Ball valve ball is floating, under the action of medium pressure, the ball can produce a certain displacement and tight pressure on the outlet sealing surface to ensure that the outlet is sealed. The structure of the floating ball valve is simple and the sealing is good, but the load of the ball bearing the working medium is all passed to the outlet sealing ring, so it is necessary to consider whether the sealing ring material can withstand the working load of the ball medium, and the ball may be offset when it is subjected to higher pressure impact.
Structural characteristics
Floating soft seal stainless steel ball valve for PN16~PN64 of various pipelines, used to cut off or connect the medium in the pipeline, choose not to use the material, can be applied to water, steam, oil, liquefied gas, natural gas, gas, acetic acid, oxidizing medium, urea and other media.
A. In a variety of valves, the flow resistance of the ball valve is the least, when the full-diameter ball valve is opened, the ball channel, the valve body channel and the connecting pipe diameter are equal and form a diameter, and the medium can flow almost without resistance.
b. The ball valve can be fully closed and fully opened by rotating 90°, and the opening and closing are rapid. Compared with gate valves and globe valves of the same specifications, ball valves are small in size, light in weight and easy to install pipelines.
Standards and specifications
Design standard :GB/T 12237
Structure length :GB/T 12237
Flange connection size :JB/T 79 HG/T 20592
Test and inspection :GB/T 13927
Pressure-temperature :GB/T 12224
