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.