AFMAN 24-204(I)/TM 38-250/NAVSUP PUB 505/MCO P4030.19H/ DLAI 4145.3 37 11 DECEMBER 2001 Figure A3.1.  Cylinder Specification and Service Pressures. Specification Marking Service Pressure Kilopascal (Pounds Per Square Inch)                DOT-3 12411.0 (1800)                DOT-3E 12411.0 (1800)                DOT-4 2068.5   (300)                DOT-8 1723.8   (250)                DOT-9 1379.0   (200)                DOT-25 2068.5   (300)                DOT-33 3309.6   (480)                DOT-38 1723.8   (250)                DOT-40 1379.0   (200)                DOT-41 1654.8   (240) Figure A3.2.  Wall-Stress Limitations. Type of Steel Wall   Stress Average Limitation Maximum Plain carbon steels over 0.35 carbon and medium manganese steels. 53,000 58,000 Steels   of   analysis   and  heat   treatment   specified   in   DOT Specification 3AA. 67,000 73,000 Plain carbon steels less than 0.35 carbon made before 1920. 45,000 48,000 Figure A3.3. Prescribed Filling Density for Liquefied Petroleum Gas. Minimum Specific Gravity of the Liquid Material at 60 degrees F (15.5 degrees C) Maximum Filling Density in Percent of the Water Capacity of the Container Minimum Specific Gravity of the Liquid Material at 60 degrees F (15.5 degrees C) Maximum Filling Density in Percent of the Water Capacity of the Container 0.271-0.289 26 0.504-0.510 42 0.290-0.306 27 0.511-0.519 43 0.307-0.322 28 0.520-0.527 44 0.323-0.338 29 0.528-0.536 45 0.339-0.354 30 0.537-0.544 46 0.355-0.371 31 0.545-0.552 47 0.372-0.398 32 0.553-0.560 48 0.399-0.425 33 0.561-0.568 49 0.426-0.440 34 0.569-0.576 50 0.441-0.452 35 0.577-0.584 51 0.453-0.462 36 0.585-0.592 52 0.463-0.472 37 0.593-0.600 53 0.473-0.480 38 0.601-0.608 54 0.481-0.488 39 0.609-0.617 55 0.489-0.495 40 0.618-0.626 56 0.496-0.503 41 0.627-0.634 57