Can the internal gas path of pneumatic control valve be changed to external gas path?

Yes According to the personal library, the internal gas path of pneumatic control valve can be changed to external gas path, which needs to be operated according to the specific valve and system design. Pneumatic control valve usually consists of valve body, valve seat, disc, valve stem and internal gas path. The internal gas path is the internal gas path of pneumatic components, which is used to control the opening and closing or adjustment of valves. The external air path connects the air source, control air and working environment.