Cock pneumatic valve and ball valve in the application of difference

when used for cutting, cock pneumatic valve pneumatic valve has a slightly better than the ball adjustment ability, but the advantage is limited, because the cock although pneumatic valve sealing surface is greater than the pneumatic ball valve, the sealing effect is good, but at the same time also bring the torque is too big, not flexible enough, the defects of conventional is cock structure because of the influence of the cock its weight, so it's hard to do a lot. If you want to use big size must adopt pneumatic valve plug structure, is the cock up side down, so inevitably under the effect of gravity, the sealing effect will be lower, had to adopt the way of on the seal, injection of grease caused this pneumatic valve can only be used for storage and transportation of natural gas, oil, and can not be used in other industries, because grease pollution medium. Although
and pneumatic ball valve sealing effect theory is a bit poor, but can make a large caliber, and following the development of the machining accuracy, seal materials, pneumatic ball valve sealing effect can well meet the requirements of practical application, and wider application range. When used to regulate, both were similar, also can make a proper holes on the body of revolution, is used to adjust. Therefore, generally requiring higher cock pneumatic valve used for sealing, but the average diameter smaller, while pneumatic ball valve can be applied to more and more widespread industrial occasions.