For a long time, study the hydraulic characteristics of the valve is almost entirely determined by experiment. By the large number of tests are summarized charts and empirical formula obtained data is the main basis for designers. As the valve wide range of real-time internal structure of the same type will be a big difference V-ball manufacturers and product updates quickly. Thus, according to data on the test results of products made in the past to design new products, often with a large error. This is a key factor regulating valve new product development. V-pneumatic valve characteristics and uses a pneumatic piston actuator using compressed air as a power source V-ball vendors, driven by the movement of the piston crank 90 degrees rotation, to automatically open and close the valve. It's part of: adjusting screw actuator box, crank, cylinder block, cylinder shaft, piston, connecting rod, cardan shaft. 2, pneumatic control valve works: pneumatic valve actuators and regulation by agencies. Actuator is adjustable thrust components V-ball valve, which according to the size of the control signal to produce a corresponding pressure thrust, push adjusting mechanism action. Pneumatic control valve is a valve regulating member, it is in direct contact with the regulating medium, adjusting the flow rate of the fluid. V-ball valves offer _ Everbright (certified) _V type ball valve Everbright Limited provided by Shandong. Valve Co., Ltd. Shandong China Everbright (www.sdgdfm.com) Shandong Weifang, ball leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Everbright valve leadership with the staff warmly welcome all inquiries negotiations to create a better future for China Everbright valve.