| GENERAL CHARACTERISTICS ITEM DESCRIPTION | MAX OVERALL DIA 3.030 IN.; INNER AND OUTER SKIN OF INSULATING ENVELOPE STEEL,MIL-S-6721,TYPE 321 OR EQUIV; INSULATION MATL APPROX 0.190 IN. THK; BLANKET TO MEET REQUIREMENTS OF MIL-E-38453,PAR 3.2.4.2 FOR 700 DEG F SURFACE TEMP W/SURROUNDING AIRFLOW GREATER THAN 6FPS WHILE THE 226458 VALVE BODY SURFACE SKIN IS MAINTAINED AT 1190 DEG F |