Wuhan Grat Control Valve Co., Ltd.

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

In the industrial refrigeration sector, equipment stability and energy efficiency control remain top priorities for users. Faced with the challenges of precise water medium regulation and ultra-low temperature conditions, operators demand highly reliable and maintenance-free fluid control solutions. The GRAT electric water supply regulating valve, with its precision down to 1L/min and zero-leakage sealing, has become the preferred choice for numerous industrial refrigeration users, effectively enhancing system stability and significantly reducing operational costs. Operating Conditions Port Size: DN15 - DN50 Industry Application: Industrial Refrigeration Medium: Water Control Action: On/Off Shut-off or Proportional Control Body Material: CF8 (ASTM A351) Trim Material: CF8 (ASTM A351) Seat Seal: PTFE + HNBR O-ring Medium Temperature Range: -30°C to +60°C Nominal Pressure (PN): 1.0 - 6.4 MPa Performance Results Based on the aforementioned working conditions, the GRAT electric water supply regulating valves have become the preferred choice for numerous industrial refrigeration users due to their high-precision regulation and excellent sealing performance. After applying the GRAT electric water supply valve to a central air-conditioning chilled water unit, the customer provided the following operational data: High-Precision Regulation and Zero Leakage Enables micro-regulation as low as 1L/min, supported by a CF8 stainless steel valve body and PTFE+HNBR composite sealing. Zero medium leakage throughout service ensures safety and environmental compliance. Enhanced System Stability and Reliability Temperature control deviation reduced by 65%, while the average annual failure rate decreased from 3.2 to below 0.5. Original factory precision is maintained even after 5 years of continuous operation. Reduced Maintenance and Operational Costs Achieved an annual reduction in maintenance expenses of approximately ¥45,000, alongside an 82% decrease in unplanned downtime due to valve-related issues, significantly improving cost-effectiveness and production availability. Improved Energy Efficiency Cooling efficiency increased by 6.8%, contributing to lower energy consumption and enhanced operational sustainability. Other Application The GRAT electric water supply regulating valve automatically adjusts flow rates and primarily consists of an electric actuator and a valve body. It offers broad applicability, high precision, and rapid response, making it ideal for scenarios requiring fast adjustments. In HVAC applications, the valve is widely used in heating and cooling systems. It modulates cold or hot water flow by automatically adjusting the opening based on real-time room temperature feedback, ensuring a consistent and comfortable indoor climate. In boiler systems, the valve serves as a critical component in automatic feedwater regulation. Its precisely designed throttle element adapts to varying pressure differentials, maintaining stable drum water levels while preventing media backflow and leakage, thereby enhancing system safety and cleanliness. In summary, the GRAT electric water supply regulating valve has extensive applications in HVAC, refrigeration, boilers/industrial furnaces, primarily used for flow control, temperature regulation, and medium flow control, thus enhancing system stability and efficiency. We remain committed to continuous technological innovation and lean manufacturing to provide smarter and more reliable fluid control solutions for industrial customers worldwide, aiding in the long-term goal of achieving efficient energy savings and stable operation of systems. > GRAT Electric Water Supply Regulating Valve

