Fluorine lined butterfly valve is a valve designed specifically for highly corrosive media. Its core feature is to achieve corrosion resistance by lining the valve body with fluoroplastics (such as PTFE, FEP, etc.).
Here are its key information and technical details:
1. Structure and working principle
Basic structure: The butterfly plate is installed in the diameter direction of the pipeline, and the flow rate is controlled by rotating it from 0 ° to 90 °. The fully open state is 90 °.
Lining material: The valve body, butterfly plate, and valve seat are lined with polytetrafluoroethylene (PTFE) or PVDF, with a temperature resistance range of -200 ℃ to 200 ℃, and can withstand strong acids, strong alkalis, and organic solvents.
Sealing design: Three eccentric metal hard sealing structure, the valve seat adopts a combination of soft T-shaped sealing ring and multi-layer stainless steel sheets, achieving zero leakage through bidirectional sealing.
2. Main types and performance
Type characteristics Applicable scenarios
Pneumatic fluorine lined butterfly valve is equipped with AT type pneumatic actuator, supporting fast cutting/adjustment, pressure resistance PN1.6MPa, diameter DN50~DN1000
Automation control of chemical engineering, flue gas desulfurization, etc
Sanitary grade quick release clamp connection, compliant with DIN/ASME-BPE standards, made of 304/316L material, suitable for sterile environments
Powder transportation in the pharmaceutical and food industries
Adjustable with silicone rubber pad, precise flow regulation, tightly cutting off the proportion of corrosive liquids added (such as sulfuric acid, hydrochloric acid)
3. Application Fields
Chemical/Metallurgical: Transportation of highly corrosive media such as sulfuric acid and hydrofluoric acid.
Environmental engineering: desulfurization and denitrification system, acid-base wastewater treatment.
Food and medicine: hygiene control of sterile powders (such as milk powder and starch).