Self-reliance type pneumatic control valve operation

Self-reliance type pneumatic control valve rely on through the media in the valve itself as a digital pressure gauge, c energy drive valve work automatically, do not need the power converter and secondary instrument. The self-help type pneumatic regulator use valve the output feedback signal source ( Digital pressure gauge, differential pressure, c) By running organization driven disc signal source tube is passed to the change of valve opening, reach the purpose of regulating digital pressure gauge, flow, c. The pneumatic regulator is divided into direct functions and indirect functions type two kinds. Self-reliance type pneumatic control valve function directly self-reliance type pneumatic control valve, also known as the spring load type, the structure with elastic elements such as spring, bellows, bellows type of bulb and so on, and the elastic force feedback signal source balance principle. If it is a digital pressure gauge self-reliance type pneumatic control valve, the feedback signal source is the export of digital pressure gauge valve, introduced through signal source tube operation organization. If the traffic is self-reliance type pneumatic control valve, the valve outlet has an orifice ( Or other resistance devices) Introduced by orifice plate ends out differential pressure signal source operation organization. If it is Celsius self-reliance type pneumatic control valve, valve exports have c sensors ( Temperature or package) By degrees Celsius sensor in medium heat bilges cold shrink drive running organization.