweight design simplify installation and maintenance, reducing overall motorboat upkeep costs. Conclusion The GRAT IoT mini electric actuator, with its compact design, high efficiency, and precision control, has played a pivotal role in the foldable equipment arm rotation system of Dutch motorboats. This innovative application not only enhances motorboat performance and reliability but also paves the way for technological advancements in the water sports industry. > GRAT IoT Mini Electric Actuator