While this product might sound like a simple distributor, the pipe distributor comes with many different sizes, shapes and purposes. There are straight-pipe, T-type, H-type, ring-type and ladder-type pipe distributors. While the straight pipe is generally used as a pre-distributor above a liquid distributor in a packed tower, the Y&G-pipe distributors are used to introduce vapor and liquid in trayed towers. The ring-type pipe distributor is most often applied in a reactor quench sections. The ladder pipe is primarily used in packed towers as the primary distributor for a packed tower.