PDF-W 0035-07 Bellows pumps KB series KB type KBA type KBR type Persuit of compact-size and cost-effectiveness The IWAKI bellows pump KB series (KB, KBA & KBR) is chemical feed pump which features the simplest structures and low cost. KBA and KBR, developed by pursuing compact-size and facilities which are used in the small flow range. Since all waste is eliminated and high reliability is ensured, KB series is suitable to various applications such as chemical feeding units, food processing machinery and analytical equipment in addition to quantitative chemical feeding to automatic photo developing machines.