Document Z3eXz93DD2Z2yBbM1X9aZ2G7

Ki p T Mr. 1. CnHd.ua - 7?w York t. . ;: f* m r t * *. *, r r* r * * a t;.~i ; .-.j; :r v.- :. June 6, 1944 siicir u.Yi?i CAisnrr? jilts 7-3&z?j.ras: ri?- ccrrsiBc . Aeeor&lag to "Asbestos" magazine or Mar, 1942, the production bf blgi temperature material in the future will be on the increase. 1 quote? " ' ' High pressure insulation. Keveir since the world began baa nan been so insulation minded. It ia not a mental state either, because hlr.her end still'higher working temperatures ecapel the limiting of engine'room air to lev-1 at whieh man can lire. So long as the tendency ia ever upwards, look for flaarmoua demand for both quantity and quality of heat confining insulation.* ' According to Asbestos" nmgszine of April,'1944,'last year's production of high tacperature insulation pipe coverings was 53,800 tons; with a total value of about 5,000,000. Until'row *H"speeiflenCiona of `high temperature pipe etrrerin^rn inaulation eellnd fcr-' a double layer bcmbinatibn insulation, using high temperature pipe coverings (Superex, HiTerp 12, Pnduro;';et e.) as the inner layer and low tenpeiuture pipe, coverings (BSi Magnesia and Asbestos felted pipe coverings) as outer layer. 65? Magnesia and Asbestos felted pipe coverings could not be uaed for e single leyer high teewerature insulation because they deecepoee when used over 600?. and 700y.v respectively."" Hi*3i temperature pipe coverings eould not be used as single layer be-' cause of high density (23-27 lbs. per cubic foot) and high K-fectora. Only for snail pipes of lj" and nailer single layer high temperature pipe coverings are used , and certainly don't represent a satisfactory insulation. / main reason that no single layer -high tenporatura pipe covering has been In use until now (with one '(Reception) is the fact thirt -there was no pmfosned single layer pipe, covering existing which would have met *tbe requirement# of a double layer insulation. Calsilite, the one formula high and Jew temperature prefoimed insulation material, "will Justify a ebange from double layer high temperature oombinetion to the single layer high temperature pipe covering.' - ' The disadvantages and advantages are as follows: risadvanteoes:........... ' ---------- . -l 1. Yhile using sinrle layer high temperature pipe coverings for pipes up to If", some manufacturers of double layer pipe eot_>rings may claim that In a single layer hl^ temperature pipe covering the*.heat would "escape" through the Joints and there fore an outer layer has to be used to cover or overlap the. Joints. The best loos through Joints on the surface of a'S" pipe eorerflig will not bs higher than about 1.25< of thvhe*t loss of the bare pipe; on a 10" pipe, not higher th .60*,.' This would be bB the Joint is considered as an open air space. However, the canvas Jacket, on the surface doses this air space so that ia fact the beet loss will not be greeter (continued on page 2) MIC H01042 01--0 2 0 1753 - ?epa 2 ~ J. s; r- - tka 1^ and 0.3?-, respectively. {This msnll amount of he.-<t loss, while not considered D-cligible, eould even be entirely eliminated by filling the Joints with a aenll amount of Cnlaillto eenent, brushed over the respective areas of the. pipe covering.) .................. . - . .... ........ ... . . . . 2. In manufacturing a single layer pipe covering, one will probebly need aene core beat to dry than for the ance nine of double layer pipe covering. * w ^ ,e* j *< j***s. j !'* * ti **;- r- * ,** *. ^ ^ .T l *.**- '*'*: *'*' V V*-. ^ * - ;*|e* ; f - 3.- "Objection may be raised that through the heat .of .the. open Joint-spaoe .the.part of tbe canvas Jacket covering this Joint would be affected. 