CONSIST OF ONE 0.500 IN. PIPE INLET PORT FOR EACH OF TWO CONCENTRIC FLUID PASSAGES; THE CENTER PASSAGE DISCHARGES DIRECTLY INTO THE ROTATING SHAFT; THE OUTER PASSAGE DISCHARGES INTO THE ROTATING SHAFT OR THROUGH A 0.500 IN. PORT IN THE MOUNTING FLANGE; 3.562 INS BOLT CIRCLE DIA; 4 BOLT HOLES 0.406 IN. DIA; MAX SPEED 1500 PSI