National boilers, radiators, and specialties: catalog no26 . Sec. per Sec. per Sec. per Sec. 2 5 10 8 6% 5% 4% 4 3 7H 15 12 10 8 7 6 4 10 20 16 13 % 10 H 9% 8 5 12 y2 25 20 MM 13% 11% 10 6 15 30 24 20 16 14 12 7 17% 35 28 23 % 18 H 16% 14 8 20 40 32 26 % 21H 18% 16 9 22 % 45 36 30 24 21 18 10 25 50 40 33 H 26 % 23% 20 11 27 H 55 44 36 % 29 % 25% 22 12 30 60 48 40 32 28 24 13 32 H 65 52 43 H 34% 30% 26 14 35 70 56 48 % 37% 32% 28 15 37 M 75 60 50 40 35 30 1G 40 SO 64 53% 42% 37% 32 17 42% 85 68 56 3 45% 39% 34 18 45 90 72 60 48 42 36 19 47% 95 76 63 H 50% 44% 38 M 20 50 100 80 66 % 53% 46% 40 2
National boilers, radiators, and specialties: catalog no26 . Sec. per Sec. per Sec. per Sec. 2 5 10 8 6% 5% 4% 4 3 7H 15 12 10 8 7 6 4 10 20 16 13 % 10 H 9% 8 5 12 y2 25 20 MM 13% 11% 10 6 15 30 24 20 16 14 12 7 17% 35 28 23 % 18 H 16% 14 8 20 40 32 26 % 21H 18% 16 9 22 % 45 36 30 24 21 18 10 25 50 40 33 H 26 % 23% 20 11 27 H 55 44 36 % 29 % 25% 22 12 30 60 48 40 32 28 24 13 32 H 65 52 43 H 34% 30% 26 14 35 70 56 48 % 37% 32% 28 15 37 M 75 60 50 40 35 30 1G 40 SO 64 53% 42% 37% 32 17 42% 85 68 56 3 45% 39% 34 18 45 90 72 60 48 42 36 19 47% 95 76 63 H 50% 44% 38 M 20 50 100 80 66 % 53% 46% 40 21 52 H 105 84 70 56 49 42 22 55 110 88 73 % 58% 51% 44 23 57 % 115 92 76% . 61% 53% 46 24 60 120 96 80 64 56 48 25 62 H 125 100 83 % 66% 58% 50 26 65 130 104 86% 69% 60% 52 27 67 H 135 108 90 72 63 54 28 70 140 112 93 % 74% 65% 56 29 72% 145 116 96 % 77% 67% 5S 30 75 150 120 100 80 70 60 31 77% 155 124 103 Va 82% 72% 62 32 80 160 128 106 % 85% 74% 64 fAdd % inch to length for each bushing. 37 NATIONAL PRE MO RADIATORS Three-Column Hot-Water and Steam Types. National Premo Radiators tapped 2 inches and bushed tosizes required. Width of radiator, 93^ inches. Width of feet,9% inches. Assembled with 2-inch National Push Nipples ofmalleable cast-iron. Hospital radiator also regular tappings, see page 43. 38 NATIONAL PREMO RADIATORS MZi >S—1 nree- uoluir in Kac liatoi s t Square Feet — Heating Surface 45-in. 38-in. 32-in. 26-in. 22-in. 38-in No. of Length Height Height Height Height Height Height Sec- 2 Mm. 6 sq. ft. 5 sq. ft. 4M sq. ft. 3% sq. ft. 3 sq. ft. 2H sq. ft. tions per Sec. per Sec. per Sec. per Sec. per Sec. per Sec. per Sec. 234 5 121824 101520 9 11* 7y2 11H15 6 9 12 4y2 5 12 H 30 25 22 y2 18^ 15 11H 6 15 36 30 27 22 y2 18 13^15M 7 17,H 42 35 31 y2 26K 21 8 20 48 40 36 30 24 18 9 22 H 54 45 40J/2 33^ 27 20^ 22 y2 24 X27 10 25 60 50 45 37 y2 30 11 12 27 y2 30 66 72 5560 49 X54 41M45 3336 13 32 J4 78 65 58 y2 48 H 39 29 H 14 1516 35 37 y2 40 849096 7075 80 63 67 y2 7
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectsteambo, bookyear1920
