Series FDG, FDS, FDE (Flanged with light fittings)
VETROLUX sightflow indicator, series FB-VA, type FB-VA 100
CHEMLUX sightglass light fitting type FKEL 5dHW, Ex d IIC T6, Ex tD A21 IP65 T80°C, Ex II 2 G + D, 5 W, 230 V, on VETROLUX pipeline flow indicator, series FDE
VETROLUX sightflow indicator, series S-VA, type S-VA 80