In the fields of industrial production and water treatment, the precise operation of dosing devices is directly related to process stability and cost control. The IoT mini electric actuator equipped with plastic ball valves, launched by GRAT, has become an ideal control component for dosing devices due to its compact size, outstanding performance, and adaptability, providing efficient and reliable solutions for various dosing scenarios. Core Product: Technical Breakthrough of the IoT Mini Electric Actuator The GRAT IoT mini electric actuator is an innovative product specifically developed for small fluid control scenarios, and its technical advantages can be clearly presented in the following four aspects: Structural Design: Extreme Miniaturization, Suitable for Confined Spaces The actuator’s volume is only 1/3 of that of traditional actuators, weighing less than 500 grams, with a compact integrated structure design. This lightweight and small size characteristic allows it to easily fit into narrow spaces inside dosing devices, making it especially suitable for the layout of miniaturized and integrated dosing equipment. Performance: High Precision, Strong Protection, Stable Response to Complex Environments Control Precision: Equipped with high-performance brushless motors, the control precision can reach 0.5%, allowing for precise adjustment of the ball valve opening and closing angles, thus achieving fine control of the chemical flow, meeting the stringent dosage requirements during dosing processes. It can also maintain long-term stable operation in common humid, dusty, or slightly corrosive environments in dosing devices. Material Selection: Corrosion and Abrasion Resistant, Ensuring Fluid Purity The accompanying plastic ball valves are made from high-strength PP or PVDF materials, both of which possess excellent chemical corrosion resistance and can withstand long-term erosion from various commonly used chemicals such as acids, alkalis, and saline solutions. Additionally, the smooth interior wall design helps reduce chemical residue, ensuring the purity of fluid transport and preventing secondary pollution. Installation Compatibility: Plug and Play, Enhancing Assembly Efficiency The actuator and the ball valve adopt an integrated prefabricated design, with precise adjustments completed before leaving the factory, eliminating the need for additional on-site adaptation or complex calibration. During installation, it only requires a simple connection to the pipeline and control system to be put into use quickly, significantly shortening the assembly cycle of dosing devices and reducing labor costs. Precise Application Scenarios in Dosing Devices The core requirement of dosing devices is to accurately and proportionately feed chemicals in a “timed and measured” manner. The GRAT IoT mini electric ball valve plays a crucial role in various stages due to its characteristics: Chemical Metering Stage: Stable Flow Control Between the dosing pump and pipeline in the dosing device, the IoT mini electric ball valve can serve as a flow regulating valve, adjusting the opening in real-time based on feedback from sensors regarding water quality or process parameters. Multi-Chemical Switching: Quick Response with No Residue For scenarios where multiple chemicals, such as acidic and basic agents, are alternately dosed, the flow of the previous chemical is gradually decreased to zero before the flow of the next one is increased to the set value, thereby avoiding instantaneous mixing. Furthermore, the smooth inner surface of the ball valve ensures that the chemical residue is below 0.1%, further reducing the risk of cross-contamination. Pipeline Control: Remote Automated Operation In scenarios requiring scheduled dosing (such as regular disinfection of cooling water systems), the IoT mini electric ball valve can be controlled remotely to automatically open and close. This allows staff to operate without being on-site; they simply need to preset the dosing time and duration in the central control system, and the actuator will drive the ball valve to open or close on time, precisely executing the dosing plan. This feature is particularly suitable for unattended small dosing devices, reducing labor costs and minimizing human operation errors. Conclusion: Infusing “Precision and Efficiency” into Dosing Devices The GRAT IoT mini electric actuator, equipped with a plastic ball valve, perfectly meets the various control needs of dosing devices with its core advantages of “small size, high precision, strong corrosion resistance, and ease of integration.” From fine adjustment of chemical flow to safe switching between multiple chemicals, from remote automated operations to emergency responses in unexpected situations, it not only simplifies the dosing process but also enhances the stability and economic efficiency of the system. > GRAT IoT Mini Electric Actuator

Background In industrial combustion systems, the control of air volume through dampers is crucial for combustion efficiency, safety, and compliance with emission standards. A certain client needed to install a high-reliability control valve in a DN800 pipeline to regulate the air intake of the burner damper, ensuring a stable combustion process while meeting long-term operational requirements.GRAT electric control valve delivers precise flow adjustment, reliable signal feedback, and durable performance, making it ideal for this application. Operating Conditions Size: DN800Power: AC220VControl signal: On/off input,0-1kΩ feedbackPredict lifetime: 5 yearsRunning time: May,2012Function: Proportional Airflow Control Product Advantages & Features High Precision Control: Equipped with a highly sensitive electric actuator,with Backlash≤0.5%, Dead one≤0.5%, Feedback Error≤0.5%, the airflow adjustment error is kept within ±2%, preventing incomplete combustion or excessive air supply. Stable and Reliable Signal Feedback: The 0-1kΩ resistance feedback mechanism monitors the valve position in real-time, ensuring that the air-fuel ratio remains within the optimal range, thus maintaining the combustion system in its best operating condition at all times. Long Lifespan Design: The mechanical structure is optimized and made with wear-resistant, high-temperature materials to ensure stable performance during long-term operation, far exceeding the 5-year design lifespan. Wide Voltage Adaptability: Supports AC220V power supply, accommodating common voltage fluctuations in industrial environments to ensure stable operation. Easy Maintenance: Modular design allows for easy replacement of key components; only regular lubrication and inspections are needed, reducing maintenance costs by 50%. Performance Results The electric butterfly valve completes the airflow switch in 10 seconds, eliminating the risk of dioxin generation due to adjustment delays. After switching to the butterfly valve, fluid resistance decreases and the motor current of the fan drops by 11A, resulting in annual electricity savings of 220,000 kWh. The dust-free structure of the valve plate extends the maintenance interval to 6 months, reducing downtime by 120 hours annually. Since its operation commenced in May 2012, the valve has continued to function steadily, fully meeting the client’s stringent requirements for air volume control, far exceeding the expected five-year lifespan, and demonstrating exceptional durability. With its high reliability, precise control and long life, we have won the trust of customers by performing well in burner vent door air volume control. This case fully proves the excellent performance of GRAT products in the field of industrial automation control, providing efficient and stable valve solutions for global customers.