Transcript three-way ball valve is can T T, and L tee, the pipeline is the main cut off or shunt effect, some of them have a variety of specifications of the three-way ball valve application and switch is not the same, can be points of large diameter, small diameter, also have the very big difference, in applications such as in chemical system pipeline, in the power plant power generation system, and so on in industrial piping system. In the first part of a chemical system often see the tee ball Industrial Valves in the field of chemical industry are more strict requirements, with anti-corrosion, rust prevention as one of the main choice, want to anti-corrosion must first choice from material, the small diameter of the three-way ball valve generally select 316 l material, in the case of a 316 l material because of its cost is not high, to cater to the market requirement, if the large diameter tees ball valve is different, the user will generally choose lining four fluorine, body mainly USES the carbon steel materials, internally USES the high temperature melting, four fluorine through precision equipment is compressed, the four fluorine lining in the body, but in the aspect of life is not as good as the overall 316 l material three-way ball valve, after four fluorine in multiple switch will appear, lead to tee ball valve switch is lax, serious and even leakage occurs, the four fluorine torn away, some large chemical plant, state-owned units will be the overall 316 l material directly, than steel lining on the service life of the big four fluorine three-way ball valve to a good many, also saves a lot of unnecessary maintenance. The second part of power system in electricity generation often encounter some specifications larger three-way ball valve, and pressure is very high, generally at the same time in the production of production in American standard design way, such as high pressure tee ball valve in accordance with the gb standard, will find a lot of problems, including the pressure test to pass, when the seal is no guarantee that, cause leakage problem severity. With domestic 16 mpa valve, relative to American standard 1500 lb, in design, American standard tee ball valves in the valve body wall thickness thicker than mark 3. 55 mm, with a three-way ball valve American standard 300 diameter, pressure tee ball valve on the weight of 160 kg category is far than the national standard to weigh more than 200 kilograms, the 3-way ball valve enjoys more than just weight gap, the ball's heart is also very different, generally the standard design of three-way ball valve in the flow channel size belongs to full size, and national standard basically by reducing the Lord, on the traffic has been completely lost a large margin, the operating torque on the target than the target torque to less than 1. 4 times, sealing structure is also far behind, this is a defect in design standards, which needs to be improved. Third part industry system in the system the 3-way ball valve mainly machinery, equipment, automated production lines, in this respect to conventional caliber and pressure, the current domestic technology can give self-marketing, don't need to rely on foreign standards as well as foreign brands, the 3-way ball Industrial Valves has been relatively stable in the industrial market, as long as according to the standard, it is difficult to leak and some other related problems.
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