In the paper and printing industry, air-operated diaphragm pumps are primarily used to transport glues and printing inks. In many cases, a glue application pump of average size and made of PE from the E-SERIES is used. In the case of printing inks, Almatec pumps with a draining system offer numerous advantages. The colors must not be allowed to mix during a color change. The draining system allows the pump and pipeline to be emptied without disassembly. The color flows back into the supply container (saving money), and the amount of cleaning agent and solvent required is significantly reduced, thereby reducing the impact on the environment.