In pilot-operated valves, for example, the inflow pipe is used to transfer the tank pressure to the pilot valve so that the pilot valve is opened.
Flame arrester Device fitted to the opening of an enclosure, or to the connecting pipe work of a system of enclosures, and whose intended function is to allow flow but prevent the transmission of a flame. The pilot valve Pilot valve The pilot valve is an assembly of a pilot operated valve, which is mounted on the main valve and is used to control the main valve. is then vented via the outlet pipe.
