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

In industries where every second counts—from emergency shutdowns to high-frequency batch processing—the GRAT Quick-Opening Electric Actuators deliver unmatched speed and reliability. Engineered for valves from DN15 to DN150, these actuators achieve 0-90° full travel in just 3-4 seconds, setting a new benchmark for rapid response in fluid control. Why Speed Matters: Emergency Readiness: Instant isolation of hazardous media (e.g., flammable gases, corrosive chemicals) mitigates risks. Throughput Optimization: Reduce cycle times in batch processes by up to 20% compared to standard actuators. Energy Efficiency: Minimize parasitic losses during frequent operations with optimized torque profiles. But raw speed alone isn't enough.To truly excel in industrial environments, rapid response must be paired with precision engineering. The GRAT Quick-Opening Electric Actuator achieves this through a symphony of mechanical innovation and intelligent control - where every millisecond of performance is backed by decades of valve automation expertise. Designed for Critical Speed and ReliabilityIn mission-critical applications where response time impacts safety and productivity, GRAT Quick-Opening Electric Actuator deliver 0-90° full rotation in 3-4 seconds (DN15-DN150). This rapid operation is achieved through: High-torque brushless motors with optimized gear ratios Zero-backlash gearing for instantaneous force transfer Smart acceleration profiles that prevent water hammer Built to Outlast Your EquipmentWith 100,000+ cycle durability verified in ISO 9001 testing, our actuators feature: DDS (Dynamic Duty System) calibration - One-touch setup adapts to any valve's breakaway torque Industrial-grade connectors and hermetically sealed electronics (IP68) Self-diagnostic firmware that alerts before maintenance is needed Engineered for Real-World InstallationsThe industry's most flexible mounting system includes: 360° adjustable mounting flange - Fits any valve orientation Corrosion-resistant alloys (316SS or nickel-plated options) -40°C to 80°C operating range with optional heating jackets Applications• Emergency shutdown systems (ESD)• Batch processing lines• Steam isolation valves From rapid 3-second actuation to mission-critical customization, GRAT Quick-Opening Electric Actuators are engineered to your exact needs. Whether you require ATEX-certified explosion-proofing, specialized voltage ranges, or fail-safe configurations, our team delivers tailored solutions that keep your operations fast, safe, and efficient. Contact GRAT automation specialists for your project's specific requirements. > GRAT Quick-Opening Electric Actuators

As a key solution for renewable energy storage, molten salt systems face extreme operational challenges 300°C- from 565°C temperatures to corrosive salt flows. Electric high-temperature ball valves serve as critical control components, ensuring both safety and efficiency in these demanding conditions. Grat now Shared some Solutions for a Greener Future. 1.Core Challenges and Valve Requirements in Molten Salt Thermal Energy Storage SystemsMolten salt thermal energy storage systems store and release thermal energy through circulating molten salt (typically nitrate mixtures). This process imposes unique valve requirements: ①Extreme Temperatures: Operating temperatures range from 300°C to 565°C, requiring valves to maintain reliable long-term sealing under continuous thermal stress. ②Medium Characteristics: Molten salt poses risks of solidification-induced clogging and high-temperature corrosion, demanding valves with erosion-resistant materials and anti-clogging designs. ③Precision Control: Rapid flow adjustment is essential for system responsiveness, necessitating valves equipped with high-accuracy electric actuators and tight shut-off capabilities. 2.Three Core Advantages of Electric High-Temperature Ball Valves To address the challenges of molten salt systems, electric high-temperature ball valves offer the following key advantages: ①High-Temperature Resistance & Anti-Binding Design High-Temperature Optimized Construction: The valve body is constructed from high-temperature stainless steel or specialty alloys, paired with graphite/metal hard-sealing for superior thermal stability. Anti-Binding Mechanism: Preload compensation technology between the ball and seat prevents jamming due to molten salt crystallization or thermal expansion/contraction. ② Intelligent Electric Actuation for Precise Control High-Precision Regulation: The electric actuator supports 4–20 mA signal feedback and integrates with DCS for real-time (second-level) flow and pressure adjustments. ③ Low Maintenance & Extended Service Life Self-Cleaning Flow Path: A full-bore design minimizes molten salt buildup, reducing clogging risks. Modular Maintenance: Quick-replacement stem and seal assemblies cut maintenance costs by over 40%. 3.The Critical Role of Electric High-Temperature Ball Valves in Molten Salt Systems ① Energy Storage Phase Precise Flow Control: Regulates molten salt inflow into storage tanks to prevent overpressure risks. ②Energy Release Phase Dynamic Flow Adjustment: Modulates molten salt transfer rates to heat exchangers, ensuring stable steam parameters for power generation. ③Safety Protection Emergency Shutoff: Instantly isolates pipelines during failures to prevent molten salt leaks and associated hazards. 4.Optimizing Valve Selection for Efficient Molten Salt Thermal Storage With 19 years of expertise in high-temperature valve solutions, Grat Control Valves empowers customers to achieve safe, stable, and long-term operation of thermal storage systems through: Custom-engineered designs tailored to extreme conditions Military-grade sealing technology for leak-free performance Smart control integration for precision and reliability Within Powering Zero-Carbon Energy with High-Efficiency Molten Salt Systems,Grat cutting-edge electric high-temperature ball valves are engineered to maximize molten salt system performance—delivering unmatched energy storage efficiency, operational reliability, and sustainable energy solutions. By integrating our high-performance valve technology, we ensure seamless thermal energy transfer while driving the next generation of zero-carbon power. Innovation for a Sustainable Future – Where advanced engineering meets molten salt energy optimization. > Wuhan Grat Control Valve CO.,LTD

