Overview of the valve

by:Lianke Valve     2022-06-14
Fluorine lined butterfly valve electric wafer full lined with fluorine butterfly valve overview Lining butterfly valve is a polymer material with thick lining technology on the flow parts, valve body, butterfly plate and valve stem. Organic solvents and other media are ideal products for intercepting and regulating equipment on gas, liquid, and semi-fluid pipelines and containers in chemical, petroleum, pharmaceutical, food, iron and steel smelting, papermaking, hydropower and other systems, and can replace gate valves, Globe valves and other types of shut-off and regulating valves. Application: The fully lined PTFE (F4), PTFE (F3) and PFEP (F46) fluoroplastic lined valves produced by our factory have the advantages of corrosion resistance, no leakage and long service life. It is suitable for concentrated sulfuric acid, hydrochloric acid, nitric acid, hydrofluoric acid, aqua regia, various organic acids, strong acids, oxidizing media or high temperature alkene sulfuric acid, high temperature concentrated acetic acid, acid-base alternation, various organic solvents and other strong corrosive media. Similar products also have electric soft sealing butterfly valve. Fluorine lined butterfly valve electric wafer fully lined with fluorine butterfly valve Product Overview Electric fluorine lined butterfly valve (also known as corrosion-resistant electric butterfly valve) is composed of an electric actuator and a fluorine lined butterfly valve body. The butterfly valve is opened and closed by a butterfly plate that rotates with the valve stem It is used to realize the opening, closing and adjustment of the valve. The electric lined PTFE butterfly valve is a polymer material with thick lining technology on the overflow parts, valve body, disc, and valve stem. It has excellent corrosion resistance and corrosion resistance. Salt, oxidant, reducing agent, organic solvent and other media are ideal for intercepting and regulating equipment on gas, liquid and semi-fluid pipelines and containers in chemical, petroleum, pharmaceutical, food, iron and steel smelting, papermaking, hydropower and other systems. It can also replace gate valves, globe valves and other types of cut-off and regulating valves. The electric lined PTFE butterfly valve produced by our factory has the advantages of corrosion resistance, no leakage and long life. Electric lined tetrafluoro butterfly valve is suitable for concentrated sulfuric acid, hydrochloric acid, nitric acid, hydrofluoric acid and various organic acids, strong acids, oxidizing media or high temperature alkene sulfuric acid, high temperature concentrated acetic acid, acid-base alternation, various organic solvents and other strong corrosives medium. Butterfly valve valve operating mechanism The opening and closing direction of the electric wafer butterfly valve full-lined fluorine butterfly valve operation should be closed clockwise. Since the valves in the pipe network are often opened and closed manually, the opening and closing revolutions should not be too many, even large-diameter valves should be within 200-600 revolutions. In order to facilitate the opening and closing operation of one person, the maximum opening and closing torque should be 240N-m under the condition of pipeline work pressure. The opening and closing operation end of the valve should be a square tenon with standardized dimensions and face the ground, so that people can directly operate it from the ground. Valves with discs are not suitable for underground pipe networks. Fluorine-lined butterfly valve electric wafer full-lined fluorine-lined butterfly valve opening and closing degree display plate: ① The scale line of the valve opening and closing degree should be cast on the gearbox cover or on the casing of the display plate after the direction is changed, all facing the ground, the scale line Brush with fluorescent powder to make it eye-catching; ②The material of the indicator dial can be made of stainless steel if the management is good, otherwise it is a painted steel plate, and do not use aluminum skin; ③The indicator dial is eye-catching and firmly fixed. After the opening and closing adjustment is accurate, it should be locked with rivets. If the valve is buried deep, and the distance between the operating mechanism and the display panel is ≥1.5m from the ground, there should be an extension rod facility, and it should be fixed firmly so that people can observe and operate from the ground. That is to say, the valve opening and closing operation in the pipeline network is not suitable for downhole operation. Valve performance testing When a certain specification of fluorine-lined butterfly valve is manufactured in batches, an authoritative agency should be entrusted to conduct the following performance testing: ① the opening and closing torque of the valve under working pressure; ② under working pressure , which can ensure the continuous opening and closing times of the valve closing tightly; ③ detection of the flow resistance coefficient of the valve under the condition of pipeline water delivery. The valve should be tested as follows before leaving the factory: ① When the valve is open, the valve body should withstand the internal pressure test that is twice the working pressure value of the valve; ② When the valve is closed, both sides bear 1.1 times the working pressure value of the valve, respectively. There is no leakage; however, the leakage value of metal-sealed butterfly valves is not greater than the relevant requirements. The inside and outside of the valve is anti-corrosion lined with fluorine butterfly valve. The electric wafer is fully lined with fluorine butterfly valve body (including the variable speed transmission box) inside and outside. First of all, shot blasting, sand removal and rust removal, and strive to electrostatically spray powder non-toxic epoxy resin with a thickness of more than 0.3mm. . When it is difficult to electrostatically spray non-toxic epoxy resin for extra-large valves, similar non-toxic epoxy paint should also be brushed and sprayed. The inside of the valve body and various parts of the valve plate require comprehensive anti-corrosion. On the one hand, it will not corrode when immersed in water, and there will be no electrochemical corrosion between the two metals; on the other hand, the surface is smooth to reduce the water resistance. The hygienic requirements for the anti-corrosion epoxy resin or paint in the electric wafer fully lined with fluorine butterfly valve should have the test report of the corresponding authority. The chemical and physical properties should also meet the relevant requirements. Valve packaging and transportation Fluorine-lined butterfly valve electric wafer fully lined with fluorine-lined butterfly valve should be equipped with lightweight blocking plates on both sides to seal. Medium and small diameter valves should be bundled with straw ropes and transported in containers. Large-diameter valves are also packaged in a simple wooden frame to avoid damage during transportation.
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