National boilers, radiators, and specialties: catalog no26 . i 45 36 27 10 30 100 80 65 50 40 30 11 33 110 88 nvb 55 44 33 12 36 120 96 78 60 48 36 13 39 130 104 84 3^ 65 52 39 14 42 140 112 91 70 56 42 15 45 150 120 97H 75 60 45 16 48 160 128 104 80 64 48 17 51 170 136 no M 85 68 51 18 54 180 144 117 90 72 54 19 57 190 152 123 n 95 76 57 20 60 200 160 130 100 80 60 21 63 210 168 136H 105 84 63 22 66 220 176 143 110 88 66 23 69 230 184 149 H 115 92 69 24 72 240 192 156 120 96 72 25- 75 250 200 162^ 125 100 75 26 78 260 208 169 130 104 78 27 81 270 216 175 h 135 108 81 28 84 280 224 182 140 112
National boilers, radiators, and specialties: catalog no26 . i 45 36 27 10 30 100 80 65 50 40 30 11 33 110 88 nvb 55 44 33 12 36 120 96 78 60 48 36 13 39 130 104 84 3^ 65 52 39 14 42 140 112 91 70 56 42 15 45 150 120 97H 75 60 45 16 48 160 128 104 80 64 48 17 51 170 136 no M 85 68 51 18 54 180 144 117 90 72 54 19 57 190 152 123 n 95 76 57 20 60 200 160 130 100 80 60 21 63 210 168 136H 105 84 63 22 66 220 176 143 110 88 66 23 69 230 184 149 H 115 92 69 24 72 240 192 156 120 96 72 25- 75 250 200 162^ 125 100 75 26 78 260 208 169 130 104 78 27 81 270 216 175 h 135 108 81 28 84 280 224 182 140 112 84 29 87 290 232 188J 2 145 116 87 30 90 300 240 195 150 120 90 31 93 310 248 201 H 155 124 93 32 1 96 320 256 208 160 128 * 96 tAdd y2 inch to length for each bushing. 41 NATIONAL PRE MO RADIATORS Five-Column Window-Water and Steam Type. Sizes—Five-Column Radiators National Premo Radiators, tapped 2 inches and bushed tosizes required. Width of radiator, 13 inches. Width of feet,13 inches. Assembled at the top with lj^-inch and at thebottom with 2-inch National Push Nipples of malleable cast-iron. Regular tappings, see page 43. tLength3 inches Heating Surface — Squ are Feet No, of 20-in. Height 16-in. Height 13-in. Height Sections per Section 5 sq. ft. sq. ft. 3 sq. ft. per Section per Section per Section 2 6 10 7H 6 3 9 15 UK 9 4 12 20 15 12 5 15 25 18 % 15 6 18 30 22 U 18 7 21 35 2614 21 8 24 40 30 24 9 27 45 33 M 27 10 30 50 37K 30 tAdd Yi inch to length for each bushing. 42 NATIONAL PREMO TAPPINGS Tappings For Premo Radiators SteamSupply One-Pipe Work Radiators Up to 24 square feet, inclusive 1 inch Above 24, up to 60 square feet 1 ^ inches Above 60, up to 100 square feet 1 y2 inches Above 100 square feet . 2 inches Supply andTwo-Pipe Work Return Up to 48 square feet, inclusive 1 x % inch Above 48, up to 9
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Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1920, booksubjectsteambo, bookyear1920
