At present, the fluorine-lined ball valve
has gradually become an indispensable valve in life. The reason why the fluorine-lined ball valve can be widely used in many industries is mainly because the fluorine-lined ball valve meets many conditions. Let's take a look at the lining Fluorine ball valve needs to meet the conditions. With the rapid development of the modern petrochemical industry, the development of fluorine-lined ball valves has been driven, and the rubber-lined and enamel valves that appeared in the early years can no longer meet the ever-changing industrial needs. People are constantly seeking economical and reasonable methods to solve these industrial needs, so lining valves of various materials have appeared, among which the fluorine-lined ball valve is a wonderful flower in the lining valve. In the past two decades of production and use, it has been continuously developed and has become one of the most widely used valve varieties in the modern petrochemical industry. Since the fluorine-lined ball valve has its own characteristics and requirements, it must meet the following technical requirements: ① The minimum wall thickness of the fluorine-lined ball valve shell is as specified in the GB/T12224 standard, and its pressure level is selected according to 1.6mpa and 2.5mpa, but This wall thickness does not include the thickness of the lining layer, and the thickness of the lining layer is recommended to use the dimensions in Table 2. It can also be determined according to user requirements. ②The structural length of the flanged fluorine-lined ball valve is in accordance with the regulations of gb/t12221, and the structural length can also be determined according to the user's requirements. ③The flange connection size of the fluorine-lined ball valve shall be in accordance with the regulations of gb/t9113.1 or the regulations of the industry standard. It can also be determined by the user in the order contract. But welding connection shall not be used. ④The channel size of the fluorine-lined ball valve can be according to the size recommended in Table 3, and can also be determined according to user requirements. The sweepable linearity of the valve can be satisfied according to user requirements. ⑤ The maximum force required to use the release torque or axial force on the handwheel or wrench of the fluorine-lined ball valve should not exceed 360n. The wrench should be no longer than twice the length of the valve structure. ⑥ If required by the buyer, the valve shall be provided with a locking mechanism. The locking mechanism shall be designed to lock the valve in the open or closed position. ⑦ Fluorine-lined ball valves equipped with manual or power actuation devices shall provide a visible position indicator to indicate the opening and closing positions of the closing member. For plug valves and ball valves, the wrench or position indicator should be in line with the pipe when the valve is in the open position, and should be placed horizontally on the pipe when the valve is in the closed position. ⑧ The operating device and stem extension assembly shall provide a means of preventing pressure build-up in the mechanism caused by leaking stem or bonnet seals. External connections should be sealed, such as with gaskets or o-rings, to prevent foreign matter from entering the mechanism. ⑨ The drive device of the fluorine-lined ball valve can be electric, hydraulic or pneumatic; the connection surface between the device and the valve cover or valve stem extension device should be designed to prevent the wrong or improper assembly of parts; the output of the transmission device should not exceed the valve The maximum load capacity of the drive chain.
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