-NONE- — LAPPING TOOL JIG, VALVE SEAT: IAW NAVAL SHIP SYSTEMS COMMAND DRAWING 803-2177525, REVISION H, DATED 24 AUG 83. FOR 1-1/2 INCH VALVE SZ PIECE NUMBER 53. APPLICABLE INFORMATION ON SHEETS 2, 3, AND 16. EXCEPTION TO DRAWING: COATING: USE CHROME NICKEL OR | Celestix | Celestix AI