Pipeline dryers are designed to decrease the water vapour content in compressed air or process gas pipelines to ensure safety. The air dryers are suitable for pipelines with small diameters of up to 10mm or 3/8″ with operating pressures of up to 7 bar. The pipeline dryers are filled with silica gel or molecular sieve desiccant to control humidity levels. Various grades of molecular sieves desiccants are available to adsorb other components selectively.