Our company's product quality is stable and reliable, and it enjoys a high reputation among the vast number of users with its unique performance. We continue to introduce and digest, and the electric control valve manufacturer has developed special control valves on its own, which have reached the international advanced level in the application of complete automation technology. Our most common products are Electric Control Valve, Pneumatic Control Valve, Pneumatic Butterfly Valve and Self-operated Pressure Control Valve, etc. Self-operated control valves are usually used in those occasions that require fast response and continuous control, such as steam systems, fuel oil systems, water treatment systems, etc. Their advantages are simple structure and easy maintenance, and their disadvantages are that the adjustment accuracy may be greatly affected by the fluctuation of medium pressure, and may not work properly under extreme conditions. If you have specific questions about ZZYP Se…