As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NEW FUEL TANK DRAIN VALVES START DRIPPING APPROXIMATELY TWO AND THREE DAYS AFTER INSTALLATION. NO DEBRIS OR PARTICLES DRAIN FROM FUEL TANK. HOLDING VALVE UNSEATED. O-RINGS LOOKED GOOD. EACH PART HAD 8130-3 FORM ATTACHED. ALL MANUFACTURED 1993 OR LATER. SUBMITTER STATES HAVE REPLACED ABOUT SIX VALVES IN 18 MONTHS.