1 don't knc\ if thin ever hap pen ed*.on single layer high, teeperature pipe covering used atpreaent for..lJ" pipes end er..e'> -ler.;-The cccblnation Super and Standard Uniabeatoa Pipe Covering for 751-1200r single 1l er construction {the only blab teeperature single layer construction on tbs pari'.at). rwcasmandi the following method of... amplication:v., ri .... ... .... .. * '' ! *4 f!". *. ! * Ij '?*' * *?' T * i " ' V.'i V'**' ' -- Tlth ecmbinetlon Super and Standard I'nisbeatoa tingle layer construction, provision for expansion -is reodily sada. ;Tbia particularly eppli-a.to tesroerctures of 600?. and over 'Snd'Pip* 6" and ler?ax...-/or the purpose, of .making this operative,..the pips covering ... is furnished slightly over si re than the lerpest C.D. of the pipe. This peralta tbe pipe-to.pore l&side .tbe covering, end.expand and contract without opening the Joints, - excant where provided. Caavsis -or aabeatoe doth fix!ah therefor can be spoiled and will not be,affected by the bent- - The auctions :re stapled together.- * Atlanta re : , r-ti [ ZJ7 e*c ici ^ S'i* *** r .:?* 1 `. I* * ** ** *Z * *V f. f*. t* PV (f 'j /, * ^ ^"* e *,<*>; T . * "* i--* ^ * *" *" 1. '`ternsidarable application coats .would be snvcd.vhen uslne single lay^lCalaillT*. Tberafors, applicators using .iialsillte would be able-to quote such lower prise.than those applicators using double layer high .temperature combination ijjaul&tion.. . The Job of .the applicator .would.be simpler beoauaa only half the number .of .half-noct Iona .has toiejis- cembled. j j; r. j ^.... .. .p ^ ~ ~r i ..._. Trobably. vaiy .little .breakage would occur Airing shipping and, handling because, in using pipe .oevarings .about twiae as.thick, it arill be. much, stronger. ... y 6 S. A one-layer pipe covering will alwave fit better around the pipe than a double l^yar oonbir.i tion- ^ ... ....,, , fclk,Tvj f.(,. ^ ... --, ' 4. ' Cue to ita outstanding lev' density, sing1b layer Caisilite.la also i,'sier to"..., handle. Tor example: Tor a 2" pipe with steam BOCM.OOO0?.," an inner layer of high temperature pipe covering of 2-1/6" wall thickneun and an outer* . . layer of 83s*. liappeala of 1^" wall tbiekneaa is recommended. --------------- i---------- . The_.weight of the inner layer J-a__ 16.90 Ibis.- w i ? .. T r._.putar.,. " .n. ",... . 12.B4 * .* ' - r:bight of .the 4Dubla.layer pipe .oorering'... 46.7 Iba,..-,. _ _ .. .. ,_Sinr'le layer. Calailita....f.. "... <15.14.lbs. i .. Th slrirlr lay-r Cejsilite of wall thickness weights only &v more than the inner leyer hint tetc?-fur- pipe covering of 2-1/5" well thickness by Itself. ( continued on par* 3 } MICH01044 : -0201752 pw 1 - 5. Because the highest prise discount of 'high temperature pipe coverings is only 50< against 60 on 8S=S ldsgnesia pipe coverings, better prices end higher profit could be obtained in selling this special type of "mono layer high ^es^eratpre CalaiUte". g, - In manufacturing there would be less hand!ing for Bolding* trim!Tig, peeking, eta., end would require late space in the dryer. The Bateriel lose in the trinaine will he Ter ueh reduced. \ . f. The largest else single layer Celcilite for a 10* pipe with 4* vail thickness would weigh not sore then apprordaately 40 lbs. This report is suteltted - 1. Because the outstanding 'superiority of Calaillta pips cowering se<ma to be especially in the high temperature fiald. 2. During wy experlaneea in inetallationa in aoxe than 20 oil refinery plants in Yurope, I here had hast results with single layer pipe corfiring construction. Those lastailatlone were under supervision of leading construction liras sueh as, Universal Oil Products (Chicago, Kew Work City), KOSee (Cleveland), Xellog (Baer Tork City), Teeter Bheeler (London, Dew York City), end Bahcok-Tileox (London, Kew York city). I feel thnt this entire question deaerrea consideration. PCllA PAUL CD7IG I . MICH01046 \ 01-0201753