Key Features: In industrial automation, actuator performance is critical to system stability and efficiency. GRAT's 20Nm IoT Micro Electric Actuator (WA-20PCU) combines compact design, high torque, and smart connectivity, optimized for quarter-turn valves (butterfly, ball valves, dampers). Ideal for industries like chemical, power, and wastewater treatment, it excels in applications such as burner gas flow control and mineral processing. 1.Four Key Advantages for Grat 20Nm IoT Micro Electric Actuator ①Compact & Space-Saving DesignWith 1/3 smaller volume than conventional actuators of the same torque, its lightweight body and compact design save 30% installation space. Ideal for confined spaces like narrow pipelines or integrated equipment.   ②High Torque & Energy Efficiency• 20Nm Rated Torque: Effortlessly operates ball valves up to DN25, even with high-viscosity media.• Low Power Consumption: 10W design reduces energy use by 50%. Features a brushless motor with overload protection for extended lifespan and reliability.   ③Smart & Precise Control• 30-100% PWM Speed Regulation: Smooth operation with 0.5% position accuracy, ideal for burner adjustments.• Modbus Integration: Supports Modbus RTU/TCP for seamless PLC connectivity. Real-time status monitoring via OLED display with fault alerts.   ④User-Friendly & Fail-SafeManual/auto dual mode with hex wrench for quick emergency override during power failure, minimizing downtime.   2.Typical Application Scenario 1:Burner Gas Flow ControlIn gas systems, the EA-20 adjusts valve openings via Modbus the accuracy reached 0.5%.PWM speed regulation ensures smooth flow control, stabilizing flame while reducing energy costs. Scenario 2: Automated Valve Control for Desliming Bucket in Mineral ProcessingIn mining production lines, the EA-20's compact design fits confined spaces atop desliming buckets. It provides real-time valve position feedback via 4-20mA signal, while its torque-limiting mechanism prevents jamming and offers overload protection. The manual override function ensures quick maintenance and minimizes downtime, guaranteeing continuous operation.   GRAT's 20Nm IoT Micro Electric Actuator: Redefining Efficiency in Industrial AutomationFeaturing four core advantages - compact size, high torque (20Nm), 0.5% control precision, and ultra-low 10W power consumption - this actuator delivers exceptional performance in demanding applications. • Precision Gas Flow Control: Achieves 0.5% control accuracy in burner systems with smooth PWM stepless speed regulation for stable operation.• Robust & Energy-Efficient: The 10W ultra-low power design with intelligent overload protection ensures longevity, even in harsh environments like mineral processing desliming hoppers.• Seamless Integration: Modular design supports multi-protocol communication (Modbus RTU/TCP) for both standalone and system-integrated automation solutions. > Wuhan Grat Control Valve CO.,LTD

