fluorine lining gate valve

Valve anti-corrosion lining material

by:Lianke Valve     2022-09-11
1. Polytetrafluoroethylene PTFE (F4) Applicable medium: strong acid, strong alkali, strong oxidant, etc.; operating temperature -200 ~ 180 ℃; Features: excellent chemical stability, high heat resistance, cold resistance; It has a very low coefficient of friction and is an excellent self-lubricating material, but has low mechanical properties, poor fluidity and large thermal expansion. 2. Polyperfluoroethylene propylene FEP (F46) Applicable medium: any organic solvent or reagent, dilute or concentrated inorganic acid, alkali, ketone, aromatic hydrocarbon, chlorinated hydrocarbon, etc.; Use temperature: -85~150℃; Features: mechanics, The electrical properties and chemical stability are basically the same as F4, but the outstanding advantages are high dynamic impact toughness, excellent weather resistance and radiation. 3. Polytrifluoroethylene PCTEF (F3) Applicable medium: various organic solvents, inorganic corrosive liquids (oxidizing acids); Use temperature: -195 ~ 120 ℃; Features: heat resistance, electrical properties and chemical stability are only Second to F4, mechanical strength, creep performance and hardness are better than F4. 4. Polyvinylidene fluoride PVDF (F2) Applicable medium: resistant to most chemicals and solvents; Use temperature: -70 ~ 100 ℃; Features: tensile strength and compressive strength are better than F4, bending resistance, weather resistance, radiation resistance , light resistance and aging, etc., the biggest feature is good toughness, easy to shape. 5. Polypropylene RPP Applicable medium: aqueous solution of inorganic salts, dilute or concentrated solution of inorganic acids and alkalis; Use temperature: -14 ~ 80 °C; Features: One of the lightest plastics, its yield, tensile and The compressive strength and hardness are better than those of low-pressure polyethylene, with outstanding rigidity; good heat resistance, easy to form, and low cost. After modification, the dynamic impact, fluidity and flexural modulus of elasticity are improved. 6. Polyolefin diameter PO Applicable medium: various concentrations of acid and alkali salts and some organic solvents; Operating temperature: -58 ~ 80 ℃; Equipment and plumbing fittings lining. 7. Polyvinyl chloride (rigid) PVC Applicable medium: water resistance, concentrated alkali, non-oxidizing acid, chain hydrocarbon, oil and ozone, etc.; Use temperature: 0 ~ 55 ℃; Features: high mechanical strength, chemical stability and Excellent dielectric properties, good oil resistance and aging resistance, easy welding and bonding, and low price. All kinds of lined pipeline valves have the same housing and connection dimensions with the same nominal diameter, but the lining materials can be used in the following different lining materials according to different media: modified polyolefin PO, polypropylene RPP, polyperfluoroethylene propylene F46 , Teflon F4, Teflon F3, Polyvinylidene F2.
types of industrial valves valve application processes have been widely used to produce types of industrial valves such as types of industrial valves, types of industrial valves, and types of industrial valves etc.
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