Main Materials Of Fluorine-lined Valves
Lined Valve Applicable media:
Any organic solvent or reagent, dilute or concentrated inorganic acid, alkali, ketone, aromatic hydrocarbon, chlorinated hydrocarbon, etc.
Using temperature:
-85~150
Features: Mechanical, electrical properties and chemical stability are basically the same as F4, but the outstanding advantage is high dynamic toughness, excellent weather resistance and radiation.
Polytrifluoroethylene PCTEF (F3)
Applicable media:
Various organic solvents, inorganic corrosive liquid (oxidizing acid)
Using temperature: -195~120
Features: Heat resistance, electrical properties and chemical stability are second only to F4, mechanical strength, creep performance, hardness is better than F4
Polypropylene: RPP
Applicable media: Aqueous solutions of inorganic salts, dilute or concentrated solutions of inorganic acids and alkalis.
Using temperature: -14~80
Features: One of the lightest plastics, its yield, tensile and compressive strength, hardness are better than low-pressure polyethylene, with outstanding rigidity, good heat resistance, easy molding, and low cost. After modification, the impact resistance, fluidity, and bending elasticity are improved.
Polyvinyl chloride: hard (PVC)
Applicable media: water resistance, concentrated alkali, non-oxidizing acid, chain hydrocarbon, oil and ozone, etc.
Operating temperature: 0-55
Features: high mechanical strength, excellent chemical stability and dielectric properties, good oil resistance and aging resistance, easy to weld
and bond, low price.
Polytetrafluoroethylene PTFE (F4)
Use medium: strong acid, strong alkali, strong oxidant, etc.
Use temperature: -200~180
Features: It has excellent chemical stability, high heat resistance, cold resistance, low friction coefficient, and is an excellent self-lubricating material, but has low mechanical properties, poor fluidity, and large thermal expansion.
Polyvinylidene chloride PVDF (F2)
Use medium: resistant to most chemicals and solvents,
Use temperature: -70~100
Features: tensile strength and compression strength are better than F4, resistant to bending, weathering, and radiation. Light and aging resistance, etc., the biggest feature is good toughness and easy molding.
Polyolefin: PO
Applicable media: various concentrations of acids, alkalis, salts and certain organic solvents.
Using temperature: -58~80
Features: It is the world's most ideal anti-corrosion material and has been widely used in large-scale rotational molding equipment and pipeline linings.