Driven by the need for energy-efficient, eco-friendly heating, compact control valves deliver precise temperature management—making them essential smart technology for the industry. 1.Key Features of Compact Electric ActuatorsDesigned for space-constrained installations, compact electric actuators offer simplified wiring and intuitive operation. They accept multiple control signals (switch, analog, or digital) and support diverse applications. Featuring one-touch calibration, these actuators reduce commissioning time and lower ownership costs. 2.Applications of Compact Control Valves in Heating Systems1) Precision Temperature Control for Enhanced EfficiencyCompact control valves are deployed at critical points (supply/return lines, radiators) in heating systems. Driven by electric actuators, they automatically regulate heating medium flow based on real-time room temperature feedback, maintaining stable thermal conditions. This precision reduces energy waste traditional systems. 2) Smart Integration for User-Centric ManagementIntegrated with building automation systems, these valves enable remote monitoring and automated adjustments. Users access real-time system status and customize settings via mobile apps or smart home interfaces, optimizing comfort while reducing operational burdens. 3) Space-Efficient Adaptation to Complex LayoutsWith compact dimensions and modular designs, valves install effortlessly in confined spaces and retrofit seamlessly into existing piping networks. Customizable anti-corrosion & high-temperature resistant construction ensures corrosion resistance in diverse environments. 4) Sustainability Through Optimized Resource UsePrecise flow modulation minimizes excess energy consumption, cutting CO₂ emissions. Reduced water consumption and extended service life further support eco-friendly operations. Grat Compact control valves are becoming indispensable in modern heating systems due to their precision regulation, smart functionality, and adaptability. As heating technology advances toward greater digitization and IoT integration, these valves will deliver increasingly reliable, energy-efficient thermal management – ensuring sustainable comfort while reducing operational costs. > Wuhan Grat Control Valve CO.,LTD

During the intelligent upgrade of vessel power systems, precise temperature control is critical for operational safety. Deployed on the LNG Guardian –Grat electric actuators ensure thermal management reliability through high-precision modulation. This project demonstrates the successful integration of electric actuators in premium marine engineering.   Critical Actuator Demands in Offshore LNG ApplicationsAs the "heart" of vessel operations, the shipboard power station requires precise temperature control valve regulation for LNG power system safety and efficiency. This offshore environment presents unique actuator challenges: Severe Salt Spray Corrosion: Highly corrosive marine atmospheres degrade both metallic and electronic components. Persistent Vibration & Shock: Continuous mechanical stresses inherent to vessel operations. Extreme Thermal Cycling: Must withstand temperature extremes from sub-zero seafaring to high-heat machinery spaces. Zero-Failure Reliability: Power system valve faults risk catastrophic consequences, demanding maintenance-free operation with mission-critical stability.   Marine-Specific Actuator EngineeringWuhan Grat's electric actuators address offshore demands through purpose-built design: 1.Robust Environmental Protection IP68 Sealed Enclosure: Pressure-rated sealing against seawater immersion, salt spray corrosion, and particulate ingress. Marine-Grade Corrosion Resistance: Enhanced with advanced electrophoretic coating, the housing and critical components resist salt and alkali corrosion, ensuring marine-grade durability. Extended Temperature Operation: -40°C to +100°C functional range for global maritime conditions. Vibration & Shock Resilience: Structural reinforcement validated against vessel operational stresses.   2. Precision Control & Operational IntegrityChallenge: Critical marine valve applications demand extreme precision and reliability under harsh conditions, where even minor deviations can disrupt flow distribution and temperature control in three-way valves. Grat’s Solution: ±1% Throttling Accuracy: Ensures precise modulation for strict process requirements. Marine-Grade Reliability: Industrial/ship-certified components guarantee 100,000+ trouble-free cycles. Integrated Protection Suite: Overload, thermal, and stroke limit safeguards prevent failure while maintaining system integrity.   3. Shipboard Power & Control IntegrationChallenge: Vessel systems require rugged, interference-proof connectivity and compatibility with diverse power and control protocols in corrosive, high-vibration environments. Grat’s Solution: 220VAC Direct Input: Eliminates power conversion needs, matching standard shipboard infrastructure. Multi-Protocol Signal Support: Native 4-20mA, 0-10V, and discrete interfaces for seamless PLC/DCS/PID integration. Marine-Proof Connectivity: Water-sealed, shock-resistant connectors ensure uninterrupted electrical performance.   Reliable Power for Open-Ocean Operations Grat Electric Actuators deliver critical thermal management in the LNG power system of Shipbuilding Heavy Industry Co., Ltd.'s 4,000-horsepower LNG guardian vessel. Proven performance through: Marine-Optimized Robustness: IP68 sealing, corrosion-resistant construction, -40°C to +100°C tolerance, and vibration-hardened design. Mission-Critical Control: ≤1% stroke accuracy with 100,000-cycle reliability. Native Shipboard Integration: 220VAC direct power and standard signal interfaces. This deployment ensures failsafe actuation of power station thermal regulation valves. > Wuhan Grat Control Valve CO.,LTD

