Flange ball valve principle introduction

The ball of the ball valve is floating. Under the action of the medium pressure, the ball can generate a certain displacement and press on the sealing surface at the outlet end to ensure the sealing of the outlet end. The floating ball valve has a simple structure and good sealing performance, but the load of the ball subjected to the working medium is all transmitted to the outlet sealing ring, so it is necessary to consider whether the sealing ring material can withstand the working load of the spherical medium. This structure is widely used in medium and low pressure ball valves. According to the actuator, the ball valve can be called a pneumatic ball valve / electric ball valve. According to whether the valve body of the ball valve is detachable, it can be divided into one-piece, two-piece and three-piece ball valves. One-piece ball valve, compact and economical; two-piece and three-piece valves for easy maintenance and replacement of ball valves. According to the number of channels of the ball valve, it can be divided into two-way and three-way ball valves. The two-way ball valve is widely used. According to whether the inner and outer diameters of the channel are consistent, the full-diameter ball valve and the reduced-diameter ball valve can be divided. The inner diameter of the reduced diameter ball valve is smaller than the outer diameter, which reduces the medium flow, but is more resistant to pressure; the three-way ball valve is based on The shape of the inner sphere can be divided into L-shaped and T-shaped ball valves, and the L-shaped ball valve acts as a reversing action. The T-shaped ball valve can be used for commutation and mixing, and the application is also quite extensive.
The floating ball valve is suitable for various pipelines of Class150～Class1500, PN16～PN100, JIS 10K～JIS 20K. It is used to cut off or connect the medium in the pipeline. It is made of different materials and can be applied to water, steam and oil respectively. , nitric acid, acetic acid, oxidizing medium, urea and other media. This product can be widely used in the automation control system of paper, petrochemical, chemical, metallurgy, electric power, environmental protection, petroleum, light industry and other industrial sectors.
The floating ball valve has two configurations of full diameter and reduced diameter. Ball valves used to transport viscous, slagging media ducts shall be of full diameter for easy periodic wax sweeper passage. The diameter of the ball valve should be used on the pipeline for conveying gas or medium with physical properties similar to water. Because the weight is about 30% lighter than the full-diameter ball valve, it is beneficial to reduce the pipeline load and reduce the cost. The floating ball valve is driven by manual, worm gear, pneumatic, electric or hydraulic.