Double core (upper and lower) design with multi-springs actuator results in the advantages such as compact structure, light weight, flexible action, small pressure loss, large capacity, accurate flow characteristics, and easy maintenance.

F43C confluent type and F43D distributary type are available to achieve the media mixed-heating or cooling, and, inequal distributary, according to different requirements.

Applied in the temperature control system of the thermal converter in petroleum industries, and the automatic control systems served in other industries

Optional: ordinary model, superior model and other models