KYU filling units are recommended for corrosive chemicals and metal sensitive liquids such as acids, reagents, etc. The fill ranges are from 0.5ml to 1100ml and have a fill accuracy of +/- 0.5%. The pumps consist of a heavy wall, a precision bore glass cylinder with Kel-F or Kynar piston, and valve housings. “O” ring piston seals and Duck-Bill valving are standard with the KYU pump including the option of ceramic ball check valves. Non-metallic Duck-Bill valving provides near zero wear and are excellent for shear sensitive products.