In industrial fluid control, precise flow distribution and reliable shut-off performance are critical to system stability. Designed specifically for lithium bromide unit condensate systems, the electric three-way shut-off valve delivers efficient dynamic fluid control through bidirectional flow management, fast-acting operation, and advanced control integration.     In lithium bromide refrigeration systems, condensate flow distribution critically impacts heat transfer efficiency and operational stability. The electric three-way valve serves as the central flow-regulation component via: ✅ Adaptive flow distribution: Automatically redirects flow in real-time based on unit load changes to balance branch condensate flows, preventing localized overloading.✅ Emergency safety shut-off: Instantly isolates flow when abnormal pressure or equipment failure is detected, preventing backflow-induced pressure surges.✅ Zero-leakage reliability: PTFE stem packing and elastomeric seat seals maintain integrity during continuous flow-redirection cycles, minimizing maintenance downtime.   Rapid Response & Low Noise · Stroke time < 15 sec: Intelligent actuator enables emergency shut-off to prevent equipment damage · Sound pressure level ≤ 85 dBA at 1 m: Optimized flow path geometry minimizes turbulence for noise-sensitive applications Smart Integration & Robust Construction · 4–20mA + HART protocol: Direct DCS/PLC integration enables remote monitoring and automated control · Durable 316 stainless steel trim with PTFE seat seals: Maintains integrity during flow redirection · Carbon steel body: Provides structural strength for standard operating condition Epilogue Centered on its flow-diversion capability, the electric three-way shut-off valve integrates rapid response and intelligent control to deliver precision fluid-distribution solutions for lithium bromide unit condensate systems. We remain committed to advancing industrial valve technologies that enhance process reliability through engineering excellence. > Wuhan Grat Control Valve CO.,LTD

1.What is a pneumatic valve?A pneumatic valve is a device that uses compressed air to actuate (open, close, or proportionally control flow through) a valve. Key components include the valve body, valve stem, trim (e.g., ball, disc, plug), seals, and a pneumatic actuator. Compressed air acts on a piston or diaphragm within the actuator, generating linear or rotary motion to position the closure element. Due to their advantages of rapid actuation, ease of automation, and reliable performance, pneumatic valves are widely used in critical industries such as chemical processing, oil & gas, power generation, and natural gas, where they play a vital role in complex process control. 2. Working Principle AnalysisPneumatic valve operation begins at the air preparation unit (typically filters, regulators, and compressors), which intakes ambient air, removes impurities/moisture, and pressurizes it into compressed air. This air is distributed via piping to pneumatic actuators (diaphragm types for linear motion, piston types for high-force/stroke applications).For example: When air enters a diaphragm actuator's chamber, the diaphragm elastically deforms under pressure, displacing the valve stem. The stem mechanically transfers this motion to position the trim (e.g., plug, ball, or disc), thereby opening, closing, or modulating flow through the valve body. Normally Open (NO) Pneumatic Valves: Default state: Spring force holds the closure element (e.g., plug) open, ensuring uninterrupted fluid flow. Upon actuation: When a control signal (e.g., solenoid valve energizing) applies air pressure to the actuator, the piston/diaphragm overcomes spring force, driving the stem to move the closure element to the closed position and shut off flow. Normally Closed (NC) Pneumatic Valves: Default state: Spring force maintains the closure element in the closed position, blocking flow. Upon actuation: Air pressure applied to the actuator compresses the spring, retracting the stem to open the closure element and permit flow. The operating principle of piston pneumatic actuators similarly relies on differential air pressure across the piston. When pressurized air is applied to one side of the piston chamber, it generates linear force to drive the piston rod. This motion is mechanically transmitted through the valve stem to position the closure element (e.g., plug, ball, or disc). Piston actuators deliver higher thrust outputs than diaphragm types, making them ideal for large-bore valves and high-pressure applications where greater actuation force is required. 3.the implementation of the adjustment function Certain pneumatic valves incorporate flow regulation capabilities beyond basic on/off control. This is achieved through specialized closure element designs like V-port balls or eccentric rotary plugs. V-port Ball Operation:Rotation of the ball alters the V-shaped orifice area between the ball and seat. As the ball rotates from 0° to 90°: Opening phase: Flow area rotation angle → Flow rate increases Closing phase: Flow area (90° - rotation angle) → Flow rate decreases Control Mechanism:Precise regulation requires: Positioning system: A valve positioner converts control signals (4-20mA/pneumatic) into precise air pressure modulation. Actuator response: Modulated air pressure drives the actuator to achieve target rotation angle. Flow characterization: The V-port's engineered profile provides linear/equal-percentage flow characteristics. A thorough comprehension of pneumatic valves operational principles and performance characteristics – including rapid actuation, precise flow control, and fail-safe functionality – enables engineers to: Optimize process parameters (e.g., response time, pressure setpoints). Enhance production efficiency through reduced cycle times. Lower operational costs via minimized energy consumption and maintenance downtime. Ensure production chain stability with reliable shutoff and leakage control meeting product standards. > Wuhan Grat Control Valve CO.,LTD

