Are PTFE valves lined with fluorine or sprayed?

In addition, polytetrafluoroethylene not only has chemical stability, but also has good anti fouling and anti adhesion properties, extremely small and similar dynamic and static friction coefficient values, and good anti friction and lubrication performance, check valve As a sealing pair for valve opening and closing components, it is necessary to reduce the friction between the sealing surfaces, decrease the operating torque of the valve, and improve the service life of the product. Its application range can also be extended to the food and pharmaceutical industries. A damper has been added to greatly extend the service life of the needle valve. Fluorine lined valves are specifically designed to control corrosive or highly corrosive media, PTFE lined valve The inner surface of the valve body is covered with various fluoroplastics for selection, suitable for different working temperatures and fluid pipelines, and has the characteristics of high strength and good corrosion resistance.

Polytetrafluoroethylene PTFE (F4) is used in media such as strong acids, strong bases, and strong oxidants. Fluorine lined DC globe valve Usage temperature: -200~180 Characteristics: It has chemical stability, high heat resistance, cold resistance, low friction coefficient, and is an excellent self-lubricating material. However, its mechanical properties are low, its flowability is poor, and its thermal expansion is large. Polyvinylidene chloride PVDF (F2) medium: resistant to most chemicals and solvents, operating temperature: -70~100. Features: better tensile and compressive strength than F4, bending resistance, weather resistance, and radiation resistance. It is resistant to light and aging, and its major characteristics are good toughness and easy molding.
Polytrifluoroethylene PCTEF (F3) Suitable media: various organic solvents, inorganic corrosive liquids (oxidizing acids), operating temperature: -195~120 Features: heat resistance, electrical performance, and chemical stability second only to F4, mechanical strength, clamp type Fluorine-lined Butterfly Valve Creep performance, better hardness than F4, polypropylene: RPP suitable medium: aqueous solutions of inorganic salts, dilute or concentrated solutions of inorganic acids and bases. Usage temperature: -14~80. Characteristics: One of the lighter plastics, its yield, tensile and compressive strength, hardness are superior to low-pressure polyethylene, with outstanding rigidity, good heat resistance, easy molding, and excellent cost. Modified mobility, fluidity, and bending elasticity.

This article is written by check valve Editor, please indicate the source when reprinting http://www.lierduofm.com/