What Are The Common Problems With Fluorine-lined Ball Valves?

Lined Ball Valve is a relatively common ball valve, which mainly plays the role of opening and closing in pipelines with corrosion-resistant media. However, when purchasing or using it, customers will encounter some more difficult problems. The following are several related issues of fluorine-lined ball valves.

1. What is a fluorine-lined ball valve? What kind of ball valve is a fluorine-lined ball valve?

Answer: The fluorine-lined ball valve has the same motion structure principle as an ordinary ball valve (a ball with a circular through hole is used as an opening and closing part, and the ball rotates around the center line of the valve body with the valve stem to realize the opening and closing of the valve), which is used to control various highly corrosive media. Fluorine-lined ball valve, first of all, "fluorine-lined" refers to "fluoroplastic, polytetrafluoroethylene" material. Fluorine-lined ball valve is an anti-corrosion ball valve with this material coated on the interface where the ball valve contacts the fluid.

2. Which of the lining materials of fluorine-lined ball valves, "PTFE" and "PFA", is better and more expensive?

Answer: PTFE and PFA are essentially fluoroplastics. "PTEF" is polytetrafluoroethylene, and "PFA" is a copolymer of tetrafluoroethylene and perfluoroalkoxy vinyl ether (good solubility). There is not much difference in performance, but the processing temperature and use temperature of PTFE are much higher than PFA. In terms of price, "PFA" will be more expensive.

3. What is the difference between a PTFE-lined ball valve and a fluorine-lined ball valve?

Answer: There is no difference between a PTFE ball valve and a fluorine-lined ball valve, but fluorine lining is a general term, and PTFE indicates which type of fluorine is used. It should be said that PTFE is a type of fluorine lining. But PTFE (F4) should be one of the better fluorines currently. The temperature resistance can reach 180 degrees. F46 is only 150 degrees.

4. What are the internal components of the fluorine-lined ball valve?

Valve core type: ball valve core

Valve core material: 2Cr13 lining F46

Flow characteristics: approximately equal percentage

Rated stroke: fully open 90°

5. How should the fluorine-lined ball valve be maintained during cleaning?

Answer: The disassembled individual parts can be cleaned by immersion. Metal parts with non-metallic parts that have not been disassembled can be scrubbed with a clean, fine silk cloth soaked in cleaning agent (to prevent fibers from falling off and adhering to the parts). When cleaning, all grease, dirt, glue accumulation, dust, etc. adhering to the wall must be removed.