National boilers, radiators, and specialties: catalog no26 . ght Height No. of 2 J4 in. 3 sq. ft. 2H 2 sq. ft. 1% Sec. 1^ Sections per Sec. per Sec. per Sec. per Sec. per Sec. 2 5 6 5 4 3H 3 3 7H 9 7H 6 5 *H 4 10 12 10 8 6% 6 5 im 15 123^ 10 8M 7J4 6 15 18 15 12 10 9 7 17 H 21 17^ 14 HH 10 M 8 20 24 20 16 13H 12 9 22 M 27 22 y2 IS 15 13^ 10 25 30 25 20 16 % 15 11 27 H 33 27 y2 22 18 H 16H 12 30 36 30 24 20 18 13 32 y2 39 32 H 26 »H 19 H 14 35 42 35 28 23 M 21 15 37H 45 37 J^ 30 25 22 y2 16 40 48 40 32 26 % 24 17 42 y2 51 42 y2 34 28 ys 25 H 18 45 54 45 36 30 27 19 47^ 5
National boilers, radiators, and specialties: catalog no26 . ght Height No. of 2 J4 in. 3 sq. ft. 2H 2 sq. ft. 1% Sec. 1^ Sections per Sec. per Sec. per Sec. per Sec. per Sec. 2 5 6 5 4 3H 3 3 7H 9 7H 6 5 *H 4 10 12 10 8 6% 6 5 im 15 123^ 10 8M 7J4 6 15 18 15 12 10 9 7 17 H 21 17^ 14 HH 10 M 8 20 24 20 16 13H 12 9 22 M 27 22 y2 IS 15 13^ 10 25 30 25 20 16 % 15 11 27 H 33 27 y2 22 18 H 16H 12 30 36 30 24 20 18 13 32 y2 39 32 H 26 »H 19 H 14 35 42 35 28 23 M 21 15 37H 45 37 J^ 30 25 22 y2 16 40 48 40 32 26 % 24 17 42 y2 51 42 y2 34 28 ys 25 H 18 45 54 45 36 30 27 19 47^ 57 47 y2 38 31% 28 y2 20 50 60 50 40 33 y3 30 21 52 H 63 52 H 42 35 31 y2 22 55 66 55 44 36% 33 23 57 H 69 57 y2 46 38 H 34 y2 24 60 72 60 48 40 36 25 62 K 75 62 y2 50 41% 37 H 26 65 78 65 52 43 H 39 27 67 H 81 67J/2 54 45 40 H 28 70 84 70 56 46 % 42 29 72 y2 87 72 H 58 48 y3 43 y2 30 75 90 75 60 50 45 31 77 H 93 TTH 62 51 H 46 y2 32 80 96 80 64 53 H 48 fAdd H inch to length for each bushing. 35 NATIONAL PREMO RADIATORS Two-Column Hot-Water and Steam Types. National Premo Radiators tapped 2 inches and bushed tosizes required. Width of radiator, 7% inches. Width of feet,76A inches. Assembled with 2-inch National Push Nipples ofmalleable cast-iron. Hospital radiator also regular tappings, see page 43. 36 NATIONAL PREMO RADIATORS Sizes—Two-Column Radiators t Square Feet - — Heating Surface 45-in. 38-in. 32-in. 26-in. 23-in, 20-in. No. of 2% in. Height Height Height Height Height Height Sec- per Sec. 5 sq. ft. 4 sq. ft. 3% sq. ft. 2% 2% sq. ft. 2 sq. ft. tions Length per Sec. per Sec. per 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
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectsteambo, bookyear1920
