Opening at a storage tank for gauging or sampling.
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 gauging nozzle Gauging nozzle The gauging nozzle is part of the sampling device. is part of the sampling device Sampling device A sampling device allows for sampling from every filling level of the stored medium in a tank. . Closable gauging openings are opened for gauging and sampling.