PFA material properties: 

Tetrafluoroethylene-perfluoroalkoxy vinyl ether copolymer (perfluoroalkyl, soluble polytetrafluoroethylene). 
English name: Polyfluoroalkoxy. 
1, long-term use temperature-80-260 degrees, excellent chemical corrosion resistance, corrosion resistance to all chemicals, the lowest friction coefficient in plastics, but also good electrical properties, its electrical insulation is not affected by temperature, known as the king of plastics. 
2. Its chemical resistance is similar to that of polytetrafluoroethylene and better than that of vinylidene fluoride. 
3. Its creep resistance and compressive strength are better than PTFE, the tensile strength is high, and the elongation can reach 100-300%. 
Good dielectric properties and excellent radiation resistance. 
The flame retardancy is very good. 
4. Non-toxic: it has physiological inertia and can be implanted into the human body. 
5. Suitable for making corrosion-resistant parts, wear-reducing and wear-resistant parts, seals, insulators and medical equipment parts. 
6. High temperature wire and cable insulation, anticorrosion equipment, sealing materials, pump valve bushings, and chemical containers. 

Brand rules and regulations: 
Brand: SEBA. 
Origin: China. 
Material: PFA,PTFE,PDVF. 
Valve type: diaphragm valve. 
Start-up mode: manual, pneumatic, lucky and other normally open and normally closed three-way valve. 
Specification: 1, 4-3, 8-1, 2-3, 4-1 inch, 1. 1, 1. 1, 1. 1, 4, 1. 1, 1. 1, 2, 1, 1 ". 
Installation mode: enlarged mouth, bead. 
Application industry: semiconductor, solar energy, liquid crystal panel manufacturing, or other industries with ultra-high purity fluid requirements. 
Application fluids: hydrochloric acid, nitric acid, hydrogen peroxide and other chemical fluids with ultra-high purity and anti-corrosion requirements. 
The body part of the valve is made of high purity PFAs, and the parts in contact with the media are all made of PFA. 
Parts that are not in contact with the media: PFA,PVDF,PTFE,18-8 SS, etc. 
Pressure range: 913mbar-5.5bar. 
Temperature range: 200 ℃. 
High temperature and corrosion resistance. 
Suitable for the manufacture of solar wafers and plates, printed circuit boards and microchip production, chemical quantitative supply, LED production.