Blue White 1 2" & 1 4" MPT x 3 8" OD Injection Fitting [6 PSI] (C 395N 6A) hammerhead The Aquasol poly chemical drum The Aquasol poly chemical drum is designed for compatible chemical feed and water treatment applications where a storage container is needed Impellers at this level are especially useful because larger output pumps depend on the exact internal geometry and fit of the impeller to deliver the performance expected from the assembly 6 PSI rating The Blue White injection fitting is designed for compatible chemical feed applications where solution needs to be introduced into the line through a controlled connection point