Classification of fluorine-lined valves and introduction

The fluorine-lined valve products include fluorine-lined cut-off valves, fluorine-lined ball valves, fluorine-lined diaphragm valves, fluorine-lined check valves, and fluorine-lined gate valves. The manufacturing technology includes the formulation of the adhesive and its production process. The adhesive can make the lining glue have a strong affinity with the pipe wall, has good smash resistance and anti-fouling performance, and has a long service life. In order to make the valve have both metal strength and corrosion resistance.

Fluorine-lined valve classification:
Fluorine-lined valves are divided into: pipe clamp valve, lining diaphragm valve, lining pneumatic butterfly valve lining ball valve, lining check valve, lining fluorine shut-off valve, lining plug valve, lining wedge gate valve, diaphragm valve, butterfly valve, ball valve, swing type, Core check valve, pneumatic lining rubber, lining fluorine plastic diaphragm valve (normally closed), DC lining rubber diaphragm valve, packing type adjustable lining fluoroplastic butterfly valve, lining fluorine plastic cut-off valve.

Fluorine-lined valve use and use:

With the rapid development of modern industry, the lining fluorine valve and its various pipeline accessories have been rapidly applied in various fields such as petroleum, printing and dyeing, chemical industry, etc., showing strong vitality. As the first choice project in engineering, it has caused various projects. The design unit and the construction unit have great concern and favor, and it is a Chaoyang product with great market potential.

The fluorine-lined valve has the dual function of switch and flow regulation, which can easily open and close the gas path without affecting the flow, ensuring the repeatability of the flow. The opening is slow, reducing the impact of instantaneous pipe pressure on the meter. A damper is added considerably, which greatly increases the service life of the needle valve. Fluorine-lined valves are specially designed to control corrosive or highly corrosive media. The surface of the valve body is covered with various fluoroplastics. It is suitable for different working temperatures and fluid pipelines. It has high strength and good corrosion resistance.

Introduction of lining fluorine valve:

Fluorine-lined valve, also known as fluoroplastic lining corrosion-resistant valve, is a method of molding (or inlaying) PTFE resin (or profiled) on the inner wall of steel or iron valve bearing parts (the same method) Applicable to the inner surface of various pressure vessels and piping accessories) or the outer surface of valve internals, using its unique performance in resisting corrosive media to make all kinds of valves and pressure vessels.
Fluorine-lined valves are all lining processes for the medium in the valve body. The lining materials are generally made of fluoroplastics such as FEP (F46) and PCTFE (F3), which can be applied to various concentrations of sulfuric acid, hydrochloric acid and hydrofluoric acid. , Wangshui and various organic acids, strong acids, strong oxidants and other corrosive media, but the lining of fluorine valves is limited by temperature (only applicable to medium between -50 ° C ~ 150 ° C), The valves for lining fluorine plastic are: lining fluorine butterfly valve, lining fluorine ball valve, lining fluorine shut-off valve, lining fluorine diaphragm valve, lining fluorine gate valve, lining fluorine plug valve and so on.

Introduction to PTFE:

Among the anti-corrosion materials, PTFE has incomparable excellent performance, in addition to molten alkali metal, elemental fluorine and aromatic hydrocarbons, in various concentrations of hydrochloric acid, sulfuric acid, nitric acid, aqua regia, organic acids, strong oxidants, The combination of concentrated and dilute acid, alternating alkali and various organic solvents showed a gradual reaction. The PTFE was lined with the fluorine valve on the inner wall of the valve, which overcomes the shortcomings of the low strength of the PTFE material and solves the valve. The main material has poor corrosion resistance and high cost. In addition, in addition to its excellent chemical stability, PTFE has good anti-fouling and anti-adhesive properties, and the dynamic and static friction coefficient values ​​are extremely small and similar. The anti-friction and lubricating properties are good, and it is used as the sealing pair of valve opening and closing parts. In order to reduce the friction between the sealing surfaces, reduce the operating torque of the valve, and improve the service life of the product, the scope of use can be extended to the food and pharmaceutical industries.