Document N2Z58nYm1eVkQmeqbknewDyLR

Johns-Manville Corporation Insulating Materials shall be enclosed in an extra jacket of S-oz.- canvas sewed over rosin sized paper. Where insulation is concealed the light canvas fur nished in manufacture is to be pasted down over the joints and the insulation additionally secured by means of brass lacquered bands applied at least two to a section. Johns-Manville Asbesto-Sfionge Felled Insulation High Pressure Steam Lines in Manufacturing Buildings--All high pressure steam piping and high pressure drip piping used in connection with distribution of steam for manufacturing purposes shall be insulated with Asbesto-Sponge Felted Sectional Insulation of the following thicknesses: Steam Pressure or Condition Tempera ture Deg. Fahr. Thickness of Insulation Pipes Pipes Pipes Larger 2 in. to Smaller than 4 in. 4 in. than 2 in. Oto 25 lb. 212 to 267 25 to 100 lb. 267 to 338 100 to 2001b. 338 to 388 r I'/z' 2' |* w w r r r Low Superheat 388 to 500 w 2" i'/i' Superheat - 500 to 600 3' i'/i 2* High Superheat 600 to 700 3'/l" y 2' Fittings, Valves and Flanges--All pipe fittings, valves-and flanges shall be insulated with block and plastic insulation to the same thickness as the adjacent pipe insulation. Block insulation shall be of the same material as the adjacent pipe insulation and plastic material used shall be hard finish Asbestos Cement. Block insulation may be omitted on pipe sizes smaller than 4 in., or where total thickness of insulation is less than 1H in. and the entire thickness of insulation in such cases may be made up of hard finish Asbestos Cement. Johns-Monville Asbestocel (/ flexible Roll Form) Warm Air Ducts--All warm air ducts, flues, heater casings and fan housings in the ventilating system shall be insulated with 4-ply Improved Asbestocel sheet insulation finished with hard finish Asbestos Cement H inch thick, applied over hexagonal wire reinforcement. The cement finish shall be troweled to a smooth and uniform surface. Where this insulation is exposed to view it shall be finished with a jacket of 8-oz. canvas, glued to the insulation and sewed in place. Painting--AH insulation exposed to view and en closed in a jacket of 8-oz. canvas is to be painted with one coat of glue sizing and two coats of first quality lead and oil paint of a color selected by the architect.. Underground Lines---All high and low pressure steam lines and hot water lines running under ground outside of buildings shall be installed in Johns-Manville System of Underground Insulation. This system shall be instaUed in accordance with the manufacturer's specifications. AH of the above insulation is to be furnished and applied by the manufacturer of the materials used, or by his approved- contractor, in accordance with the manufacturer's standard specifications. Johns-Manville is prepared to furnish detailed standard specifications on any of the above items, as well as on the following and many others: Johns-Manville Anti-Sweat Insulation Cold Water Piping--All cold service water piping, including risers and concealed fixture connections or exposed soil or waste lines, shall be insulated with Anti-Sweat Insulation 1 in. thick applied in two. layers with all joints broken, fittings with Hair Felt and hard finish Asbestos Cement to the same thickness. Finish of Insulation--AU insulation on pipes, fittings, valves and flanges which is exposed to view ( 532 Boilers, Boiler Settings, Tube Doors, Breechings and Smoke Flues, Stack Lining, Stack Insulation, Feed Water Heaters, Pump Cylinders, Hot Water Piping, Ice Water Piping, Refrigeration. Piping, Pipes Exposed to Freezing. Johns-Manville Corporation____________________ . Insulating Materials Siiace limitations do not [Krmit the insertion of complete efficiency tables, pipe sizes, insulation thickss. etc. If you do not find the size