Electric actuator slowing down? Daily near+100 cycles & two root causes + fixes.In industrial automation systems requiring 100+ daily cycles, electric actuator slowdown can cripple productivity. A real-world example: An actuator’s cycle time degraded from 15-30s to 45+s within 8 months, costing 20+ minutes of downtime daily. While the OEM denied warranty coverage, our engineering team diagnosed and fixed the issue—here’s how. In a reverse osmosis (RO) water treatment system, a DN150 butterfly valve with a 100 Nm electric actuator showed significant performance degradation under high-frequency cycling (80-90 actuations/day)—despite otherwise mild operating conditions. Medium: Purified water (non-abrasive) Pressure: Constant 1.18MPa Valve configuration: DN150 butterfly valve with 100 Nm torque motorized head. Technical team diagnosis: two core reasons. By analyzing the valve body structure, operating condition data and equipment configuration, we found the following problems:     1.Severe Seat Wear Causing Increased Actuator Torque Demand The cycle life of national standard (GB) butterfly valves is typically 20,000 to 30,000 cycles, while European standard (e.g., EN) valves achieve 40,000 to 60,000 cycles. The customer operates this valve 80 times per day, totaling nearly 20,000 cycles within 8 months. This usage approaches the end of the valve seat's expected service life.   Consequences of friction: Increased friction between the seat and disc results in a sustained rise in actuator torque requirement and longer stroke times.   2.The actuator was significantly under-torqued for the application — a classic case of a small horse pulling a heavy cart The DN150 butterfly valve is usually equipped with a motorized head with 200 Nm torque, but the customer only configured it with 100 Nm.   Direct impact: Long-term overload of low-torque actuators accelerates component aging and further slows down switching speeds.  Optimal Solutions for Valve Maintenance & Performance Enhancement Option 1: Replace the Worn Valve Seat If the valve seat is found to be severely worn, directly replace the valve seat with a high wear-resistant material to restore the performance of the valve body and prolong the service life.  Option 2: Upgrade to a Higher-Torque Electric ActuatorIf the valve seat is intact, upgrade to a 200 Nm electric actuator to ensure proper torque matching and prevent overloading. Essential Maintenance Guidelines for High-Frequency Valve Operation 1.Inspect valve seat wear regularly. For valves with over 50 daily cycles, quarterly inspections are recommended. 2.Ensure proper actuator torque matching to prevent premature wear caused by undersized torque of actuators. 3.Select durable valve bodies, such as EN-standard butterfly valves, to significantly extend maintenance intervals. Grat's Service CommitmentAs a professional control valve service provider, we are committed to delivering solutions until the problem is fully resolved. Regardless of warranty status, we offer complimentary technical diagnostics and tailored solutions to ensure efficient and stable production operations. > Wuhan Grat Control Valve CO.,LTD

