Modulating ball valve of Zhejiang Jimai Auto-Tech Co,. Ltd is designed as a smart device to achieve the proportional control. The working principle of modulating ball valve is using a ball with a hole drilled through it to control the flow of media. It can reach to the desired and right position when input the 4~20mA current signal or 0~10V power supply. Modulating ball valves are well-known around the world for their light weight, steady operation, and precision control. Our company manufactures the ball valves on the international standard, which are available in ANSI,JIS,DIN,etc standard. Customers could ask for customized requirements, we will try the best to meet your satisfactions.