Pressure gas tank wagon, type Zags, of the Spanish State Railways.

■ Version with long sun protection roof
■ Sophisticated design with authentic "Transfesa" lettering

Pressurized gas tank wagons are special vehicles for liquefied, refrigerated or dissolved gases. The loading and unloading takes place via devices that can be operated from the ground (bottom discharge). The eye-catching, about 30 cm high, orange longitudinal stripes in the center of the tank is characteristic for the European wagons.

For a long time, these wagons operated exclusively as private wagons [P] and were hired by national railway authorities. In the meantime, in contrast to other types of wagons, they are owned by specialized wagon hire companies. The complex wagon fleet management includes maintenance, inspection and more.