What are the structural characteristics of fluorine lined ball valves?

Fluorine-lined ball valve structural characteristics

The structure of the fluorine lined ball valve is a full bore floating ball type (two-stage) and a full bore fixed ball type (three-stage), mainly used to cut off or connect corrosive media in pipelines, and can be used for fluid regulation and control. Compared with other valve types, it has the following characteristics:
1. Low fluid resistance, smooth inner wall of lined ball valve, and unobstructed flow channel are the types of valves with relatively low fluid resistance.
2. The switch is quick and convenient, simply rotate the sphere 90 ° to complete the account opening and closing actions.
3. Using a special molding process, the lining material is lined on the inner wall of the valve housing, which can withstand corrosion from strong acid and alkali media. The combination of lining spherical surface and PTFE valve seat has good sealing performance and achieves zero leakage.
4. Multiple driving devices such as pneumatic, electric, and hydraulic can be configured to achieve remote control and automated operation.
5. The sphere is integrated with the valve stem, eliminating the difference in rotation angle and eliminating the danger of the valve stem bursting out of the body due to pressure changes, ensuring the safety and reliability of use.

Fluorine lined ball valve uses a ball with a circular through-hole as the opening and closing element, and the ball rotates around the centerline of the valve body with the valve stem to achieve valve opening and closing. Adopting a special molding process to make the sealing surface dense and good, combined with V-shaped PTFE packing combination to achieve zero leakage of the valve; The sphere and valve stem are cast as one, eliminating the possibility of the valve stem bursting out of the pressure bearing part due to pressure changes, fundamentally ensuring safety during use; Adopting the all plastic lining process, it is resistant to strong corrosion from the medium.
drive
Fluorine lined ball valves can be driven manually or by worm gear rotation Pneumatic fluorine lined ball valve Electric fluorine lined ball valves, etc.
feature
1. Ball valves with fluoroplastic lining layer have extremely high chemical stability and are suitable for any highly corrosive chemical medium;
2. Adopting a fully floating ball valve structure, it can perform element leakage closure throughout the entire pressure range, facilitating the pipeline system in ball cleaning and pipeline maintenance.
purpose
Fluorine lined ball valves are professionally designed to control the opening and closing of various highly corrosive media, and are widely used in industries such as petroleum, chemical, dyeing, pesticide, acid and alkali production. They are currently the ideal choice for anti-corrosion valves
Main lining materials for fluorine lined ball valves:
Perfluoroethylene FEP (F46)
Applicable medium:
Any organic solvent or reagent, dilute or concentrated inorganic acid, base, ketone, aromatic hydrocarbon, chlorinated hydrocarbon, etc.
Operating temperature:
-85~150
Characteristics: The mechanics, electrical properties, and chemical stability are basically the same as F4, but the outstanding advantage is dynamic impact toughness
High, with excellent weather resistance and radiation resistance.
Polytrifluoroethylene PCTEF (F3)
Applicable medium:
Various organic solvents, inorganic corrosive liquids (oxidizing acids)
Operating temperature: -195~120
Features: Heat resistance, electrical and chemical stability second only to F4, mechanical strength, creep performance, and hardness better than F4
Polypropylene: RPP
Applicable media: aqueous solutions of inorganic salts, dilute or concentrated solutions of inorganic acids and bases.
Operating temperature: -14~80
Characteristics: One of the lighter plastics, its yield, tensile and compressive strength, hardness are superior to low-pressure polyethylene, it has outstanding rigidity, good heat resistance, easy molding, and excellent cost. Modified mobility, fluidity, and bending elasticity.
Polyvinyl chloride: hard PVC
Applicable media: water-resistant, concentrated alkali, non oxidizing acids, chain hydrocarbons, oil, ozone, etc.
Operating temperature: 0-55
Features: high mechanical strength, excellent chemical stability and dielectric properties, good oil resistance and anti-aging resistance, easy to fuse
And bonding, with a lower price.
Polytetrafluoroethylene PTFE (F4)
Media used: strong acid, strong alkali, strong oxidant, etc.
Operating temperature: -200~180
Characteristics: It has chemical stability, high heat and 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 of use: resistant to most chemicals and solvents,
Operating temperature: -70~100
Features: The tensile and compressive strength of the product is better than that of F4, and it is resistant to bending, weather, and radiation. It is resistant to light and aging, and its major characteristics are good toughness and easy molding.
Polyolefin: PO
Applicable media: various concentrations of acid-base salts and certain organic solvents.
Operating temperature: -58~80
Characteristics: It is currently one of the most ideal anti-corrosion materials in the world and has been widely used for lining large equipment and pipeline components in rotary molding
Basic model:
Q41FA-10/16、Q41F46-10/16、Q41F40-10/16、Q41F2-10/16、Q41PO-10/16、Q41J(X)-10/16、Q41FA-150Lb、Q41F46-150Lb、Q41F40-150Lb、Q41F2-150Lb、Q41PO-150Lb、Q41J(X)-150Lb
Q641F46、Q941F46、Q41FS、Q41F-6S。
Design and manufacturing specifications: GB/T12237 API608 API 6D GB/T12221 ANSI B16.10 GB/T13927 API 598 GB/T13927 API 598