1.Working PrincipleThe explosion-proof electric plug valve consists of a plug, valve body, sealing components, and an electric actuator. Upon receiving a control signal, the actuator rotates the plug to precisely regulate flow—enabling open, close, and controlling functions. Its explosion-proof capability is achieved through robust design and manufacturing processes, effectively isolating ignition sources (e.g., sparks or high temperatures) in flammable oil and gas environments. 2. Key Features of Explosion-Proof Electric Plug Valves   Quick-Acting OperationRequiring only a 90° rotation to achieve full open/close positions, these valves enable rapid response - a critical advantage in time-sensitive oilfield operations where process efficiency is paramount. Low Flow ResistanceThe straight-through flow path design minimizes flow turbulence, resulting in:• Reduced pressure drop across the valve• Lower system energy consumption• Improved overall pipeline efficiency Superior Sealing PerformanceFeaturing advanced sealing materials and optimized geometry, our valves ensure:• Zero-leakage performance• Reliable operation across varying pressure/temperature conditions• Extended service life High-Pressure CapabilityEngineered to withstand extreme wellhead pressures ,the robust construction guarantees operational safety in demanding downhole environments. 3. Critical Applications in Oil & Gas Operations Crude Oil Transmission & Wellhead Control• Provides immediate shut-off and precise flow regulation in high-pressure flow lines• Prevents hydrocarbon leaks and wellhead blowouts through fail-safe design• Self-cleaning seal mechanism minimizes particulate fouling in sandy/high-viscosity crude applications Gas Processing & Gathering Systems• Ensures reliable flow diversion during gas separation/compression cycles• Maintains pipeline pressure stability preventing leakage • Explosion-proof construction for methane-rich environments Waterflood & Fracturing Operations• Regulates high-pressure injection fluids • Enhances EOR efficiency through accurate flow control • PTFE-lined stainless steel construction resists HCl/HF acids in stimulation fluids Emergency Shutdown (ESD) SystemsLinked with the automatic control system, the pipeline can be quickly cut off in case of distress to prevent the spread of the accident. 4.Industry Outlook & Technological Evolution As offshore and remote oilfield developments progress, operational demands for equipment safety and reliability are reaching unprecedented levels. Explosion-proof electric plug valves are evolving through three key technological vectors: smart Integration, enhanced performance, sustainable solutions   For detailed technical specifications or application engineering support, our technical specialists are available for consultation. Contact us to discuss your project's specific requirements. > Wuhan Grat Control Valve CO.,LTD

In October 2020, GRAT supplied its hard-sealed electric control butterfly valve for a flue gas desulfurization (FGD) system at a Steel Group in Jinan, China.The process involves gas-liquid reactions, requiring corrosion-resistant and precise control valves to ensure stable operation. Flue gas desulfurization is key to controlling SO₂ emissions in industries like steel, with wet FGD being the most common method. The valve is used for coke oven gas concentration regulation, handling SO₂, SO₃, CO₂, and other process gases in a demanding industrial environment, and achieves over 90% desulfurization efficiency. Here are the key specifications of the GRAT valve used in this application: Medium: Process gas containing SO₂, SO₃, O₂, N₂, CO₂, H₃O Pressure: PN16 Size: DN350-DN800 Material: SUS304 stainless steel (disc & seat), WCB (body) Connection: Wafer-style Actuation: 4-20mA proportional control, smart electric actuator with local/remote switching & LCD display Power Supply: AC380V With its smart electric actuator, the GRAT valve enables precise and automated gas flow regulation, ensuring stable SO₂ removal while simplifying system operation and monitoring. As industries continue to seek efficient and reliable solutions for emission control, GRAT remains committed to providing durable, high-performance valves that support long-term operational stability in demanding environments. - GRAT Electric Control Butterfly Valve -

Automotive parts production often requires high-temperature and high-pressure steam generated from industrial boilers. These boilers rely on boiler gas, a flammable medium that demands strict control to ensure operational safety and efficiency. Any leakage or malfunction in the gas supply system could lead to production disruptions or severe safety hazards.In 2023, GRAT supplied a DN400 pneumatic on-off ball valve with a hydraulic manual override for a boiler gas supply system in a major automotive parts production facility. Below are the key technical specifications that make it fit for this challenging application. Application Site: Boiler gas supply system Industry: Automotive parts manufacturing Function: Medium switching and shut-off Product Name: DN400 Pneumatic On-Off Ball Valve with Hydraulic Manual Override Material: WCB (Carbon Steel) Connection Type: Flanged Connection Nominal Pressure: 1.6MPa Medium: Boiler Gas Power Source: Compressed Air Design Life: 5-10 years Designed for seamless medium switching and shutdown, this valve ensures stable and safe operation under demanding industrial conditions. GRAT’s pneumatic on-off ball valve has proven to be a reliable and high-performance solution for the automotive manufacturing sector’s fuel supply needs. By integrating advanced pneumatic control with durable construction, GRAT continues to support industrial applications with safe, efficient, and long-lasting valve solutions. > GRAT  Pneumatic On-Off Ball Valve 

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