First, lined fluorine valve chemical properties:
Resistance to atmospheric aging: Irradiation resistance and low permeability: long-term exposure to the atmosphere, the surface and properties remain unchanged.
Non-flammable: oxygen limit index below 90.
Acid and alkali resistance: insoluble in acid, alkali and organic solvents.
Anti-oxidation: can withstand strong oxidizer corrosion.
Second, fluorine-fluorine valve working characteristics:
Performance: Medium working temperature: -100 ℃ ~ -150 ℃
Medium working pressure: Positive pressure: 2.5MPa, under normal temperature resistant to negative pressure 70KPa
Corrosion resistance: Steel PTFE tube, in addition to molten metal lithium, potassium, sodium, chlorine trifluoride, high temperature trifluoride oxygen, high-velocity liquid fluorine, it can almost resist all chemical media, Including concentrated nitric acid and aqua regia corrosion, it can long-term at 230 ℃ -250 ℃ temperature work. Steel polyvinylidene fluoride or other vinylidene fluoride composite pipe, halogen, halogenated hydrocarbons, strong oxidants, boiling acid, alkali, a variety of organic solvents have good corrosion resistance, but intolerant sulfuric acid, concentrated Hot sulfuric acid and nitric acid, ketones, esters, amines and high temperature sulfonating agents above 90 ℃.
The main advantages of fluorine valve:
High temperature - working temperature up to 250 ℃.
Low temperature resistance - Good mechanical toughness; 5% elongation even at temperatures down to -196 ° C.
Corrosion resistance - is inert to most chemicals and solvents, resistant to acids and bases, water and various organic solvents.
Weather resistant - the best aging life in plastics.
High lubricity - is the lowest friction coefficient in solid materials.
Non-stick - is the smallest surface tension in a solid material that does not adhere to anything.
Non-toxic - with physiological inertia, non-toxic to creatures
Fluorine valve main application:
Lined fluorine valve for highly corrosive gases and liquids at high temperatures, other types of steel-plastic composite pipe and metal pipe discomfort transport medium, steel PTFE complex. Co-pipe are applicable, steel poly-vinylidene fluoride pipe for the transport of working temperature -40 ℃ ~ +150 ℃ corrosive media.
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