Blue-White Industries, of Huntington Beach, Calif., has modified both the A-014HD and C-395HD injection fittings, which are shipped with the company’s standard CHEM-FEED and FLEXFLO metering injectors. The fittings now have 25 percent increased wall thickness at the o-ring groove area, which improves the overall strength of the part. Polypropylene units are now reinforced with 10 percent glass fiber. Wrench flats have been added to the 1/4?? through 1/2?? MPT fittings to facilitate installation.