you want, write to the nearest Johns-Manville Division sales office. JOHNS-MANVILLE 85 PER CENT MAGNESIA INSULATION An efficient insulation for steam lines to 600 deg. fahr. ____________ ______________ EFFICIENCIES Pipe Size Inches 1 2 3 4 6 8 Rat Surface Nominal 1 c*^S^ature Difference Between Pipe and Surrounding Air, Deg. Fahr. Insulation _ 100 300 400 500 Thickness * em?S^ture * lPe* Deg. Fahr. (Temperature of Surrounding Air, 75 Deg.) Inches ,, J,75 BJ* 375* 475" 575* Heat losses per linear foot of bare pipe per hour and FArimriA nf in<iil*i!nn 0 Std. 2 0 Std. 0 Std. 0 Std. 2 3 0 Std. Bare Pipe Loss, B.t.u... Efficiency %................. %............... %............... Bare Pipe Loss. B.t.u... Efficiency %................ ` %................. %................ Bare Pipe Loss, B.t.u... Efficiency %................ ; %............... Bare Pipe Loss. B.t.u... Efficiency %................. " %............... %............. . Bare Pipe Loss. B.t.u... Efficiency %................. " Vo............... %............... 74.0 68.7 78.4 81.4 133.9 76.7 83.3 86.2 197.3 78.8 85.2 88.2 253.5 81.7 86.4 89.3 371.9 82.7 87.8 90.4 183.4 73.7 82.0 84.6 331.5 80.5 85.9 88.5 488.8 82.3 87.7 90.2 627.9 84.5 88.7 91.1 923.7 85.4 89.6 92.1 337.4 77.7 84.8 87.0 608.3 83.3 88.2 90.2 896.8 84.8 69.6 91.7 1152.1 86.9 90.5 92.4 1694.9 87.6 91.3 93.3 . . 555 2 81.1 87.3 89.1 1003 9 85.7 90.2 91.9 1480 0 87.1 91.4 93.0 1901 3 89.1 92.1 93.7 2797.1 89.7 92.8 94.4 89.5 90.9 88 2 91 7 93.3 89 3 92.9 94.2 90 8 93 4 94.8 4488 5 91 3 94.0 95.3 0 Bare Pipe Loss. B.t.u... 485.7 Std. Efficiency %................. 83.7 : s*.............. 68.4 91.1 1203.0 86.2 90.3 92.7 2207.3 88.4 91.8 93.7 3642 8 90.2 93.1 94.8 91 9 94.3 95.6 0 (Bare Surface) B.t.u.... 215.2 1 Efficiency %................ 82.36 -` %............... %............... 90.16 93.22 533.0 85.20 91.85 94.37 978.0 87.60 93.12. 95.25 . 1614.0 89.64 94.27 96.06 2590.0 91.48 95.31 96.75 JOHNS-MANVILLE ASBESTO-SPONGE FELTED INSULATION For insulating high pressure and superheated steam lines to 750 deg. fahr. ___________ ._________________ EFFICIENCIES pip. Size - Inches 1 2 3 4 6 Flat Surface Nominal Insulation Thickness Temperature Difference Between Pipe and Surrounding Air. Deg. Fahr 100" 200" 300" 400" 500? 1 Temperature of Pipe. Deg. Fahr. (Temperature of Surrounding Air, 75 Deg ) Inches u `i750 . 27r (1 ,375 475 575" Heat losses per linear foot of bare pipe per hour and Efficiencies of insularinn 0 Bare Pipe Loss, B.t.u... 74.0 1 Efficiency %................. 76.5 * %................. 80.7 %................ 83.5 0 . Bare Pipe-Loss, B.t.u... 133.9 V1 Efficiency %................. 80.4. . 2 . " %.................. 85.1 3 %.................. 87.7 0 Bare Pipe Loss, B.t.u.,. 197.3 1 Efficiency %................ 82.2 86.8 %................. ' 89.5 0 Bare Pipe Loss. B.t-u... 253.5 1 Efficiency %................ 83.3 2 3 : %................ 87.9 90.5 0 Bare Pipe Loss,- B.t.u... 371.9 1 Efficiency %................. 84.2 2 : %................ 89.1 91.5 0 Bare Pipe Loss. B.t.u... 485.7 Efficiency %................ 84.8 2 : %................. 89.6 Vo................. 92.1 0 (Bare Surface) B.t.u.... 215.2 1 Efficiency %................. 84.17 3 ` %................. %................ 91.32 94.02 183.4 79.9 83.6 86.1 331.5 83.3 87.2 89.6 488.8 84.9 88.8 91.2 627.9 85.8 89.7 92.0 923.7 86.5 90.7 92.9 1203.0 87.0 91.2 93.4 533.0 86.50 92.61 94.90 337.4 82.6 85.8 88.0 608.3 85.5 89.0 91.0 896.8 86.8 90.3 92.3 1152.1 87.6 91.1 93.0 1694.9 88.3 91.9 93.8 2207.3 88.7 92.4 94.2 978.0 88.38 93.61 95.59 . 555.2 85.2 87.8 89.8 1003 9 87.6 90.6 92.4 1480.0 88.8 91.7 93.5 1901 3 89.5 92.4 94.1 2797 1 90.1 93.1 94.8 3642.8 90.4 93.4 95.1 1614.0 90.10 94.55 96.23 87 4 90.0 91.5 89 3 92 1 93.7 90 3 93.2 94.6 90 9 93 7 95.1 91 4 94 3 95.6 5845 6 91 7 94.6 95.9 2590.0 91 73 95.44 96.85 533